This changes OpenSSL calls to explicitly clear the EC_POINT memory
allocations when freeing them. This adds an extra layer of security by
avoiding leaving potentially private keys into local memory after they
are not needed anymore. While some of these variables are not really
private (e.g., they are sent in clear anyway), the extra cost of
clearing them is not significant and it is simpler to just clear these
explicitly rather than review each possible code path to confirm where
this does not help.
Signed-off-by: Florent Daigniere <nextgens@freenetproject.org>
This changes OpenSSL calls to explicitly clear the bignum memory
allocations when freeing them. This adds an extra layer of security by
avoiding leaving potentially private keys into local memory after they
are not needed anymore. While some of these variables are not really
private (e.g., they are sent in clear anyway), the extra cost of
clearing them is not significant and it is simpler to just clear these
explicitly rather than review each possible code path to confirm where
this does not help.
Signed-off-by: Florent Daigniere <nextgens@freenetproject.org>
FreeRADIUS releases before 1.1.4 did not send MS-CHAP2-Success in
EAP-TTLS/MSCHAPv2. A wpa_supplicant workaround for that was added in
2005 and it has been enabled by default to avoid interoperability
issues. This could be disabled with all other EAP workarounds
(eap_workaround=0). However, that will disable some workarounds that are
still needed with number of authentication servers.
Old FreeRADIUS versions should not be in use anymore, so it makes sense
to remove this EAP-TTLS/MSCHAPv2 workaround completely to get more
complete validation of server behavior. This allows MSCHAPv2 to verify
that the server knows the password instead of relying only on the TLS
certificate validation.
Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>
When driver interface is destroyed (via wpa_driver_nl80211_deinit) the
"preq" nl socket isn't always deleted but the callback struct associated
is. After the interface is destroyed we may still get event on the
socket but as the callback has been freed this will cause wpa_supplicant
to crash.
This patch ensures that the "preq" socket is destroyed when destroying
the interface.
Signed-off-by: Cedric IZOARD <cedricx.izoard@intel.com>
This allows external programs to use vendor specific information from
P2P peers without wpa_supplicant having to be able to parse and
understand all such vendor specific elements.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
This adds following new control interface commands to allow arbitrary
vendor elements to be added into number of frames:
VENDOR_ELEM_ADD <frame id> <hexdump of elem(s)>
VENDOR_ELEM_GET <frame id>
VENDOR_ELEM_REMOVE <frame id> <hexdump of elem(s)>
VENDOR_ELEM_REMOVE <frame id> *
The following frames are supported in this commit (additional frames can
be added in the future):
0 = Probe Request frame in P2P device discovery
1 = Probe Response frame from P2P Device role
2 = Probe Response frame from P2P GO
3 = Beacon frame from P2P GO
4 = PD Req
5 = PD Resp
6 = GO Neg Req
7 = GO Neg Resp
8 = GO Neg Conf
9 = Invitation Request
10 = Invitation Response
11 = P2P Association Request
12 = P2P Association Response
One or more vendor element can be added/removed with the commands. The
hexdump of the element(s) needs to contain the full element (id, len,
payload) and the buffer needs to pass IE parsing requirements to be
accepted.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
set_dfs_state() return value is not currently checked anywhere, so
remove the dead assignment to avoid static analyzer complaints.
Signed-off-by: Jouni Malinen <j@w1.fi>
Use an explicit memset call to clear any configuration parameter and
dynamic data that contains private information like keys or identity.
This brings in an additional layer of protection by reducing the length
of time this type of private data is kept in memory.
Signed-off-by: Jouni Malinen <j@w1.fi>
Use an explicit memset call to clear any hostapd configuration parameter
that contains private information like keys or identity. This brings in
an additional layer of protection by reducing the length of time this
type of private data is kept in memory.
Signed-off-by: Jouni Malinen <j@w1.fi>
Use an explicit memset call to clear any hs20-osu-client configuration
parameter that contains private information like keys or identity. This
brings in an additional layer of protection by reducing the length of
time this type of private data is kept in memory.
Signed-off-by: Jouni Malinen <j@w1.fi>
Reduce the amount of time keying material (MSK, EMSK, temporary private
data) remains in memory in EAP methods. This provides additional
protection should there be any issues that could expose process memory
to external observers.
Signed-off-by: Jouni Malinen <j@w1.fi>
Reduce the amount of time keying material (MSK, EMSK, temporary private
data) remains in memory in EAP methods. This provides additional
protection should there be any issues that could expose process memory
to external observers.
Signed-off-by: Jouni Malinen <j@w1.fi>
Use an explicit memset call to clear any wpa_supplicant configuration
parameter that contains private information like keys or identity. This
brings in an additional layer of protection by reducing the length of
time this type of private data is kept in memory.
