Add a new vendor attribute QCA_WLAN_VENDOR_ATTR_DISCONNECT_IES
to configure disconnect IEs to the driver. Driver shall fill
these IEs in disassoc/deauth frame.
These IEs are expected to be considered only for the next
immediate disconnection (disassoc/deauth frame) originated by
the DUT, irrespective of the entity (user space/driver/firmware)
triggering the disconnection.
The host drivers are not expected to use the IEs set through
this interface for further disconnections after the first immediate
disconnection initiated post the configuration.
If the IEs are also updated through cfg80211 interface (after the
enhancement to cfg80211_disconnect), host driver is expected to
take the union of IEs from both of these interfaces and send in
further disassoc/deauth frames.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
Add a QCA vendor sub command QCA_NL80211_VENDOR_SUBCMD_OEM_DATA
with attributes qca_wlan_vendor_attr_oem_data_params to support
OEM data. It is used to send OEM data binary blobs from
application/service to firmware. The attributes defined in enum
qca_wlan_vendor_attr_oem_data_params are used to deliver the
parameters.
Signed-off-by: Paul Zhang <paulz@codeaurora.org>
The new certificate chain debug dumps used functions that are not
available with LibreSSL or BoringSSL.
Fixes: 857edf4bf4 ("OpenSSL: More debug prints of configured ciphers and certificates")
Signed-off-by: Jouni Malinen <j@w1.fi>
The OPENSSL_VERSION_NUMBER ifdef block left out the local variable that
is needed with all versions. In addition, SSL_set_security_level() is
not available with LibreSSL or BoringSSL.
Fixes: 3ec65a8e38 ("OpenSSL: Allow anon-DH cipher suites to be added for TEAP")
Signed-off-by: Jouni Malinen <j@w1.fi>
The tls_connection_get_cipher_suite() implementation used
SSL_CIPHER_get_protocol_id which was added in OpenSSL 1.1.1. Need to use
compatibility code with older versions.
Fixes: 94714ec341 ("OpenSSL: Add tls_connection_get_cipher_suite()")
Signed-off-by: Jouni Malinen <j@w1.fi>
This adds an encrypted version of a one octet application data payload
to the end of the handshake when TLS v1.3 is used to indicate explicit
termination of the handshake (either after Finished message or after the
optional NewSessionTicket message). The current
draft-ietf-emu-eap-tls13-05 defines this to be a zero length payload,
but since that is not allowed by OpenSSL, use a one octet payload
instead for now with hopes of getting the draft specification updated
instead of having to modify OpenSSL for this.
Signed-off-by: Jouni Malinen <j@w1.fi>
EAP-TLS with TLS 1.3 uses an empty application data record from the
server to indicate end of the exchange, so EAP-TLS peer will need to
check for this special case and finish the exchange with an empty
EAP-TLS (ACK) so that the server can send out EAP-Success.
Signed-off-by: Jouni Malinen <j@w1.fi>
This will hopefully not be needed for EAP-TLS use cases since there
should not really be a middlebox that looks at the TLS layer details in
case of EAP authentication.
Signed-off-by: Jouni Malinen <j@w1.fi>
hostapd EAP server can now be configured with two separate server
certificates/keys to enable parallel operations using both RSA and ECC
public keys. The server will pick which one to use based on the client
preferences for the cipher suite (in the TLS ClientHello message). It
should be noted that number of deployed EAP peer implementations do not
filter out the cipher suite list based on their local configuration and
as such, configuration of alternative types of certificates on the
server may result in interoperability issues.
Signed-off-by: Jouni Malinen <j@w1.fi>
This adds support for a new EAP method: EAP-TEAP (Tunnel Extensible
Authentication Protocol). This should be considered experimental since
RFC 7170 has number of conflicting statements and missing details to
allow unambiguous interpretation. As such, there may be interoperability
issues with other implementations and this version should not be
deployed for production purposes until those unclear areas are resolved.
This does not yet support use of NewSessionTicket message to deliver a
new PAC (either in the server or peer implementation). In other words,
only the in-tunnel distribution of PAC-Opaque is supported for now. Use
of the NewSessionTicket mechanism would require TLS library support to
allow arbitrary data to be specified as the contents of the message.
Signed-off-by: Jouni Malinen <j@w1.fi>
Add a new TLS_CONN_* flag to provide a higher level mechanism for adding
(instead of fully replacing) allowed list of TLS ciphersuites for TEAP
provisioning purposes.
Signed-off-by: Jouni Malinen <j@w1.fi>
This implements "tls-unique" derivation per RFC 5929, Section 3. This
will be needed for channel binding, e.g., with EAP-TEAP.
Signed-off-by: Jouni Malinen <j@w1.fi>
The buf[] array is initialized to zeros, so it was already null
terminated since the read() call did not allow the last character of the
buffer to be overwritten. Since that was apparently not enough to make
some static analyzers understand the design, use explicit null
termination after a successful read() call.
Signed-off-by: Jouni Malinen <j@w1.fi>
This reduces differences in timing and memory access within the
hunting-and-pecking loop for ECC groups that have a prime that is not
close to a power of two (e.g., Brainpool curves).
Signed-off-by: Jouni Malinen <j@w1.fi>
This reduces differences in timing and memory access within the
hunting-and-pecking loop for ECC groups that have a prime that is not
close to a power of two (e.g., Brainpool curves).
Signed-off-by: Jouni Malinen <j@w1.fi>
'sizeof' was not used with os_memmove() for an integer array. This lead
to an issue with part of the preferred channel list not being used.
Fixes: 79329ae0aa ("P2P: Verify local driver preferred frequencies for P2P use cases")
Signed-off-by: Daichi Ueura <daichi.ueura@sony.com>
Mesh points can partially support HE features (when requiring no
controlling STA/AP) as long as hardware supports it. The kernel just
requires support for HE mesh and wpa_supplicant can forward the peer
capabilities to the kernel for further processing.
Signed-off-by: Sven Eckelmann <seckelmann@datto.com>
The HE capabilities are no longer per PHY but per iftype on this
specific PHY. It is therefore no longer enough to just parse the AP
capabilities.
The he_capabilities are now duplicated to store all information for
IEEE80211_MODE_* which hostap cares about. The nl80211 driver fills in
this information when the iftype supports HE. The rest of the code still
only uses the IEEE80211_HE_AP portion but can be extended later to also
use other HE capabilities.
Signed-off-by: Sven Eckelmann <seckelmann@datto.com>
Declare the variable only once and reuse it instead of openning
unneeded scopes.
Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
The the mask for PPE threshold present in the HE phy capability byte 6 is
0x80 and not 0x6. This incorrect mask breaks the length calculation and as
result the acceptance of the HE capabilities for STAs which either:
* don't have the PPE threshold present bit set AND the Codebook Size={7,5}
MU Feedback or the Triggered SU Beamforming feedback bit set
* do have the PPE threshold present set AND neither the Codebook Size={7,5}
MU Feedback nor the Triggered SU Beamforming feedback bit set
Fixes: 8f5fc369e2 ("HE: Fix HE Capabilities element variable length encoding")
Signed-off-by: Sven Eckelmann <seckelmann@datto.com>
Some compilers have started to warn about this and the use of two loops
with ix 0..pa-1 and 0..pa loop a bit suspicious, so better make sure the
array is initialized with zeros before extracting the terms from it.
Signed-off-by: Jouni Malinen <j@w1.fi>
This does not need to be specific to X.509, so move the BOOLEAN DER
encoding validation into asn1_get_next() to make it apply for all cases
instead of having to have the caller handle this separately.
Signed-off-by: Jouni Malinen <j@w1.fi>
While BER encoding allows any nonzero value to be used for TRUE, DER is
explicitly allowing only the value 0xff. Enforce this constraint in
X.509 parsing to be more strict with what is acceptable.
Signed-off-by: Jouni Malinen <j@w1.fi>
Handling of the optional pathLenConstraint after cA was not done
properly. The position after cA needs to be compared to the end of the
SEQUENCE, not the end of the available buffer, to determine whether the
optional pathLenConstraint is present. In addition, when parsing
pathLenConstraint, the length of the remaining buffer was calculated
incorrectly by not subtracting the length of the header fields needed
for cA. This could result in reading couple of octets beyond the end of
the buffer before rejecting the ASN.1 data as invalid.
Credit to OSS-Fuzz: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=15408
Signed-off-by: Jouni Malinen <j@w1.fi>
This adds a CTRL-EVENT-EAP-PEER-CERT even for depth=0 even if a depth >
0 certificate results in peer certificate validation error. Previously,
this case resulted in the upper layers not getting any information about
the used peer certificate. Now that information is available, e.g., to
allow server certificate -based overriding of the trust to be done.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
The same len variable can be used for both needs within
ieee802_1x_get_keys() to avoid compiler warning about use of shadowed
variable.
Fixes: 0ee6885dae ("macsec: Store EAP-Key-Name as eapSessionId")
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
This implements the required functionality in hostapd to facilitate OWE
connection with the AP SME-in-driver cases. Stations can either send DH
IE or PMKID (in RSNE) (or both) in Association Request frame during the
OWE handshake. The drivers that use this offload mechanism do not
interpret this information and instead, pass the same to hostapd for
further processing. hostapd will either validate the PMKID obtained from
the STA or generate DH IE and further indicate the same to the driver.
The driver further sends this information in the Association Response
frame.
Signed-off-by: Srinivas Dasari <dasaris@codeaurora.org>
Signed-off-by: Liangwei Dong <liangwei@codeaurora.org>
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
This command/event interface can be used by SME based host drivers that
rely on user space (hostapd/wpa_supplicant) for DH IE
processing/generation. This interface facilitates the OWE connection
with host drivers by offloading DH IE processing to the user space
(hostapd/wpa_supplicant).
Signed-off-by: Srinivas Dasari <dasaris@codeaurora.org>
Signed-off-by: Liangwei Dong <liangwei@codeaurora.org>
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
This is needed to allow upper layer software to learn the hash of the
server certificate for allowing user to override trust root
configuration.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
Add tod=1 to CTRL-EVENT-EAP-PEER-CERT events if the peer certificate
includes the TOD policy in the X.509v3 Certificate Policies extension.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
This makes it easier to add new information to the callbacks without
having to modify each callback function type in EAPOL and EAP code every
time.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
sscanf() can apparently read beyond the end of the buffer even if the
maximum length of the integer is specified in the format string. Replace
this parsing mechanism with helper functions that use sscanf() with NUL
terminated string to avoid this.
Credit to OSS-Fuzz: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=15158
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
src/*/Makefile needs to allow additional CFLAGS values to be provided
from the calling Makefiles so that the clang command line arguments to
enable sanitizers consistently. In addition, it can be useful to be able
to provide CC, CFLAGS, and LDFLAGS from external setup while still
requesing LIBFUZZER=y build. Allow that by not overriding these
variables if they are already set.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
The driver automatically starts beacon reporting if it pauses the beacon
reporting for any reason other than disconnection. In specific cases,
userspace may not want the beacon reporting to be automatically resumed
after a pause. Add interface support for userspace to specify driver not
to start beacon reporting automatically after a pause.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
If the EAP Session-ID is available, add it into Access-Accept
(EAP-Key-Name attribute). This is needed for MACsec.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
It is safer to maintain the old EAPOL version (2) in EAPOL frames that
are not related to MACsec and only update the version to 3 for the
MACsec specific cases.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
Add the following vendor attributes under the enum
qca_wlan_vendor_attr_spectral_scan to support the configuration of
Spectral DMA debug.
1. QCA_WLAN_VENDOR_ATTR_SPECTRAL_SCAN_CONFIG_DMA_RING_DEBUG
Enable/disable debug of the Spectral DMA ring
2. QCA_WLAN_VENDOR_ATTR_SPECTRAL_SCAN_CONFIG_DMA_BUFFER_DEBUG
Enable/disable debug of the Spectral DMA buffers
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
SIM-based EAP authentication with IMSI encryption requires a special EAP
Identity response: anonymous@realm. Then the server sends AKA-Identity
request which is answered with the encrypted IMSI. Add logic that
indicates if the special anonymous identity is used. Otherwise, this
field is used for storing the pseudonym.
Test: Connect to Carrier Wi-Fi, verify correct behavior from captures
Test: Connect to non IMSI encrypted EAP-AKA AP, verify pseudonym usage
Signed-off-by: Hai Shalom <haishalom@google.com>
External auth status to the driver includes the PMKID derived as part of
SAE authentication, but this is not valid if PMKSA caching is disabled.
Drivers might not be expecting PMKID when it is not valid. Do not send
the PMKID to the driver in such cases.
Signed-off-by: Srinivas Dasari <dasaris@codeaurora.org>
A driver that uses internal AP SME may need to be able to use the
external_auth status operation in station mode, so do not skip this
solely based on drv->device_ap_sme; instead, use that condition only
when operating in AP mode.
Fix external_auth status in non SME case.
Signed-off-by: Ashok Kumar <aponnaia@codeaurora.org>
With radio work design, send Action frame request will be queued and
wait for p2p-scan to finish, so there is no need to delay send_action.
This change revisits the logic (added before the radio work framework)
in below commits:
3f9285f P2P: Delay send_action call if p2p_scan is in progress
f44ae20 P2P: Drop pending TX frame on new p2p_connect
9d562b7 P2P: Add p2p_unauthorize command
63a965c P2P: Fix after_scan_tx processing during ongoing operations
9a58e52 P2PS: Callback to create pending group after sending PD Response
3433721 P2P: Continue p2p_find after sending non-success Invitation Response
Signed-off-by: Hu Wang <huw@codeaurora.org>
In case the current channel has regulatory WMM limitations, take them
into account when filling the WMM element. Also check if the new WMM
element is different from the previous one and if so change the
parameter_set_count to imply stations to look into it.
Signed-off-by: Haim Dreyfuss <haim.dreyfuss@intel.com>
ETSI EN 301 893 v2.1.1 (2017-05) standard defines a new channel access
mechanism that all devices (WLAN and LAA) need to comply with.
In previous versions the device was allowed by ETSI to implement
802.11 channel access mechanism based on a set of priority classes
which are taken from 802.11. According of the new standard there
might be some exceptions which require ETSI countries to follow
more restrictive rules. In such a case the AP's wmm IE need to
comply with ETSI limitation. To be able to do so the regulatory
domain passes the new limitation values if needed.
Implement this, by storing it and use it to calculate the new
WMM parameters.
This commit adds determination of regulator limitations to
NL80211_CMD_GET_WIPHY processing so that the information is available
for upper layer implementation to use later when constructing WMM
element.
Signed-off-by: Haim Dreyfuss <haim.dreyfuss@intel.com>
Add support for injecting frames to a given mesh peer, bypassing the
mpath table lookup using PROBE_MESH_LINK command. This helps to send
data frames over unexercised direct mesh path, which is not selected as
next_hop node. This can be helpful in measuring link metrics.
Signed-off-by: Pradeep Kumar Chitrapu <pradeepc@codeaurora.org>
In the case of the ap_csa_disable test, I frequently see
failures due to the kernel *not* having switched, but the
CSA-STARTED event having been processed, and thus the
frequency having been updated already.
This is wrong at least for AP mode, the frequency we store
for this case internally in nl80211 should only be updated
when the channel switch completes, otherwise we end up in
a situation where the switch is aborted and the kernel is
thus on the old channel, but the internal information has
been updated and every subsequent mgmt-frame TX fails due
to being tagged with the wrong channel.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
GnuTLS backend already accepts CA cert blobs in both DER and PEM
formats. Implement similar trial-and-error handling in OpenSSL backend.
Signed-off-by: Santtu Lakkala <santtu.lakkala@jolla.com>
When a new station is added, let it have some supported rates
(they're empty without this change), using the basic rates
that it must support to connect.
This, together with the kernel-side changes for client-side,
lets us finish the complete auth/assoc handshake with higher
rates than the mandatory ones, without any further config.
However, the downside to this is that a broken station that
doesn't check the basic rates are supported before it tries
to connect will possibly not get any response to its auth
frame.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Add a config option to allow setting a custom Basic NSS/MCS set. As a
default we use single stream HE-MCS 0-7.
Signed-off-by: Shashidhar Lakkavalli <slakkavalli@datto.com>
Signed-off-by: John Crispin <john@phrozen.org>
Set operating channel bandwidth and center frequencies using the same
attributes for VHT and HE.
Signed-off-by: Shashidhar Lakkavalli <slakkavalli@datto.com>
Signed-off-by: John Crispin <john@phrozen.org>
Process HE information in (Re)Association Request frames and add HE
elements into (Re)Association Response frames when HE is enabled in the
BSS.
Signed-off-by: Shashidhar Lakkavalli <slakkavalli@datto.com>
Signed-off-by: John Crispin <john@phrozen.org>
The HE Capibilities element has dynamic size due to the variable length
and optional fields at the end. Mask out the channel width capabilities
that are less than the configured. Only add the MCS/NSS sets for the
announced channel widths and also add the PPET elements.
Signed-off-by: Shashidhar Lakkavalli <slakkavalli@datto.com>
Signed-off-by: John Crispin <john@phrozen.org>
The PPE Thresholds information in the end of the HE Capabilities element
is optional and of variable length. struct he_ppe_threshold was not
really used correctly for encoding this, so remove it and just reserve
enough space for the information.
Signed-off-by: Shashidhar Lakkavalli <slakkavalli@datto.com>
Signed-off-by: John Crispin <john@phrozen.org>
This is used for both VHT and HE, so remove the misleading prefix.
Signed-off-by: Shashidhar Lakkavalli <slakkavalli@datto.com>
Signed-off-by: John Crispin <john@phrozen.org>
These are used for both VHT and HE, so remove the misleading prefix.
Signed-off-by: Shashidhar Lakkavalli <slakkavalli@datto.com>
Signed-off-by: John Crispin <john@phrozen.org>
These are used for both VHT and HE, so remove the misleading prefix.
Signed-off-by: Shashidhar Lakkavalli <slakkavalli@datto.com>
Signed-off-by: John Crispin <john@phrozen.org>
Bandwidth is used for both VHT and HE here.
Signed-off-by: Shashidhar Lakkavalli <slakkavalli@datto.com>
Signed-off-by: John Crispin <john@phrozen.org>
oper_chwidth is used for both VHT and HE here.
Signed-off-by: Shashidhar Lakkavalli <slakkavalli@datto.com>
Signed-off-by: John Crispin <john@phrozen.org>
The bandwidth values are shared between VHT and HE mode so remove the
VHT specific prefix.
Signed-off-by: Shashidhar Lakkavalli <slakkavalli@datto.com>
Signed-off-by: John Crispin <john@phrozen.org>
These bits might be set by the capabilities read from the kernel, so
mask them out if beamforming is not enabled in the local configuration.
Signed-off-by: Shashidhar Lakkavalli <slakkavalli@datto.com>
Signed-off-by: John Crispin <john@phrozen.org>
This copying attempt was added incorrectly since that element is never
actually present in (Re)Association Request frames. It is only valid to
copy that element from the mesh peering frames.
Signed-off-by: Jouni Malinen <j@w1.fi>
gcc 8.3.0 was apparently clever enough to optimize away the previously
used os_memset() to explicitly clear a stack buffer that contains keys
when that clearing happened just before returning from the function.