Signed-off-by: Jouni Malinen <j@w1.fi>
The pos pointer is not used after this now nor in future plans, so no
need to increment the value. This remove a static analyzer warning about
dead increment.
Signed-off-by: Jouni Malinen <j@w1.fi>
Instead of using the pre-calculated length of the buffer, determine the
length of used data based on the pos pointer. This avoids a static
analyzer warning about dead increment.
Signed-off-by: Jouni Malinen <j@w1.fi>
This makes the implementation less likely to provide useful timing
information to potential attackers from comparisons of information
received from a remote device and private material known only by the
authorized devices.
Signed-off-by: Jouni Malinen <j@w1.fi>
This makes the implementation less likely to provide useful timing
information to potential attackers from comparisons of information
received from a remote device and private material known only by the
authorized devices.
Signed-off-by: Jouni Malinen <j@w1.fi>
This makes the implementation less likely to provide useful timing
information to potential attackers from comparisons of information
received from a remote device and private material known only by the
authorized devices.
Signed-off-by: Jouni Malinen <j@w1.fi>
This makes the implementation less likely to provide useful timing
information to potential attackers from comparisons of information
received from a remote device and private material known only by the
authorized devices.
Signed-off-by: Jouni Malinen <j@w1.fi>
This makes the implementation less likely to provide useful timing
information to potential attackers from comparisons of information
received from a remote device and private material known only by the
authorized devices.
Signed-off-by: Jouni Malinen <j@w1.fi>
This makes the implementation less likely to provide useful timing
information to potential attackers from comparisons of information
received from a remote device and private material known only by the
authorized devices.
Signed-off-by: Jouni Malinen <j@w1.fi>
This makes the implementation less likely to provide useful timing
information to potential attackers from comparisons of information
received from a remote device and private material known only by the
authorized devices.
Signed-off-by: Jouni Malinen <j@w1.fi>
This makes the implementation less likely to provide useful timing
information to potential attackers from comparisons of information
received from a remote device and private material known only by the
authorized devices.
Signed-off-by: Jouni Malinen <j@w1.fi>
This makes the implementation less likely to provide useful timing
information to potential attackers from comparisons of information
received from a remote device and private material known only by the
authorized devices.
Signed-off-by: Jouni Malinen <j@w1.fi>
This makes the implementation less likely to provide useful timing
information to potential attackers from comparisons of information
received from a remote device and private material known only by the
authorized devices.
Signed-off-by: Jouni Malinen <j@w1.fi>
This makes the implementation less likely to provide useful timing
information to potential attackers from comparisons of information
received from a remote device and private material known only by the
authorized devices.
Signed-off-by: Jouni Malinen <j@w1.fi>
This makes the implementation less likely to provide useful timing
information to potential attackers from comparisons of information
received from a remote device and private material known only by the
authorized devices.
Signed-off-by: Jouni Malinen <j@w1.fi>
This makes the implementation less likely to provide useful timing
information to potential attackers from comparisons of information
received from a remote device and private material known only by the
authorized devices.
Signed-off-by: Jouni Malinen <j@w1.fi>
This makes the implementation less likely to provide useful timing
information to potential attackers from comparisons of information
received from a remote device and private material known only by the
authorized devices.
Signed-off-by: Jouni Malinen <j@w1.fi>
This makes the implementation less likely to provide useful timing
information to potential attackers from comparisons of information
received from a remote device and private material known only by the
authorized devices.
Signed-off-by: Jouni Malinen <j@w1.fi>
This makes the implementation less likely to provide useful timing
information to potential attackers from comparisons of information
received from a remote device and private material known only by the
authorized devices.
Signed-off-by: Jouni Malinen <j@w1.fi>
This makes the implementation less likely to provide useful timing
information to potential attackers from comparisons of information
received from a remote device and private material known only by the
authorized devices.
Signed-off-by: Jouni Malinen <j@w1.fi>
This makes the implementation less likely to provide useful timing
information to potential attackers from comparisons of information
received from a remote device and private material known only by the
authorized devices.
Signed-off-by: Jouni Malinen <j@w1.fi>
This makes the implementation less likely to provide useful timing
information to potential attackers from comparisons of information
received from a remote device and private material known only by the
authorized devices.
Signed-off-by: Jouni Malinen <j@w1.fi>
This makes the implementation less likely to provide useful timing
information to potential attackers from comparisons of information
received from a remote device and private material known only by the
authorized devices.
Signed-off-by: Jouni Malinen <j@w1.fi>
This makes the implementation less likely to provide useful timing
information to potential attackers from comparisons of information
received from a remote device and private material known only by the
authorized devices.
Signed-off-by: Jouni Malinen <j@w1.fi>
This makes the implementation less likely to provide useful timing
information to potential attackers from comparisons of information
received from a remote device and private material known only by the
authorized devices.
Signed-off-by: Jouni Malinen <j@w1.fi>
This makes the implementation less likely to provide useful timing
information to potential attackers from comparisons of information
received from a remote device and private material known only by the
authorized devices.
Signed-off-by: Jouni Malinen <j@w1.fi>
This makes the implementation less likely to provide useful timing
information to potential attackers from comparisons of information
received from a remote device and private material known only by the
authorized devices.
Signed-off-by: Jouni Malinen <j@w1.fi>
This makes the implementation less likely to provide useful timing
information to potential attackers from comparisons of information
received from a remote device and private material known only by the
authorized devices.
Signed-off-by: Jouni Malinen <j@w1.fi>
This makes the implementation less likely to provide useful timing
information to potential attackers from comparisons of information
received from a remote device and private material known only by the
authorized devices.
Signed-off-by: Jouni Malinen <j@w1.fi>
This function is meant for comparing passwords or hash values where
difference in execution time could provide external observer information
about the location of the difference in the memory buffers. The return
value does not behave like os_memcmp(), i.e., os_memcmp_const() cannot
be used to sort items into a defined order. Unlike os_memcmp(),
execution time of os_memcmp_const() does not depend on the contents of
the compared memory buffers, but only on the total compared length.
Signed-off-by: Jouni Malinen <j@w1.fi>
Instead of using implicit limit based on 16-bit unsigned integer having
a maximum value of 65535, limit the maximum length of a fragmented
EAP-pwd message explicitly to 15000 bytes. None of the supported groups
use longer messages, so it is fine to reject any longer message without
even trying to reassemble it. This will hopefully also help in reducing
false warnings from static analyzers (CID 68124).
Signed-off-by: Jouni Malinen <j@w1.fi>
This makes it easier for static analyzers to figure out which code paths
are possible within eap_sim_msg_finish() for EAP-SIM. This will
hopefully avoid some false warnings (CID 68110, CID 68113, CID 68114).
Signed-off-by: Jouni Malinen <j@w1.fi>
This extends the earlier commit e6270129f6
('Clean up EAPOL-Key Key Data processing') design to be used with
PeerKey EAPOL-key processing as well. This avoids false warnings from
static analyzer (CID 62860, CID 62861, CID 62862).
Signed-off-by: Jouni Malinen <j@w1.fi>
This will be useful in wpa_supplicant part to signal if a peer got its
group changed.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
GroupMember is unusable in itself and all the necessary informations are
stored in Peer objects, thus replace the use of GroupMember by Peer.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
This will be useful in wpa_supplicant to match group's SSIDs against a
specific one.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
This will be useful for finding the interface related to this group
after formation based on the group SSID.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
Use a helper function to avoid multiple copies of the same long list of
argument parameters to wpa_sm_tdls_peer_addset() from the peer entry.
Signed-off-by: Jouni Malinen <j@w1.fi>
Update the peer STA with full info sending TDLS Setup Response/Confirm
frames instead of after the full setup exchange. This makes it easier
for some drivers to properly negotiate QoS and HT information on the
direct link.
Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
There is no need to keep the peer entry in memory after the link has
been removed.
Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
Tested-by: Ilan Peer <ilan.peer@intel.com>
It's worth giving a try to fallback to re-starting BSSes at least once
hoping it works out instead of just leaving BSSes disabled.
Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Currently hostapd data structures aren't ready for multi-channel BSSes,
so make DFS work now at least with single-channel multi-BSS channel
switching.
Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Fix a bug where changing the mode of the interface to IBSS
fails because the interface is sitting on a channel where IBSS is
disallowed because of a previous association.
Signed-off-by: Christopher Wiley <wiley@chromium.org>
In preparation for another wrinkle around switching into IBSS mode,
refactor existing mode switch logic for simplicity at the expense
of some brevity.
Signed-off-by: Christopher Wiley <wiley@chromium.org>
Previously, eight character random passphrase was generated
automatically for P2P GO. The new p2p_passphrase_len parameter can be
used to increase this length to generate a stronger passphrase for cases
where practicality of manual configuration of legacy devices is not a
concern.
Signed-off-by: Jouni Malinen <j@w1.fi>
Hitting maximum number of AT_KDF attributes could result in an infinite
loop due to the attribute parser not incrementing the current position
properly when skipping the extra KDF.
Signed-off-by: Jouni Malinen <j@w1.fi>
Use a local variable and size_t in length comparison to make this easier
for static analyzers to understand. In addition, set the return list and
list_len values at the end of the function, i.e., only in success case.