Since memset_s() is not exactly portable (or commonly available yet..),
use a less robust mechanism that is still pretty likely to prevent
current compilers from optimizing the explicit clearing of the memory
away.
Signed-off-by: Jouni Malinen <j@w1.fi>
Initialize auth_sock and acct_sock to -1 to avoid radius_server_deinit()
attempting to close fd=0 if anything fails in setting up the RADIUS
server.
Signed-off-by: Jouni Malinen <j@w1.fi>
The Session-Id derivation for EAP-AKA in RFC 5247 only explained how the
Session-Id is derived for regular authentication. Jouni reported it as
an errata with text explaining how to derive it during fast
reauthentication.
This patch now exports the Session-Id for EAP-AKA during fast
reauthentication based on this Session-Id = 0x17 || NONCE_S || MAC
construction.
Also documented by Alan Dekok in draft-dekok-emu-eap-session-id.
Signed-off-by: Mohit Sethi <mohit.sethi@aalto.fi>
The Session-Id derivation for EAP-SIM in RFC 5247 only explained how the
Session-Id is derived for regular authentication. Jouni reported it as
an errata with text explaining how to derive it during fast
reauthentication.
This patch now exports the Session-Id for EAP-SIM during fast
reauthentication based on this Session-Id = 0x12 || NONCE_S || MAC
construction.
Signed-off-by: Mohit Sethi <mohit.sethi@aalto.fi>
The rcons[] and Td4s[] array values need to be type cast explicitly to
u32 for the left shift 24 operation to be defined due to the implicit
conversion to int not handling the case where MSB would become 1 without
depending on UB.
Credit to OSS-Fuzz: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=14929
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
The IE header length check was off-by-one and that could allow the loop
to read one octet beyond the end of the buffer before breaking out in
the second check.
Credit to OSS-Fuzz: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=14927
Fixes: 0a66ce3c49 ("WNM: Add support for SSID List element matching")
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
The bootstrapping URI format for DPP was extended during protocol design
to allow a list of channels without having to repeat the same operating
class information for each channel. That change was not included in the
initial implementation of the parser and a channel-list like
"C:81/1,6,11" would not be understood correctly (i.e., only the longer
"C:81/1,81/6,81/11" form would have been parsed correctly).
Fix this by extending the parser to accept both the shorter and longer
form for a list of channels within a single operating class.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
IEEE Std 802.11ai-2016 requires the FILS STA to do this check, but this
was missing from the initial implementation. The AP side behavior was
not described properly in 802.11ai due to a missing change in the
(Re)Association Response frame format tables which has resulted in some
deployed devices not including the RSNE.
For now, use an interoperability workaround to ignore the missing RSNE
and only check the payload of the element if it is present in the
protected frame. In other words, enforce this validation step only with
an AP that implements FILS authentication as described in REVmd while
allowing older implementations to skip this check (and the protection
against downgrade attacks). This workaround may be removed in the future
if it is determined that most deployed APs can be upgraded to add RSNE
into the (Re)Association Response frames.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
This AP behavior was missing from IEEE Std 802.11ai-2016, but it is
needed for the RSNE validation to work correctly and for a FILS STA to
be able to perform the mandatory check for RSNE matching when processing
the (Re)Association Response frame (as described in 802.11ai). REVmd
will be updating the standard to cover this AP case, so prepare the
implementation to match that. Without this, a FILS STA might reject
association whenever using FILS authentication.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
If OCSP_resp_find_status() fails with the first OCSP_CERTID, the
generation of the second OCSP_CERTID ended up leaking memory. Fix this
by freeing the previously allocated OCSP_CERTID on that code path.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
Do not allow auth->own_protocol_key to be overridden without having
freed the previously stored key in case a test sequence in
dpp_proto_auth_conf_replaced_by_resp is used.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
Do not allow auth->peer_protocol_key to be overridden without having
freed the previously stored key in case two Authentication Response
messages are received.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
The result of EC_GROUP_dup() needs to be freed, so do so within the
derivation functions for all error cases and in the callers for success
cases.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
Use a separate error case handler for eap_pax_mac() failures and memcmp
to avoid wpa_hexdump() calls for the (mainly theoretical) local error
cases in deriving the MAC.
Fixes: b3c2b5d9f7 ("EAP-PAX server: Check hash function results")
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
This is mostly a theoretical case, but since crypto_bignum_rand() could
fail, need to free the allocated struct crypto_bignum *tmp in such a
case.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
BN_clear() does not free the BIGNUM; it only clears its value. Fix this
memory leak by using the appropriate BN_clear_free() function instead.
Fixes: b11fa98bcb ("Add explicit checks for peer's DH public key")
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
EC_GROUP_new_by_curve_name() allocates memory for the returned pointer,
so need to free this with EC_GROUP_free() before leaving the calling
functions. This was leaking memory when parsing JWK and when performing
PKEX.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
ec_params needs to be freed before returning from the function.
Extension of this function to support BoringSSL introduced this memory
leak and that was later extended to be the only variant and apply to
OpenSSL and LibreSSL cases as well in commit c23e87d0d1 ("OpenSSL:
Replace EVP_PKEY_paramgen() with EC_KEY_new_by_curve_name()").
Fixes: f29761297b ("BoringSSL: Implement crypto_ecdh_init()")
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
In practice, some APs have interop issues with the DUT. This sub command
is used to transfer the AP info between the driver and user space. This
works both as a command and event. As a command, it configures the
stored list of APs from user space to firmware; as an event, it
indicates the AP info detected by the firmware to user space for
persistent storage. The attributes defined in enum
qca_vendor_attr_interop_issues_ap are used to deliver the parameters.
Signed-off-by: Paul Zhang <paulz@codeaurora.org>
If none of the sr_control bits are set, we do not neet to add the IE to
the Beacon frame.
Signed-off-by: Shashidhar Lakkavalli <slakkavalli@datto.com>
Signed-off-by: John Crispin <john@phrozen.org>
While this should not happen in practical use cases,
wpa_get_ntp_timestamp() could return the same value when called twice in
a row quickly. Work around that case by enforcing a new Replay Counter
value based on stored last value.
Signed-off-by: Jouni Malinen <j@w1.fi>
Update enum qca_wlan_vendor_attr_get_wifi_info to add support for
attribute QCA_WLAN_VENDOR_ATTR_WIFI_INFO_RADIO_INDEX. In addition
update the documentation for qca_wlan_vendor_attr_get_wifi_info and
QCA_NL80211_VENDOR_SUBCMD_GET_WIFI_INFO to fully describe the
operation of the command and the format of the attributes.
Signed-off-by: Jeff Johnson <jjohnson@codeaurora.org>
Add a QCA vendor sub command QCA_NL80211_VENDOR_SUBCMD_BEACON_REPORTING
to implement beacon reporting feature. Different operations required to
implement this feature can be specified in
QCA_WLAN_VENDOR_ATTR_BEACON_REPORTING_OP_TYPE.
Userspace requests the driver/firmware to periodically report received
Beacon frames whose BSSID matches the current connected BSS's MAC
address. If userspace requests the driver/firmware to send beacon
reports actively, the driver encapsulates the details of the beacon in
an event and sends it to userspace asynchronously. Otherwise, the driver
will only update the beacon in cfg80211 scan cache but will not send any
event to userspace.
If this command is not issued, the current behavior of the
driver/firmware is to update the cfg80211 scan cache only when there is
a scan issued by the host in progress or whenever there is a change in
IEs of the Beacon frames from the current connected BSS.
The userspace requests the driver/firmware to stop reporting beacons
when reporting is not required anymore. If the driver/firmware is not
able to receive Beacon frames because of other Wi-Fi operations such as
off-channel activities, etc., the driver/firmware sends a pause event to
userspace and stops reporting Beacon frames. The driver/firmware
indicates whether the beacon reporting automatically resumes later by
using the QCA_WLAN_VENDOR_ATTR_BEACON_REPORTING_AUTO_RESUMES flag. If
userspace doesn't want the beacon reporting to be resumed automatically,
userspace can send QCA_WLAN_VENDOR_BEACON_REPORTING_OP_STOP command to
the driver to stop beacon reporting.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
This adds support to hostapd for configuring airtime policy settings for
stations as they connect to the access point. This is the userspace
component of the airtime policy enforcement system PoliFi described in
this paper: https://arxiv.org/abs/1902.03439
The Linux kernel part has been merged into mac80211 for the 5.1 dev
cycle.
The configuration mechanism has three modes: Static, dynamic and limit.
In static mode, weights can be set in the configuration file for
individual MAC addresses, which will be applied when the configured
stations connect.
In dynamic mode, weights are instead set per BSS, which will be scaled
by the number of active stations on that BSS, achieving the desired
aggregate weighing between the configured BSSes. Limit mode works like
dynamic mode, except that any BSS *not* marked as 'limited' is allowed
to exceed its configured share if a per-station fairness share would
assign more airtime to that BSS. See the paper for details on these
modes.
Signed-off-by: Toke Høiland-Jørgensen <toke@toke.dk>
This provides a mechanism for configuring per-STA airtime weight for
airtime policy configuration.
Signed-off-by: Toke Høiland-Jørgensen <toke@toke.dk>
Commit 373c796948 ("OpenSSL: Fix compile with OpenSSL 1.1.0 and
deprecated APIs") removed a call to ENGINE_load_dynamic() for newer
versions of OpenSSL, asserting that it should happen automatically.
That appears not to be the case, and loading engines now fails because
the dynamic engine isn't present.
Fix it by calling ENGINE_load_builtin_engines(), which works for all
versions of OpenSSL. Also remove the call to ERR_load_ENGINE_strings()
because that should have happened when SSL_load_error_strings() is
called anyway.
Fixes: 373c796948 ("OpenSSL: Fix compile with OpenSSL 1.1.0 and deprecated APIs")
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Maintain a single array (of struct with two int variables) instead of
two independent arrays (of int) for tracking know ifindexes and reasons
for having added them. The previous implementation tried to maintain two
independent arrays even though they were always required to be of
exactly same length and order. That had resulted in a bug earlier and
the code was not exactly easy to understand either, so replace this with
a single array.
Signed-off-by: Jouni Malinen <j@w1.fi>
Addition of a separate if_indices_reason array broke reallocation
failure checking. drv->if_indices or drv->if_indices_reason could not be
NULL in the place where this check was moved to. Fix that by maintaining
knowledge of reallocation failure in a separate local variable.
Fixes: 732b1d20ec ("nl80211: Clean up ifidx properly if interface in a bridge is removed")
Signed-off-by: Jouni Malinen <j@w1.fi>
There is no point in checking this pointer against NULL after it has
been dereferenced. Move the check to the beginning of the function.
Signed-off-by: Jouni Malinen <j@w1.fi>
This allows authenticator side to complete FT initial mobility domain
association using FT-EAP with PMKSA caching.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
When completing FT initial mobility domain association with EAP, store
XXKey/MPMK in the PMKSA cache instead of MSK. The previously stored MSK
was of no use since it could not be used as the XXKey for another FT
initial mobility domain association using PMKSA caching.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
This allows supplicant side to complete FT initial mobility domain
association using FT-EAP with PMKSA caching.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
When completing FT initial mobility domain association with EAP, store
XXKey/MPMK in the PMKSA cache instead of MSK. The previously stored MSK
was of no use since it could not be used as the XXKey for another FT
initial mobility domain association using PMKSA caching.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
It is apparently possible to somehow trigger the driver to report a
channel switch event during ACS operation when the interface information
is not yet complete. hapd->iface->current_mode could be NULL in that
case and that would result in process termination due to NULL pointer
dereference.
It should not really be possible to trigger a channel switch during ACS
is running (i.e., before the AP mode operation has been started), but
since that has been seen in an arbitrary test sequence with interface
start/stop operations with various parameters (both valid and invalid),
better prevent a crash here by ignoring the unexpected event instead of
trying to process it.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
Unexpected CHAN_SWITCH command could get this function using a NULL
pointer if the channel switch was requested while the interface was
already disabled.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
driver->hapd_deinit() is going to free the memory that the cached
pointers are pointing to, so clear the pointers to avoid possibility of
dereferencing used memory. It seemed to be possible to hit a code path
using those fields by issuing a CHAN_SWITCH command on disabled hostapd
interface in some cases.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
This adds a ieee80211ax=0/1 line to the STATUS output to indicate
the configuration of ieee80211ax, which similar to ieee80211n and
ieee80211ac.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
The first four octets of the element were used as a host byte order u32.
That is not correct on bigendian CPUs, so handle byte swapping needs
properly. Mark the he_oper_params field as le32 to explicitly indicate
the byte order and swap the generated params content based on CPU byte
order.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
The current code will always use the size required when all optional
elements are present. This will cause the Linux kernel to consider the
field to be malformed if the elements are not actually flagged as being
present.
Signed-off-by: Shashidhar Lakkavalli <slakkavalli@datto.com>
Signed-off-by: John Crispin <john@phrozen.org>
Start sharing common SAE and EAP-pwd functionality by adding a new
source code file that can be included into both. This first step is
bringing in a shared function to check whether a group is suitable.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
Move the identical function used by both SAE and EAP-pwd to
src/utils/common.c to avoid duplicated implementation.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
This converts crypto_bignum_to_bin() to use the OpenSSL/BoringSSL
functions BN_bn2binpad()/BN_bn2bin_padded(), when available, to avoid
differences in runtime and memory access patterns depending on the
leading bytes of the BIGNUM value.
OpenSSL 1.0.2 and LibreSSL do not include such functions, so those cases
are still using the previous implementation where the BN_num_bytes()
call may result in different memory access pattern.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
This reduces timing and memory access pattern differences for an
operation that could depend on the used password.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
This reduces timing and memory access pattern differences for an
operation that could depend on the used password.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
SPR allows us to detect OBSS overlaps and allows us to do adaptive CCA
thresholds. For this to work the AP needs to broadcast the element
first.
Signed-off-by: Shashidhar Lakkavalli <slakkavalli@datto.com>
Signed-off-by: John Crispin <john@phrozen.org>
Properly populate the the HE Capabilities element with the info read
from the kernel.
Signed-off-by: Shashidhar Lakkavalli <slakkavalli@datto.com>
Signed-off-by: John Crispin <john@phrozen.org>
According to P802.11ax/D4.0 9.4.2.238 (HE Operation element) the BSS
Color Information field is located after the HE Operation Parameters
field. Fix the ordering of the bit masks/offsets for fields in these 3+1
octets used as a single 32-bit value. With these changes, Wireshark 3.2
is able to properly parse and display Beacon frames.
Signed-off-by: Shashidhar Lakkavalli <slakkavalli@datto.com>
Signed-off-by: John Crispin <john@phrozen.org>
IEEE P802.11ax/D4.0 9.4.2.243 "HE Operation element" indicates that the
special value 1023 in the TXOP Duration RTS Threshold field is used to
indicate that TXOP duration-based RTS is disabled. Use that value as the
default instead of the previously used value 0 which would really mean
threshold of 0 usec. Furthermore, the previous implementation did not
allow values larger than 255 to be used for this field while the field
is actually 10 bits in size.
Signed-off-by: Shashidhar Lakkavalli <slakkavalli@datto.com>
Signed-off-by: John Crispin <john@phrozen.org>
Add code to parse NL80211_BAND_ATTR_IFTYPE_DATA when reading the band
info. This is needed to find out about the local HE capabilities in AP
mode.
Signed-off-by: Shashidhar Lakkavalli <slakkavalli@datto.com>
Signed-off-by: John Crispin <john@phrozen.org>
The QCA_NL80211_VENDOR_SUBCMD_GET_HE_CAPABILITIES attributes are not
up-to-date with the latest P802.11ax/D4.0 capabilities and would need to
be updated or replaced. Since the variables from this functionality were
not used for anything in practice, it is easier to simply remove this
functionality completely to avoid issues with upcoming updates to use
upstream nl80211 information to determine HE capabilities.
This is practically reverting the commit ca1ab9db2a ("hostapd: Get
vendor HE capabilities").
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
This makes it easier to upper layer components to manage operating
channels in cases where the same radio is shared for both station and AP
mode virtual interfaces.
Signed-off-by: Omer Dagan <omer.dagan@tandemg.com>
Logs involving IEEE 802.11 Status Codes output the Status Code value,
but do not provide any explanation of what the value means. This change
provides a terse explanation of each status code using the latter part
of the Status Code #define names.
Signed-off-by: Alex Khouderchah <akhouderchah@chromium.org>
These cases are for the IEEE 802.11 Status Code and Reason Code and
those fields are unsigned 16 bit values, so use the more appropriate
type consistently. This is mainly to document the uses and to make the
source code easier to understand.
Signed-off-by: Jouni Malinen <j@w1.fi>
Logs involving IEEE 802.11 Reason Codes output the Reason Code value,
but do not provide any explanation of what the value means. This change
provides a terse explanation of each Reason Code using the latter part
of the reason code #define names.
Signed-off-by: Alex Khouderchah <akhouderchah@chromium.org>
The new hostapd configuration parameter dpp_controller can now be used
with the following subparameter values: ipaddr=<IP address>
pkhash=<hexdump>. This adds a new Controller into the configuration
(i.e., more than one can be configured) and all incoming DPP exchanges
that match the specified Controller public key hash are relayed to the
particular Controller.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
Add initial implementation of DPP-over-TCP. This adds the general TCP
encapsulation routines into the shared src/common/dpp.c implementation.
That functionality will be exposed through hostapd and wpa_supplicant in
the following commits.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
This can be helpful for testing DPP2 Controller functionality (get
pkhash from Controller to Relay).
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
This can be used to provide configurable parameter to the global DPP
context. This initial commit introduces the msg_ctx context pointer for
wpa_msg().
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
Update the version number for the build and also add the ChangeLog
entries for both hostapd and wpa_supplicant to describe main changes
between v2.7 and v2.8.
Signed-off-by: Jouni Malinen <j@w1.fi>
EAP-PAX server implementation could end up reading beyond the end of the
buffer if MSGDUMP level debugging was enabled and a message without the
ICV field was received. Fix this by using more strict message length
validation.
Signed-off-by: Jouni Malinen <j@w1.fi>
While this is mostly theoretical, the hash functions can fail and it is
better for the upper layer code to explicitly check for such failures.
Signed-off-by: Jouni Malinen <j@w1.fi>
Do not try to derive a PMK-R0 and PMK-R1 again for the case where an
association was started with FT protocol and PTK is rekeyed using 4-way
handshake. Instead, use the previously derived PMK-R1 to allow a new PTK
to be derived.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
Do not try to derive a PMKID for EAPOL-key msg 1/4 when going through
4-way handshake to rekey PTK during an association that was started
through FT protocol.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
This is needed to allow PTK rekeying to be performed through 4-way
handshake in an association started through FT protocol.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
This is needed to avoid leaving some timers (e.g., for PTK rekeying)
running afrer a STA has disassociated.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
FT rules for PTK derivation do not use PMK. Remove the unused argument
to the PTK derivation function.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
There is no PMK/PMKID when going through 4-way handshake during an
association started with FT protocol, so need to allow the operation to
proceed even if there is no selected PMKSA cache entry in place.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
The PMK and PMKID information from FILS ERP and FILS PMKSA caching needs
to be stored within struct wpa_state_machine for PTK to work. Without
this, PTK derivation would fail and attempt to go through rekeying would
result in disconnection. Furthermore, wpa_rekey_ptk() timer needs to be
started at the completion of FILS association since the place where it
was done for non-FILS cases at the end of 4-way handshake is not reached
when FILS authentication is used.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
All nla_put*() operations should be verified to succeed, so check this
recently added one for NL80211_ATTR_EXTERNAL_AUTH_SUPPORT.