These do not change the actual behavior of the only caller for this
function, but clarifies what the helper function is doing.
Signed-off-by: Jouni Malinen <j@w1.fi>
Use size_t instead of int for storing and comparing the TLV length
against the remaining buffer length to make this easier for static
analyzers to understand.
Signed-off-by: Jouni Malinen <j@w1.fi>
This was added by commit 8a45811638
('hostapd: Add Operating Mode Notification support'), but the validation
steps cannot be true either for the channel width (which is a two-bit
subfield that cannot encode more than the list four values) or Rx NSS
(which cannot encode a value larger 7). Furthermore, the VHT_CHANWIDTH_*
defines do not match the definition of the Channel Width subfield
values.
Since this check cannot ever match, it is better to remove it to make
the code easier to understand and to avoid getting complaints about dead
code from static analyzers.
Signed-off-by: Jouni Malinen <j@w1.fi>
Some APs (Cisco) may tack on a weird IE to the end of a TDLS Discovery
Request packet. This needn't fail the response, since the required IEs
are verified separately.
Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
Some APs (Cisco) may tack on a weird IE to the end of the TDLS confirm
packet, which can fail negotiation. As an interoperability workaround,
ignore IE parser failures and reject the frame only if any of the
mandatory IEs are not included.
Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
Commit 342bce63cd introduced a possibility
of a NULL pointer dereference on the error path if a new peer entry
fails to get added (i.e., memory allocation failure). Fix that by
skipping the wpa_tdls_peer_free() call if necessary.
Signed-off-by: Jouni Malinen <j@w1.fi>
Commit b36935be1a ('nl80211: Fix EAPOL
frames not being delivered') and commit
147848ec4d ('nl80211: Do not add all
virtual interfaces to drv->if_indices') were not fully in sync and it
was possible for some non-hostapd use cases to end up adding undesired
ifindexes into the list of interfaces from which events and EAPOL frames
are processed on the parent interface. This could result, e.g., in P2P
Device management interface on getting unexpected events, including
RTM_NEWLINK event that could end up getting interpreted as an
indication of the interface being down and unavailable.
Make both add_ifidx() calls use the same criteria for adding interfaces
to the local list. This is not really a complete solution, but it is
good enough for now to fix the most visible side effects of this issue.
Signed-off-by: Jithu Jance <jithu@broadcom.com>
The driver might not be able to add the TDLS STA. Fail if this happens.
Also fix the error path to always reset the TDLS peer data.
Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
If a link is unreachable, the specification mandates we should send a
teardown packet via the AP with a specific teardown reason. Force this
by first disabling the link and only then sending the teardown packet
for the LOW_ACK event.
Rename the TDLS LOW_ACK event handler to better reflect its purpose.
Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
Earlier commit related to MAC address based access control list
offloaded to the driver was not sending ACL configuration to the driver
if the MAC address list was empty. Remove this check as empty access
control list is a valid use case and sending ACL parameters should not
be dependent on whether the list is empty.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Performing a P2P Device flow such as p2p_listen or
p2p_find, can degrade the performance of an active interface
connection, if the listen frequency is different than the
frequency used by that interface.
To reduce the effect of P2P Device flows on other interfaces,
try changing the listen channel of the P2P Device to match the
operating channel of one of the other active interfaces. This change
will be possible only in case that the listen channel is not forced
externally, and will be delayed to a point where the P2P Device
state machine is idle.
The optimization can be configured in the configuration file and
is disabled by default.
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
In p2p_get_pref_freq, if the channels argument is NULL, select a
preferred channel that is also one of the P2P Device configured
channels.
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Use a single location in wpa_sm_rx_eapol() for preparing the pointer to
the Key Data field and to its validated length instead of fetching that
information in number of processing functions separately.
Signed-off-by: Jouni Malinen <j@w1.fi>
Re-order wpa_sm_rx_eapol() to first go through all EAPOL (802.1X) header
validation steps using the original message buffer and re-allocate and
copy the frame only if this is a valid EAPOL frame that contains an
EAPOL-Key. This makes the implementation easier to understand and saves
unnecessary memory allocations and copying should other types of EAPOL
frames get here.
Signed-off-by: Jouni Malinen <j@w1.fi>
These error messages had an incorrect frame name (likely copy-pasted
from the commit message handler) and couple of typos.
Signed-off-by: Jouni Malinen <j@w1.fi>
While this call cannot really fail, check the return value to be more
consistent with all the other wps_build_wfa_ext() calls.
Signed-off-by: Jouni Malinen <j@w1.fi>
While the hash functions would be very unlikely to fail in practice,
they do have option of returning an error. Check that return value more
consistently.
Signed-off-by: Jouni Malinen <j@w1.fi>
The additional eight octet field was removed from keydatalen without
proper validation of the Key Data Length field. It would have been
possible for an invalid EAPOL-Key frame to be processed in a way that
ends up reading beyond the buffer. In theory, this could have also
resulted in writing beyond the EAPOL-Key frame buffer, but that is
unlikely to be feasible due to the AES key wrap validation step on
arbitrary memory contents.
Signed-off-by: Jouni Malinen <j@w1.fi>
Since there is a limit on the EAP exchange due to maximum number of
roundtrips, there is no point in allowing excessively large buffers to
be allocated based on what the peer device claims the total message to
be. Instead, reject the message if it would not be possible to receive
it in full anyway.
Signed-off-by: Jouni Malinen <j@w1.fi>
The Action code field is in a fixed location, so the IEEE80211_HDRLEN
can be used here to clean up bounds checking to avoid false reports from
static analyzer.
Signed-off-by: Jouni Malinen <j@w1.fi>
There seemed to be an off-by-one error in the validation of GAS request
frames. If a Public Action frame without the Action code field would
have reached this function, the length could have been passed as
(size_t) -1 which would likely have resulted in a crash due to reading
beyond the buffer. However, it looks like such frame would not be
delivered to hostapd at least with mac80211-based drivers. Anyway, this
function better be more careful with length validation should some other
driver end up reporting invalid Action frames.
In addition, the Action code field is in a fixed location, so the
IEEE80211_HDRLEN can be used here to clean up bounds checking to avoid
false reports from static analyzer.
Signed-off-by: Jouni Malinen <j@w1.fi>
The Action code field is in a fixed location, so the IEEE80211_HDRLEN
can be used here to clean up bounds checking to avoid false reports from
static analyzer.
Signed-off-by: Jouni Malinen <j@w1.fi>
The implementation here was doing what it was supposed to, but the code
was indented in a way that made it quite confusing in the context of a
single line if statement body.
Signed-off-by: Jouni Malinen <j@w1.fi>
In tncc_read_config(), the memory allocted for the config
did not get freed if an error occured.
Signed-off-by: Philippe De Swert <philippe.deswert@jollamobile.com>
The driver may reject offchannel TX operation if the requested wait time
is longer than what the driver indicates as the maximum
remain-on-channel time. Two of the P2P action frame cases used long
enough wait times (1000 ms for DevDisc and 5000 ms for SD) that could go
beyond the limit with some drivers. Fix these to limit the maximum wait
to what the driver indicates as supported.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Extend the set of supported cipher suites to include CCMP-256, GCMP,
GCMP-256, CMAC-256, GMAC, and GMAC-256 when ATH_GCM_SUPPORT=y is set in
the build configuration.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
It does not look like there is going to be any additional use for this
old build option that could be used to build the EAP-IKEv2 peer
implementation in a way that interoperates with the eap-ikev2.ccns.pl
project. Remove the workarounds that matches incorrect implementation in
that project to clean up implementation.
Signed-off-by: Jouni Malinen <j@w1.fi>
While it does not look like that eapol_sm_get_key() would ever be called
with sm == NULL, the current implementation is inconsistent on whether
that is allowed or not. Check sm != NULL consistently to avoid warnings
from static analyzers.
Signed-off-by: Jouni Malinen <j@w1.fi>
The following kde.rsn_ie_len != peer->rsnie_i_len was already taking
care of enforcing the length to be within the target buffer length.
Anyway, this explicit check makes this clearer and matches the design in
TPK M1 processing.
Signed-off-by: Jouni Malinen <j@w1.fi>
In theory, gmtime() could return NULL if the year value would not fit
into an integer. However, that cannot really happen with the current
time() value in practice. Anyway, clean up static analyzer reports by
checking for this corner case.
Signed-off-by: Jouni Malinen <j@w1.fi>
Must check that UDN was present before trying to parse it. Avoid a NULL
pointer dereference by checking the result before using os_strstr() when
parsing device description from an AP.
Signed-off-by: Jouni Malinen <j@w1.fi>
prev cannot be NULL here in the hostapd_eid_country_add() call since
prev is set whenever start becomes non-NULL. That seems to be a bit too
difficult for some static analyzers, so check the prev pointer
explicitly to avoid false warnings.
Signed-off-by: Jouni Malinen <j@w1.fi>
This fixes an issue where a driver using the deprecated set_ieee8021x()
callback did not include rsn_pairwise bits in the driver configuration
even if mixed WPA+WPA2 configuration was used. This could result, e.g.,
in CCMP not being enabled properly when wpa_pairwise=TKIP and
rsn_pairwise=CCMP was used in the configuration. Fix this by using
bitwise OR of the wpa_pairwise and rsn_pairwise values to allow the
driver to enable all pairwise ciphers.