Fixes: 236e793e7b ("nl80211: External authentication in driver-based AP SME mode")
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
Commit 4b16c15bbc ("EAP-pwd server: Use os_get_random() for
unpredictable token") replaced use of os_random(), i.e., of random(),
with os_get_random(), but forgot to remove the now unused srandom()
call. Clean up the implementation and remove that unneeded code.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
Unexpected fragment might result in data->inbuf not being allocated
before processing and that could have resulted in NULL pointer
dereference. Fix that by explicitly checking for data->inbuf to be
available before using it.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
data->inbuf allocation might fail and if that were to happen, the next
fragment in the exchange could have resulted in NULL pointer
dereference. Unexpected fragment with more bit might also be able to
trigger this. Fix that by explicitly checking for data->inbuf to be
available before using it.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
Report failure from getKey() if MSK cannot be derived due to unexpected
sha1_vector() local failure.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
There are number of deployed APs with broken PMF implementation where
the IGTK KDE uses swapped bytes in the KeyID field (0x0400 and 0x0500
instead of 4 and 5). Such APs cannot be trusted to implement BIP
correctly or provide a valid IGTK, so do not try to configure this key
with swapped KeyID bytes. Instead, continue without configuring the IGTK
so that the driver can drop any received group-addressed robust
management frames due to missing keys.
Normally, this error behavior would result in us disconnecting, but
there are number of deployed APs with this broken behavior, so as an
interoperability workaround, allow the connection to proceed.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
Previously wpa_supplicant_key_neg_complete() was called before the
attempt to configure the IGTK received from the authenticator. This
could resulted in somewhat surprising sequence of events if IGTK
configuration failed since completion event would be followed by
immediate disconnection event. Reorder these operations so that
completion is reported only if GTK and IGTK are configurated
successfully.
Furthermore, check for missing GTK KDE in case of RSN and handle that
with an explicit disconnection instead of waiting for the AP to deliver
the GTK later.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
When processing the NL80211_CMD_PROBE_CLIENT command response, the
nl80211 layer in the kernel sends a response containing the cookie
associated with the client probe request. This response was not handled
by driver_nl80211.c when sending the command, and it was mistakenly
handled as an asynchronous event. This incorrect event did not include
the MAC/ACK attributes, so it was ignored in practice, but nevertheless,
the command response should not be processed as an event.
Fix this by reading the response as part of the sending the command
flow.
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Include the MAC address of the peer, knowledge of whether the poll was
ACKed, and cookie into the debug message to make this more useful.
Signed-off-by: Jouni Malinen <j@w1.fi>
It looks like it is possible for the RECEIVE state to leak memory where
a previously allocated sm->lki is moved to sm->oki while sm->oki is
pointing to not yet freed entry. It is not clear how this can be
triggered, but it has come up in hwsim testing under heavy load.
Free sm->oki if it is still set in RECEIVE before replacing it with
sm->lki to avoid this memory leak.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
It is possible for the SAE state machine to remove the STA and free the
sta pointer in the mesh use cases. handle_auth_sae() could have
dereferenced that pointer and used freed memory in some cases. Fix that
by explicitly checking whether the STA was removed.
Fixes: bb598c3bdd ("AP: Add support for full station state")
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
ap_free_sta() frees the sta entry, so sta->addr cannot be used after
that call. Fix the sequence of these two calls to avoid use of freed
memory to determine which PMKSA cache entry to remove.
Fixes: 9f2cf23e2e ("mesh: Add support for PMKSA caching")
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
Move event.assoc_info.freq selection to be after the
nl80211_get_assoc_ssid() call so that the current cfg80211 information
on the operating channel can be used should anything unexpected have
happened between the association request and completion of association.
Furthermore, update bss->freq based on assoc_freq to make that
information a bit more useful for station mode. It was already updated
after channel switches during association, but not at the beginning of
association.
Signed-off-by: Jouni Malinen <j@w1.fi>
This fixes some issues where bss->freq could have been used to replace
the current operating channel when sending out a management frame.
bss->freq has not been consistently used to track the current operating
channel in station mode, so it should not be trusted for this type of
uses. Clearing it makes this a bit more robust by at least avoiding the
cases of information from past association being used.
Signed-off-by: Jouni Malinen <j@w1.fi>
None of the ECC groups supported in the implementation had a cofactor
greater than 1, so these checks are unreachable and for all cases, the
cofactor is known to be 1. Furthermore, RFC 5931 explicitly disallow use
of ECC groups with cofactor larger than 1, so this checks cannot be
needed for any curve that is compliant with the RFC.
Remove the unneeded group cofactor checks to simplify the
implementation.
Signed-off-by: Jouni Malinen <j@w1.fi>
Based on the SAE implementation guidance update to not allow ECC groups
with a prime that is under 256 bits, reject groups 25, 26, and 27 in
EAP-pwd.
Signed-off-by: Jouni Malinen <j@w1.fi>
It looks like SSL_CTX_set1_curves_list() command alone is not sufficient
to enable ECDH curve selection with older OpenSSL versions for TLS
server, so enable automatic selection first and specify the exact list
of curves after that.
This fixes failures in openssl_ecdh_curves test case when hostapd uses
OpenSSL 1.0.2.
Signed-off-by: Jouni Malinen <j@w1.fi>
The external authentication command and event does not need to copy the
BSSID/SSID values into struct external_auth since those values are used
before returning from the call. Simplify this by using const u8 * to
external data instead of the array with a copy of the external data.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
Extend commit 5ff39c1380 ("SAE: Support external authentication
offload for driver-SME cases") to support external authentication
with drivers that implement AP SME by notifying the status of
SAE authentication to the driver after SAE handshake as the
driver acts as a pass through for the SAE Authentication frames.
Signed-off-by: Srinivas Dasari <dasaris@codeaurora.org>
This extends driver interface to nl80211 by introducing the following
changes,
1. Register for Authenication frames in driver-based AP SME mode.
2. Advertise NL80211_ATTR_EXTERNAL_AUTH_SUPPORT in set_ap when
offloaded SAE authentication is supported.
3. Extend the NL80211_CMD_EXTERNAL_AUTH interface to also send PMKID
so that the drivers can respond to the PMKSA cached connection
attempts from the stations avoiding the need to contact user space
for all PMKID-based connections.
4. Send external auth status to driver only if it is a driver based
SME solution.
Signed-off-by: Srinivas Dasari <dasaris@codeaurora.org>
beacon_set_done did not get reset to zero on disabling interface using
DISABLE control interface command and the subsequent ENABLE command will
caused configuration of Beacon/Probe Response/Association Response frame
IEs twice. The unnecessary two step configuration can be avoided by
resetting beacon_set_done on DISABLE so that ENABLE can bring up the
interface in a single step with fully updated IEs.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
Binary presentations of element and scalar can be written directly to
the allocated commit message buffer instead of having to first write
them into temporary buffers just to copy them to the actual message
buffer.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
RFC 5931 has these conditions as MUST requirements, so better follow
them explicitly even if the rand,mask == 0 or rand+mask == 0 or 1 cases
are very unlikely to occur in practice while generating random values
locally.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
This adds an explicit check for 0 < x,y < prime based on RFC 5931,
2.8.5.2.2 requirement. The earlier checks might have covered this
implicitly, but it is safer to avoid any dependency on implicit checks
and specific crypto library behavior. (CVE-2019-9498 and CVE-2019-9499)
Furthermore, this moves the EAP-pwd element and scalar parsing and
validation steps into shared helper functions so that there is no need
to maintain two separate copies of this common functionality between the
server and peer implementations.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
When processing an EAP-pwd Commit frame, the server's scalar and element
(elliptic curve point) were not validated. This allowed an adversary to
bypass authentication, and act as a rogue Access Point (AP) if the
crypto implementation did not verify the validity of the EC point.
Fix this vulnerability by assuring the received scalar lies within the
valid range, and by checking that the received element is not the point
at infinity and lies on the elliptic curve being used. (CVE-2019-9499)
The vulnerability is only exploitable if OpenSSL version 1.0.2 or lower
is used, or if LibreSSL or wolfssl is used. Newer versions of OpenSSL
(and also BoringSSL) implicitly validate the elliptic curve point in
EC_POINT_set_affine_coordinates_GFp(), preventing the attack.
Signed-off-by: Mathy Vanhoef <mathy.vanhoef@nyu.edu>
When processing an EAP-pwd Commit frame, verify that the peer's scalar
and elliptic curve element differ from the one sent by the server. This
prevents reflection attacks where the adversary reflects the scalar and
element sent by the server. (CVE-2019-9497)
The vulnerability allows an adversary to complete the EAP-pwd handshake
as any user. However, the adversary does not learn the negotiated
session key, meaning the subsequent 4-way handshake would fail. As a
result, this cannot be abused to bypass authentication unless EAP-pwd is
used in non-WLAN cases without any following key exchange that would
require the attacker to learn the MSK.
Signed-off-by: Mathy Vanhoef <mathy.vanhoef@nyu.edu>
When processing an EAP-pwd Commit frame, the peer's scalar and element
(elliptic curve point) were not validated. This allowed an adversary to
bypass authentication, and impersonate any user if the crypto
implementation did not verify the validity of the EC point.
Fix this vulnerability by assuring the received scalar lies within the
valid range, and by checking that the received element is not the point
at infinity and lies on the elliptic curve being used. (CVE-2019-9498)
The vulnerability is only exploitable if OpenSSL version 1.0.2 or lower
is used, or if LibreSSL or wolfssl is used. Newer versions of OpenSSL
(and also BoringSSL) implicitly validate the elliptic curve point in
EC_POINT_set_affine_coordinates_GFp(), preventing the attack.