In addition, make the newer set_ap() driver_ops use the same bitwise OR
design instead of picking between rsn_pairwise and wpa_pairwise. This
makes the code paths consistent and can also fix issues with mixed mode
configuration with set_ap().
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
If the peer provides a username with large part of it being non-ASCII
characters, the previously used buffers may not have been long enough to
include the full string in debug logs and database search due to forced
truncation of the string by printf_encode(). Avoid this by increasing
the buffer sizes to fit in the maximum result.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
The off-by-one error in printf_encode() bounds checking could have
allowed buffer overflow with 0x00 being written to the memory position
following the last octet of the target buffer. Since this output is used
as \0-terminated string, the following operation would likely read past
the buffer as well. Either of these operations can result in the process
dying either due to buffer overflow protection or by a read from
unallowed address.
This has been seen to cause wpa_supplicant crash on OpenBSD when control
interface client attaches (debug print shows the client socket address).
Similarly, it may be possible to trigger the issue in RADIUS/EAP server
implementation within hostapd with a suitable constructed user name.
Signed-off-by: Stuart Henderson <sthen@openbsd.org>
If PMF was enabled, the validation step for EAPOL-Key descriptor version
ended up rejecting the message if GCMP had been negotiated as the
pairwise cipher. Fix this by making the GCMP check skipped similarly to
the CCMP case if a SHA256-based AKM is used.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Move to PTKINITDONE state and mark PTK valid after successful completion
of FT protocol. This allows the AP/Authenticator to start GTK rekeying
when FT protocol is used. Previously, the station using FT protocol did
not get the new GTK which would break delivery of group addressed
frames.
Signed-off-by: Jouni Malinen <j@w1.fi>
I got the below prints on a particular Android platform:
I/wpa_supplicant( 2637): nl80211: send_and_recv->nl_recvmsgs failed: 20
I/wpa_supplicant( 2637): nl80211: send_and_recv->nl_recvmsgs failed: 20
In JellyBean libnl_2 code, I see that the nl_recvmsgs returns postive values
too. In some cases, nl_recvmgs return the output of nl_recv function. nl_recv
function can return Number of bytes read, 0 or a negative error code.
Looks like this positive return value for nl_recvmsgs may be specific to
Android. While this is not how the API is supposed to work, this does no
harm with upstream libnl which returns only 0 or -1 from the function.
Signed-off-by: Jithu Jance <jithu@broadcom.com>
The dev_found() callback from NFC connection handover message processing
ended up using the p2p_dev_addr pointer that points to the parsed
message. However, that parsed data was freed just before the call. Fix
this by reordering the calls.
Signed-off-by: Jouni Malinen <j@w1.fi>
If the randomly generated bignum does not meet the validation steps, the
iteration loop in sae_get_rand() did not free the data properly. Fix the
memory leak by freeing the temporary bignum before starting the next
attempt at generating the value.
Signed-off-by: Jouni Malinen <j@w1.fi>
Couple of code paths in hostapd.c could have left hapd->drv_priv
pointing to memory that was freed in driver_nl80211.c when a secondary
BSS interface is removed. This could result in use of freed memory and
segfault when the next driver operation (likely during interface
deinit/removal). Fix this by clearing hapd->drv_priv when there is
reason to believe that the old value is not valid within the driver
wrapper anymore.
Signed-off-by: Jouni Malinen <j@w1.fi>
These three calls were used already in three different paths. Use a
helper function to avoid adding even more copies of this.
Signed-off-by: Jouni Malinen <j@w1.fi>
If for some reason interface setup fails mid-way when setting up
multi-BSS AP it was possible to get segmentation fault because driver
was not properly cleaned up.
One possible trigger, when using nl80211 driver, was udev renaming an
interface created by hostapd causing, e.g., linux_set_iface_flags() to
fail.
Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
This variable is updated when calling hostapd_if_add(), so it makes
sense to do the same thing when calling hostapd_if_remove().
Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Performing, e.g. `wpa_cli -p /var/run/hostapd raw DISABLE` twice led to
hostapd segmentation fault if multiple BSSes were configured. Fix this
by checking if there is anything to disable at all before trying.
Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Make sure to not remove interfaces that were not created by
hostapd/wpa_supplicant. This was already done on number of the error
paths, but not all.
Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
It is possible for the connect() call to fail (e.g., due to unreachable
network based on local routing table), so the current auth/acct_sock may
be left to -1. Use that as an addition trigger to allow server failover
operation to be performed more quickly if it is known that the
retransmission attempt will not succeed anyway.