Signed-off-by: Mathy Vanhoef <mathy.vanhoef@nyu.edu>
Explicitly verify that own and peer commit scalar/element are available
when trying to check SAE confirm message. It could have been possible to
hit a NULL pointer dereference if the peer element could not have been
parsed. (CVE-2019-9496)
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
Try to avoid showing externally visible timing or memory access
differences regardless of whether the derived pwd-value is smaller than
the group prime.
This is related to CVE-2019-9494.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
This is an initial step towards making the FFC case use strictly
constant time operations similarly to the ECC case.
sae_test_pwd_seed_ffc() does not yet have constant time behavior,
though.
This is related to CVE-2019-9494.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
These groups have significant probability of coming up with pwd-value
that is equal or greater than the prime and as such, need for going
through the PWE derivation loop multiple times. This can result in
sufficient timing different to allow an external observer to determine
how many rounds are needed and that can leak information about the used
password.
Force at least 40 loop rounds for these MODP groups similarly to the ECC
group design to mask timing. This behavior is not described in IEEE Std
802.11-2016 for SAE, but it does not result in different values (i.e.,
only different timing), so such implementation specific countermeasures
can be done without breaking interoperability with other implementation.
Note: These MODP groups 22, 23, and 24 are not considered sufficiently
strong to be used with SAE (or more or less anything else). As such,
they should never be enabled in runtime configuration for any production
use cases. These changes to introduce additional protection to mask
timing is only for completeness of implementation and not an indication
that these groups should be used.
This is related to CVE-2019-9494.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
Make the non-failure path in the function proceed without branches based
on r_odd and in constant time to minimize risk of observable differences
in timing or cache use. (CVE-2019-9494)
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
The QR test result can provide information about the password to an
attacker, so try to minimize differences in how the
sae_test_pwd_seed_ecc() result is used. (CVE-2019-9494)
Use heap memory for the dummy password to allow the same password length
to be used even with long passwords.
Use constant time selection functions to track the real vs. dummy
variables so that the exact same operations can be performed for both QR
test results.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
This algorithm could leak information to external observers in form of
timing differences or memory access patterns (cache use). While the
previous implementation had protection against the most visible timing
differences (looping 40 rounds and masking the legendre operation), it
did not protect against memory access patterns between the two possible
code paths in the masking operations. That might be sufficient to allow
an unprivileged process running on the same device to be able to
determine which path is being executed through a cache attack and based
on that, determine information about the used password.
Convert the PWE finding loop to use constant time functions and
identical memory access path without different branches for the QR/QNR
cases to minimize possible side-channel information similarly to the
changes done for SAE authentication. (CVE-2019-9495)
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
Get rid of the branches that depend on the result of the Legendre
operation. This is needed to avoid leaking information about different
temporary results in blinding mechanisms.
This is related to CVE-2019-9494 and CVE-2019-9495.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
These functions can be used to help implement constant time operations
for various cryptographic operations that must minimize externally
observable differences in processing (both in timing and also in
internal cache use, etc.).
This is related to CVE-2019-9494 and CVE-2019-9495.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
This helps in reducing measurable timing differences in operations
involving private information. BoringSSL has removed BN_FLG_CONSTTIME
and expects specific constant time functions to be called instead, so a
bit different approach is needed depending on which library is used.
The main operation that needs protection against side channel attacks is
BN_mod_exp() that depends on private keys (the public key validation
step in crypto_dh_derive_secret() is an exception that can use the
faster version since it does not depend on private keys).
crypto_bignum_div() is currently used only in SAE FFC case with not
safe-prime groups and only with values that do not depend on private
keys, so it is not critical to protect it.
crypto_bignum_inverse() is currently used only in SAE FFC PWE
derivation. The additional protection here is targeting only OpenSSL.
BoringSSL may need conversion to using BN_mod_inverse_blinded().
This is related to CVE-2019-9494 and CVE-2019-9495.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
These wpa_supplicant network profile parameters could be used to specify
a single match string that would be used against the dNSName items in
subjectAltName or CN. There may be use cases where more than one
alternative match string would be useful, so extend these to allow a
semicolon delimited list of values to be used (e.g.,
"example.org;example.com"). If any of the specified values matches any
of the dNSName/CN values in the server certificate, consider the
certificate as meeting this requirement.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
Incorrect gen->type value was used to check whether subjectAltName
contained dNSName entries. This resulted in all domain_match and
domain_suffix_match entries failing to find a match and rejecting the
server certificate. Fix this by checking against the correct type
definition for dNSName.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
Previously the EAP user database had to include a wildcard entry for ERP
to work since the keyName-NAI as User-Name in Access-Request would not
be recognized without such wildcard entry (that could point to any EAP
method). This is not ideal, so add a separate check to allow any stored
ERP keyName-NAI to be used for ERP without any requirement for the EAP
user database to contain a matching entry.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
Inclusion of common/dpp.h into hostapd/main.c brought in an undesired
unconditional dependency on OpenSSL header files even for builds where
DPP is not enabled. Fix this by making the dpp.h contents, and in
particular the inclusion of openssl/x509.h, conditional on CONFIG_DPP.
Fixes: 87d8435cf9 ("DPP: Common configurator/bootstrapping data management")
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
The rules defining which DH groups are suitable for SAE use were
accepted into IEEE 802.11 REVmd based on this document:
https://mentor.ieee.org/802.11/dcn/19/11-19-0387-02-000m-addressing-some-sae-comments.docx
Enforce those rules in production builds of wpa_supplicant and hostapd.
CONFIG_TESTING_OPTIONS=y builds can still be used to select any o the
implemented groups to maintain testing coverage.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
identity_buf may be NULL here. Handle this case explicitly by printing
"N/A" instead relying on snprintf converting this to "(null)" or some
other value based on unexpected NULL pointer.
Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
While commit 1c156e783d ("Fixed tls_prf() to handle keys with
odd length") added support for keys with odd length, the function
never reached this code as the function would return earlier in
case the key length was odd. Fix this by removing the first check
for the key length.
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
This commit introduces an attribute
QCA_WLAN_VENDOR_ATTR_ROAM_AUTH_REASON to carry the roam reason code
through QCA_NL80211_VENDOR_SUBCMD_KEY_MGMT_ROAM_AUTH event.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
Avoid duplicated code in each user of dpp_build_conf_req() by moving the
common encapsulation case into this helper function.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
When connected using FT-SAE key mgmt, use PMK from PMKSA cache as XXKey
for PMK-R0 and PMK-R1 derivations. This fixes an issue where FT key
hierarchy could not be established due to missing (not yet configured)
XXKey when using SAE PMKSA caching for the initial mobility domain
association.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
In the case of the driver not supporting full AP mode STA state (i.e.,
not adding a STA entry before association), the QoS parameters are not
allowed to be modified when going through (re)association exchange for a
STA entry that has not been removed from the kernel. cfg80211 would
reject such command to update STA flags, so do not add the WMM parameter
in this case.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
Ethernet frames have minimum length of 64 octets and shorter frames may
end up getting arbitrary padding in the end. This would result in the
FT/RRB receiver rejecting the frame as an incorrectly protected one.
Work around this by padding the message so that it is never shorter than
the minimum Ethernet frame.
Unfortunately, this padding is apparently not enough with all Ethernet
devices and it is still possible to see extra two octet padding at the
end of the message even if larger frames are used (e.g., showed up with
128 byte frames). For now, work around this by trying to do AES-SIV
decryption with two octets shorter frame (ignore last two octets) if the
first attempt fails.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
Merge the practically copy-pasted implementations in wpa_supplicant and
hostapd into a single shared implementation in dpp.c for managing
configurator and boostrapping information. This avoid unnecessary code
duplication and provides a convenient location for adding new global DPP
data.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
The memcpy calls added for exposing the PMK from wpa_auth module could
end up trying to copy the same memory buffer on top of itself.
Overlapping memory areas are not allowed with memcpy, so this could
result in undefined behavior. Fix this by making the copies conditional
on the updated value actually coming from somewhere else.
Fixes: b08c9ad0c7 ("AP: Expose PMK outside of wpa_auth module")
Signed-off-by: Jouni Malinen <j@w1.fi>
The offset update for copying KEK2 from the extended PTK was overriding
the offset instead of incrementing it (a likely copy-paste error from
the first offset assignment based on KCK). This resulted in KEK2 being
set to incorrect segment of PTK. Fix this by updating the offset
properly so that KEK2 is copied from the correct place at the end of the
PTK.
Fixes: 2f37387812 ("FILS: Add more complete support for FT-FILS use cases")
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
SSL_use_certificate_chain_file() is not available in the current
BoringSSL even though the defined OPENSSL_VERSION_NUMBER is large enough
to claim that this function would be present in the OpenSSL API.
Fall back to using SSL_use_certificate_file() with BoringSSL to fix the
build.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
This code was after the FILS handling that would have encrypted the
frame. While FILS and OWE are never used together, the OWE handling
should really be before the FILS handling since no IEs can be added
after the FILS encryption step. In addition, the Diffie-Hellman
Parameter element is not a Vendor Specific element, so it should be
before some of the Vendor Specific elements even though it is not
defined in IEEE 802.11.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
Use Diffie-Hellman key exchange to derivate additional material for
PMK-to-PTK derivation to get PFS. The Diffie-Hellman Parameter element
(defined in OWE RFC 8110) is used in association frames to exchange the
DH public keys. For backwards compatibility, ignore missing
request/response DH parameter and fall back to no PFS in such cases.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
DPP allows Diffie-Hellman exchange to be used for PFS in PTK derivation.