Signed-off-by: Jouni Malinen <j@w1.fi>
The re-open socket to the current RADIUS server code path did not work
in the expected way here. The pending authentication messages do not
need to be flushed in that case and neither should the retransmission
parameters be cleared. Fix this by performing these operations only if
the server did actually change as a part of a failover operation.
Signed-off-by: Jouni Malinen <j@w1.fi>
The current RADIUS server pointer was updated after each SET command
which broke parsing of multiple RADIUS servers over the control
interface. Fix this by doing the final RADIUS server pointer updates
only once the full configuration is available.
Signed-off-by: Jouni Malinen <j@w1.fi>
Both IPv4 and IPv6 sockets were not closed consistently in the paths
that tried to change RADIUS servers. This could result in leaking
sockets and leaving behind registered eloop events to freed memory on
interface removal.
Signed-off-by: Jouni Malinen <j@w1.fi>
While iterating through RADIUS messages in radius_client_timer(), one
message entry may get flushed by "radius_client_retransmit -->
radius_client_handle_send_error --> radius_client_init_auth -->
radius_change_server --> radius_client_flush". This could result in
freed memory being accessed afterwards.
Signed-off-by: Jerry Yang <xyang@sonicwall.com>
This is one more possible send() error that should trigger RADIUS server
change if multiple servers are configured.
Signed-off-by: Jouni Malinen <j@w1.fi>
It is possible for the RADIUS authentication/accounting socket to not be
open even if partial RADIUS server configuration has been done through
the control interface SET commands. Previously, this resulted in send()
attempt using fd=-1 which fails with bad file descriptor. Clean this up
by logging this as a missing configuration instead of trying to send the
message when that is known to fail.
Signed-off-by: Jouni Malinen <j@w1.fi>
This makes invitation process more consistent with GO Negotiation as far
as the debug log entries are concerned and the resulting log is more
helpful for understanding channel selection.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Instead of using X509_print_fp() to print directly to stdout, print the
certificate dump to a memory BIO and use wpa_printf() to get this into
the debug log. This allows redirection of debug log to work better and
avoids undesired stdout prints when debugging is not enabled.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
This configuration parameter was not used at all in the RADIUS server
implementation and instead, hard coded 0 was sent.
Signed-off-by: Jouni Malinen <j@w1.fi>
Commit 04eff7d5ba or something around that
timeframe may have caused a regression on how drv->if_indices gets used
with wpa_supplicant. Most (curretly likely all) wpa_supplicant virtual
interface use cases should not actually use this. This could result in
issues with P2P group interfaces delivering events to incorrect
interface (parent rather than the group interface). The previous commit
removed some of the issues, but more complete fix is to undo some of
those merged hostapd/wpa_supplicant operations.
Filter add_ifidx() uses based on hostapd vs. wpa_supplicant and iftype
to get closer to the earlier wpa_supplicant behavior for the driver
events from virtual interfaces.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
It is possible for a virtual interface to be added and removed by
different parent interfaces. This can happen, e.g., with P2P group
interfaces if the P2P parent interface does not happen to be the first
entry in the wpa_supplicant global interface list. That first entry is
used to remove the group interface while the addition would have
happened with the dedicated P2P management interface.
This can result in the interface that added a new virtual interface
getting stuck with an obsolete ifindex value in the drv->if_indeces list
and as such, deliver some extra events to incorrect destination wpa_s
instance. In particular, this can result in INTERFACE_DISABLED event
from deletion of a P2P group interface getting delivered incorrectly to
the parent wpa_s instance which would disable that interface even though
the interface remains in enabled state.
Fix this by clearing the removed interface from all if_indeces lists
instead of just the one that was used to delete the interface. This is
the simplest approach since the ifindex is unique and there is no need
to track which interface added the new virtual interface to always hit
the same one when removing the interface.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Add regulatory classes for the 60GHz band.
Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: Boris Sorochkin <qca_bsoroc@qca.qualcomm.com>
Instead of silently dropping the response that requires fragmentation,
send an error response to the station to make it aware that no full
response will be available.
Signed-off-by: Jouni Malinen <j@w1.fi>
If p2p_listen is called while previous listen command's
remain_on_channel event is pending, the p2p_listen would fail
and it used to clear pending_listen_freq. Now when the remain-
on-channel event comes from the driver, the pending_listen_freq
doesn't match and gets ignored. This was leading to a case
where listen state was getting stuck (in case of WAIT_PEER_CONNECT
state).
Signed-off-by: Jithu Jance <jithu@broadcom.com>
Previously, the NL80211_ATTR_AKM_SUITES was skipped if either of these
SHA256-based AKMs was negotiated.