This requires an additional Z.x (x coordinate of the DH shared secret)
to be passed to wpa_pmk_to_ptk(). This commit adds that to the function
and updates all the callers to pass NULL,0 for that part in preparation
of the DPP specific changes to start using this.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
The previous OWE implementation on the AP side rejected any
(Re)Association Request frame with the Diffie-Hellman Parameter element
if AKM was not OWE. This breaks compatibility with DPP PFS, so relax
that rule to allow DPP AKM to be used as well. While this commit alone
does not add support for PFS, this allows interoperability between
non-PFS implementation on the AP and a newer PFS implementation on the
STA.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
Allow an additional context value to be passed to TLS exporter as
specified in RFC 5705 section 4.
This does not yet implement it for the internal TLS implementation.
However, as currently nothing uses context yet, this will not break
anything right now. WolfSSL maintainers also stated that they are not
going to add context support yet, but would look into it if/when this is
required by a published draft or a standard.
Signed-off-by: Ervin Oro <ervin.oro@aalto.fi>
This allows devices supporting DPP protocol version 2 or newer to
provision networks that enable both the legacy (PSK/SAE) and DPP
credentials.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
Share a single parsing implementation for both hostapd and
wpa_supplicant to avoid code duplication. In addition, clean up the
implementation to be more easily extensible.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
X509_get_subject_name() in OpenSSL 1.0.2 does not mark its argument as a
const pointer, so need to type cast this to avoid a build warning.
Fixes: 841205a1ce ("OpenSSL: Add 'check_cert_subject' support for TLS server")
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
The queue_len * 50 ms wait time was too large with the retransmission
timeouts used in the mesh case for SAE. The maximum wait of 750 ms was
enough to prevent successful completion of authentication after having
hit the maximum queue length. While the previous commit is enough to
allow this to complete successfully in couple of retries, it looks like
a smaller wait time should be used here even if it means potentially
using more CPU.
Drop the processing wait time to queue_len * 10 ms so that the maximum
wait time is 150 ms if the queue is full.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
The previous design of simply queuing all SAE commit messages was not
exactly good at allowing recovery from a flooding state if the valid
peer used frequent retransmissions of the SAE message. This could
happen, e.g., with mesh BSSs using SAE. The frequent retransmissions and
restarts of SAE authentication combined with SAE confirm messages
bypassing the queue ended up in not being able to finish SAE exchange
successfully.
Fix this by modifying the queuing policy to queue SAE confirm messages
if there is a queued SAE commit message from the same peer so that the
messages within the same exchange do not get reordered. In addition,
replace queued SAE commit/confirm message if a new matching message is
received from the same peer STA. This is useful for the case where the
peer restarts SAE more quickly than the local end has time to process
the queued messages.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
Use this new message from Enrollee to Configurator to indicate result of
the config object provisioning if both devices support protocol version
2 or newer.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
Do not set sm->timer_tick_enabled if the eloop_register_timeout() call
fails so that the next attempt to enable the timer in
eapol_enable_timer_tick() can try to recover from unexpected eloop
failures. This should not really be needed in practical use cases, but
certain out-of-memory test cases can trigger allocation failure in
eloop_register_timeout() and if that happens, the previous EAPOL
supplicant state machine implementation got pretty much completely stuck
for any operation needing the timer.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
Verify that the AP uses matching PMKR1Name in (Re)Association Response
frame when going through FT initial mobility domain association using
FILS. Thise step was missing from the initial implementation, but is
needed to match the IEEE 802.11ai requirements for explicit confirmation
of the FT key hierarchy (similarly to what is done in FT 4-way handshake
when FILS is not used).
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
Derive PMKR1Name during the FILS authentication step, verify that the
station uses matching PMKR1Name in (Re)Association Request frame, and
add RSNE[PMKR1Name] into (Re)Association Response frame when going
through FT initial mobility domain association using FILS. These steps
were missed from the initial implementation, but are needed to match the
IEEE 802.11ai requirements for explicit confirmation of the FT key
hierarchy (similarly to what is done in FT 4-way handshake when FILS is
not used).
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
This gets rid of a confusing error message "FILS: Failed to add PMKSA
cache entry based on ERP" for cases where PMKSA caching is disabled in
hostapd (disable_pmksa_caching=1). Functionality remains unchanged,
i.e., no cache entry was added before this change either.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
NL80211_CMD_GET_KEY response may return the actual key in addition to
the last used sequence number that we need. That might result in a key
being left in unused heap memory after the buffer is freed.
Explicitly clear the message payload with the possibly included key
material from heap memory before returning from the handler function
(and having libnl free the nlmsg) when key information is obtained from
the driver using the NL80211_CMD_GET_KEY command.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
Add a check in nl80211 driver layer to not include PMK while sending
NL80211_CMD_DEL_PMKSA explicitly. Though it is taken care already in
supplicant layer by setting the pmk_len to zero, it would be good
to have a check in nl80211 layer in order to avoid future accidental
inclusions of keying material in commands that do not need them.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
Send out the new Protocol Version attribute in Authentication
Request/Response messages and determine the peer version based on this
attribute.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
hostapd configuration parameters fragm_threshold and rts_threshold were
documented to disable the threshold with value -1 and not change driver
configuration if the parameter is not included. However, -1 was mapped
into not changing the driver value, so the explicit disabling part did
not work.
Replace the default values for these to be -2 so that explicitly set
configuration value -1 can be distinguished from the case of not
including the parameter. Map the -1 value to a driver request to disable
the threshold. Ignore any error from this operation just in case to
avoid breaking functionality should some drivers not accept the (u32) -1
value as a threshold value request to disable the mechanism.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
This subcommand is used to update Zigbee state and specified WLAN
durations to enhance success ratio of Zigbee joining network. The
attributes defined in enum qca_mpta_helper_vendor_attr are used to
deliver these parameters to the driver.
Signed-off-by: stonez <stonez@codeaurora.org>
Peer rate statistics is per-peer cached data in the driver. These
statistics needs to be flushed to a user space application on
synchronous/asynchronous events. This command is used as an event from
the driver to flush per-peer cached statistics to the application.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
This patch added 'check_cert_subject' support to match the value of
every field against the DN of the subject in the client certificate. If
the values do not match, the certificate verification will fail and will
reject the user.
This option allows hostapd to match every individual field in the right
order, also allow '*' character as a wildcard (e.g OU=Development*).
Note: hostapd will match string up to 'wildcard' against the DN of the
subject in the client certificate for every individual field.
Signed-off-by: Paresh Chaudhary <paresh.chaudhary@rockwellcollins.com>
Signed-off-by: Jared Bents <jared.bents@rockwellcollins.com>
Signed-off-by: Jouni Malinen <j@w1.fi>
These parameters were using the u8*/len style types even though they
were used as char* strings without an explicit length field. Make this
char* instead of u8* to avoid confusion and unnecessary type casting.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
This gets rid of some static analyzer warnings about uninitialized
variables being used in comparisons or write operations.
Signed-off-by: Jouni Malinen <j@w1.fi>
Include only one of hostapd_mgmt_rx() and hostapd_action_rx() functions
in the build. Previously, NEED_AP_MLME builds (i.e., cases where hostapd
AP MLME implementation is included) included both of these functions and
both were tried in sequence. In addition to being difficult to
understand, that could result in unexpected behavior if
hostapd_mgmt_rx() rejected a frame and return 0 to allow
hostapd_action_rx() to attempt to process the frame.
All the operations included in hostapd_action_rx() are supposed to be
available through the hostapd_mgmt_rx() call in handle_action() and
those should result in the exact same Category/Action-based handler
function to be called in the end. As such, this should not result in
different behavior. And if there is a difference, that would be pointing
at a hidden bug that would need to be fixed anyway. Furthermore, builds
without NEED_AP_MLME would not have any difference in behavior or
contents of the binary either.
Signed-off-by: Jouni Malinen <j@w1.fi>
There is no need to go through the following handler calls in
hostapd_action_rx() after having found the matching WLAN_ACTION_WNM
handler.
Signed-off-by: Jouni Malinen <j@w1.fi>
hostapd_action_rx() was pointing at incorrect field (Action vs.
Category) for the wpa_ft_action_rx() call and the length check for SA
Query Action frames. This resulted in those frames getting dropped as
invalid (FT) or ignored as truncated (SA Query). Fix this by pointing to
the correct place at the beginning of the frame body.
This issue had a long history. These were broken during cleanup in
commit dbfb8e82ff ("Remove unnecessary EVENT_RX_ACTION") which
actually fixed the initial reason for the error accidentally. It was
just that that error was needed to cancel out another earlier error..
One of the errors came from misuse of the EVENT_RX_ACTION API in commit
deca6eff74 ("atheros: Add new IEEE 802.11r driver_ops"). That pointed
struct rx_action data/len to cover the Action frame from the Category
field to the end of the frame body while the API was documented to cover
Action field to the end of the frame body. This error was cancelled by
another error in commit 88b32a99d3 ("FT: Add FT AP support for drivers
that manage MLME internally") that called wpa_ft_action_rx() with the
struct rx_action::data field as the second argument. That argument needs
to point to the Category field, but that struct rx_action field was
supposed to point to the Action field.
Number of the Action frame handlers added into hostapd_action_rx() had
been fixed more or less accidentally after this in various other
commits, but the FT and SA Query handlers had ended up maintaining the
incorrect operations. This is now fixing those.
This seems to fix at least some cases of FT-over-DS with drivers that
use driver-based AP MLME. Such drivers might use internal SA Query
processing, so it is not clear whether that part actually fixes any real
issues.
Signed-off-by: Jouni Malinen <j@w1.fi>
The struct hostapd_eap_user changes with a new allocated variable were
not covered in the RADIUS server code. Fix this by using eap_user_free()
instead of custom memory freeing operation in radius_server.c.
The hwsim tests with salted password (ap_wpa2_eap_pwd_salt_sha1,
ap_wpa2_eap_pwd_salt_sha256, ap_wpa2_eap_pwd_salt_sha512) triggered
these memory leaks.
Fixes: d52ead3db7 ("EAP-pwd server: Add support for salted password databases")
Signed-off-by: Masashi Honma <masashi.honma@gmail.com>
Copy the Finite Cyclic Group field value from the request to the
response Authentication frame if we end up rejecting the request due to
unsupported group.
IEEE Std 802.11-2016 has conflicting statements about this behavior.
Table 9-36 (Presence of fields and elements in Authentication frames)
indicates that the Finite Cyclic Group field is only included with
status code values 0 (success) and 76 (anti-clogging token request)
while SAE protocol description implying that the Finite Cyclic Group
field is set to the rejected group (12.4.8.6.3 and 12.4.8.6.4).
The standard language needs to cleaned up to describe this
unambiguously, but since it looks safe to add the field into the
rejection case and since there is desire to have the field present to be
able to implement what exactly is stated in 12.4.8.6.4, it looks
reasonable to move ahead with the AP mode implementation change. There
is no change in wpa_supplicant for now to modify its behavior based on
whether this field is present, i.e., wpa_supplicant will continue to
work with both the old and new hostapd behavior for SAE group
negotiation.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
tmp2 (y^2) was derived once in each iteration of the loop and only freed
after all the loop iterations. Fix this by freeing the temporary value
during each iteration.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
The new hostapd configuration parameter wps_cred_add_sae=1 can be used
to request hostapd to add SAE configuration whenever WPS is used to
configure the AP to use WPA2-PSK and the credential includes a
passphrase (instead of PSK). This can be used to enable WPA3-Personal
transition mode with both SAE and PSK enabled and PMF enabled for PSK
and required for SAE associations.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
Add a new QCA vendor specific feature capability indication for the
device to indicate the support of TWT.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
The current/default behavior of set blacklist BSSID QCA vendor command
is a mandate to the driver - do not consider this BSSID for connect/roam
till reset.
There are use cases where this need not be a mandate and thus could
provide the flexibility for the driver to consider this BSSID if there
are no better ones. Such use cases can use this new flag attribute to
only hint the blacklist of a BSSID to the driver.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
Do not start SAE authentication from scratch if a STA starts a new
attempt for the same group while we still have previously generated PWE
available. Instead, use the previously generated PWE as-is and skip
anti-clogging token exchange since the heavy processing is already
completed. This saves unnecessary processing on the AP side in case the
STA failed to complete authentication on the first attempt (e.g., due to
heavy SAE load on the AP causing a timeout) and makes it more likely for
a valid STA to be able to complete SAE authentication during a DoS
attack.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
Do not start SAE authentication from scratch when the AP requests
anti-clogging token to be used. Instead, use the previously generated
PWE as-is if the retry is for the same AP and the same group. This saves
unnecessary processing on the station side in case the AP is under heavy
SAE authentiation load.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
Add a 16-bit token index into the anti-clogging token. This can be used
to enforce only a single use of each issued anti-clogging token request.
The token value is now token-index |
last-30-octets-of(HMAC-SHA256(sae_token_key, STA-MAC-address |
token-index)), i.e., the first two octets of the SHA256 hash value are
replaced with the token-index and token-index itself is protected as
part of the HMAC context data.
Track the used 16-bit token index values and accept received tokens only
if they use an index value that has been requested, but has not yet been
used. This makes it a bit more difficult for an attacker to perform DoS
attacks against the heavy CPU operations needed for processing SAE
commit since the attacker cannot simply replay the same frame multiple
times and instead, needs to request each token separately.
While this does not add significant extra processing/CPU need for the
attacker, this can be helpful in combination with the queued processing
of SAE commit messages in enforcing more delay during flooding of SAE
commit messages since the new anti-clogging token values are not
returned before the new message goes through the processing queue.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
This allows better control of processing new SAE sessions so that other
operations can be given higher priority during bursts of SAE requests,
e.g., during a potential DoS attack. The receive commit messages are
queued (up to maximum of 15 entries) and processed from eloop callback.
If the queue has multiple pending entries, more wait time is used to go
through the each new entry to reduce heavy CPU load from SAE processing.
Enable anti-clogging token use also based on the pending commit message
queue and not only based on the already started sessions.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
Change the AP mode default for SAE to enable only the group 19 instead
of enabling all ECC groups that are supported by the used crypto library
and the SAE implementations. The main reason for this is to avoid
enabling groups that are not as strong as the mandatory-to-support group
19 (i.e., groups 25 and 26). In addition, this disables heavier groups
by default.
In addition, add a warning about MODP groups 1, 2, 5, 22, 23, and 24
based on "MUST NOT" or "SHOULD NOT" categorization in RFC 8247. All the
MODP groups were already disabled by default and would have needed
explicit configuration to be allowed.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
Pass the group order (if known/specified) to crypto_dh_derive_secret()
(and also to OpenSSL DH_generate_key() in case of Group 5) and verify
that the public key received from the peer meets 1 < pubkey < p and
pubkey^q == 1 mod p conditions.
While all these use cases were using only ephemeral DH keys, it is
better to use more explicit checks while deriving the shared secret to
avoid unexpected behavior.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
This extension of VLAN assignment code had a bug in one of the code
paths where vlan_id could have been left uninitialized. This could
result in SAE authentication getting rejected in cases where VLAN
assignment is not used if the uninitialized stack memory had nonzero
value.
Fixes: dbfa691df4 ("VLAN assignment based on used WPA/WPA2 passphrase/PSK")
Signed-off-by: Jouni Malinen <j@w1.fi>
Use unsigned 1 (1U) instead of signed (1) when doing left shift that
could potentially need to use all bits of the 32-bit unsigned variable.
radius_server.c:2254:14: runtime error: left shift of 1 by 31 places cannot be represented in type 'int'
Signed-off-by: Jouni Malinen <j@w1.fi>
Avoid an unnecessary unsigned integer overflow warning due to loop index
j-- use.
hostapd.c:661:10: runtime error: unsigned integer overflow: 0 - 1 cannot be represented in type 'unsigned int'
Signed-off-by: Jouni Malinen <j@w1.fi>
ie.wps_ie is an array, so there is no point in checking whether it is
NULL.
driver_atheros.c:1221:9: error: address of array 'ie.wps_ie' will
always evaluate to 'true' [-Werror,-Wpointer-bool-conversion]
Signed-off-by: Jouni Malinen <j@w1.fi>
(&mgmt->u.deauth.reason_code + 1) is not exactly clean and now that we
have the u8 variable[] member in the struct after this field, use that
directly to avoid clang compiler warning:
ctrl_iface_ap.c:454:18: error: taking address of packed member
'reason_code' of class or structure 'ieee80211_mgmt::(anonymous
union)::(anonymous)' may result in an unaligned pointer value
[-Werror,-Waddress-of-packed-member]
Signed-off-by: Jouni Malinen <j@w1.fi>
FST_MAX_LLT_MS definition depended on undefined behavior with unsigned
integer overflow. Avoid that and also optimize the
FST_LLT_{MS_TO_VAL,VAL_TO_MS} macros to handle larger values without
overflowing 32-bit unsigned integers.
fst_session.c:1274:52: runtime error: unsigned integer overflow: 4294967295 * 32 cannot be represented in type 'unsigned int'
Signed-off-by: Jouni Malinen <j@w1.fi>
Split the check and decrementation into separate steps to avoid an
unnecessary UBSan warning.
hostapd.c:1895:14: runtime error: unsigned integer overflow: 0 - 1 cannot be represented in type 'size_t' (aka 'unsigned long')
Signed-off-by: Jouni Malinen <j@w1.fi>
hapd->conf might be NULL in case initialized failed, so better be
prepared for that when debug printing interface name in the deinit path.
hostapd.c:312:54: runtime error: member access within null pointer of type 'struct hostapd_bss_config'
hostapd.c:351:29: runtime error: member access within null pointer of type 'struct hostapd_bss_config'
hostapd.c:2158:18: runtime error: member access within null pointer of type 'struct hostapd_bss_config'
Signed-off-by: Jouni Malinen <j@w1.fi>
Add a constraint on the base64 encoded buffer length to avoid an integer
overflow in the output length calculation.
common.c:1087:16: runtime error: unsigned integer overflow: 0 - 1 cannot be represented in type 'size_t' (aka 'unsigned long')
Signed-off-by: Jouni Malinen <j@w1.fi>
Split the if/while loop condition into two independent steps so that
in_size-- happens only in the case in_size is nonzero. This gets rid of
unnecessary UBSan warnings.
common.c:1087:16: runtime error: unsigned integer overflow: 0 - 1 cannot be represented in type 'size_t' (aka 'unsigned long')
common.c:1076:16: runtime error: unsigned integer overflow: 0 - 1 cannot be represented in type 'size_t' (aka 'unsigned long')
common.c:1119:16: runtime error: unsigned integer overflow: 0 - 1 cannot be represented in type 'size_t' (aka 'unsigned long')
Signed-off-by: Jouni Malinen <j@w1.fi>
This results in an UBSan warning that can be avoided easily.
os_unix.c:524:3: runtime error: null pointer passed as argument 2, which is declared to never be null
Signed-off-by: Jouni Malinen <j@w1.fi>
ext_supp_rates_len would be 0 here, so decrementing it by 2 will result
in unsigned integer overflow even if that result is not actually used
anywhere. Avoid that to get rid of the UBSan warning.
tdls.c:1597:27: runtime error: unsigned integer overflow: 0 - 2 cannot be represented in type 'unsigned long'
Signed-off-by: Jouni Malinen <j@w1.fi>