Signed-off-by: Jithu Jance <jithu@broadcom.com>
This is similar to the existing functionality that parsed ASN.1-encoded
RSA public key by generating a similar public key instance from already
parsed n and e parameters.
Signed-off-by: Jouni Malinen <j@w1.fi>
Follow the PKCS #1 v1.5, 8.1 constraint of at least eight octets long PS
for the case where the internal TLS implementation decrypts PKCS #1
formatted data. Similar limit was already in place for signature
validation, but not for this decryption routine.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Based on PKCS #1, v1.5, 10.1.3, the block type shall be 01 for a
signature. This avoids a potential attack vector for internal TLS/X.509
implementation.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Verify that there is no extra data after the hash field. This is needed
to avoid potential attacks using additional data to construct a value
that passes the RSA operation and allows the hash value to be forged.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Previously, hostapd had to be started with at least one of the
configuration files enabling TNC for TNC to be usable. Change this to
allow TNC to be enabled when the first interface with TNC enabled gets
added during runtime.
Signed-off-by: Jouni Malinen <j@w1.fi>
This is for enabling easier testing of TNCS/TNCC functionality as part
of the test scripts without having to use the fixed /etc/tnc_config
location that could be used by the main system and would require changes
within /etc.
Signed-off-by: Jouni Malinen <j@w1.fi>
This patch adds epoll option for the eloop implementation. This can be
selected with the CONFIG_ELOOP_EPOLL=y build option.
[merit]
See Table1.
Table1. comparison table
+--------+--------+-----------+------------+-------------+
| | add fd | remove fd | prepare fd | dispatch fd |
+--------+--------+-----------+------------+-------------+
| select | O(1) | O(1) | O(N) | O(N) |
+--------+--------+-----------+------------+-------------+
| poll | O(1) | O(1) | O(N) | O(N) |
+--------+--------+-----------+------------+-------------+
| epoll | O(1) | O(1) | 0 | O(M) |
+--------+--------+-----------+------------+-------------+
"add fd" is addition of fd by eloop_sock_table_add_sock().
"remove fd" is removal of fd by eloop_sock_table_remove_sock().
"prepare fd" is preparation of fds before wait in eloop_run().
"dispatch fd" is dispatchment of fds by eloop_sock_table_dispatch().
"N" is all watching fds.
"M" is fds which could be dispatched after waiting.
As shown in Table1, epoll option has better performance on "prepare fd" column.
Because select/poll option requires setting fds before every select()/poll().
But epoll_wait() doesn't need it.
And epoll option has also better performance on "dispatch fd" column.
Because select/poll option needs to check all registered fds to find out
dispatchable fds. But epoll option doesn't require checking all registered fds.
Because epoll_wait() returns dispatchable fd set.
So epoll option is effective for GO/AP functionality.
[demerit]
The epoll option requires additional heap memory. In case of P2P GO, it is
about 8K bytes.
Signed-off-by: Masashi Honma <masashi.honma@gmail.com>
p2p_get_pref_freq() went through the full list only if the channels
arguments was provided. If no channel list contraint was in place, the
first pref_chan item was picked regardless of whether it is valid
channel and as such, a later valid entry could have been ignored. Allow
this to loop through all the entries until a valid channel is found or
the end of the pref_chan list is reached. As an extra bonus, this
simplifies the p2p_get_pref_freq() implementation quite a bit.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Before starting a 20/40 MHz BSS on the 2.4 GHz band, a 40-MHz-capable HT
AP is required by the rules defined in IEEE Std 802.11-2012 10.15.5 to
examine the channels of the current operational regulatory domain to
determine whether the operation of a 20/40 MHz BSS might unfairly
interfere with the operation of existing 20 MHz BSSs. The AP (or some of
its associated HT STAs) is required to scan all of the channels of the
current regulatory domain in order to ascertain the operating channels
of any existing 20 MHz BSSs and 20/40 MHz BSSs. (IEEE 802.11-2012 S.5.2
Establishing a 20/40 MHz BSS).
Add the check for an overlapping 20 MHz BSS to the initial AP scan for
the P == OT_i case in 10.15.3.2.
Signed-off-by: Rajkumar Manoharan <rmanohar@qti.qualcomm.com>
scard_gsm_auth() used SIM_CMD_GET_RESPONSE for both SIM and USIM. Convert
the command into USIM_CMD_GET_RESPONSE for USIM.
Since commit eb32460029 ("Fix switching from EAP-SIM to EAP-AKA/AKA'")
EAP-SIM is using the USIM if available. This triggers a probably ancient
bug in scard_gsm_auth(), which results in sending the wrong get response
command to the USIM. Thus, EAP-SIM stopped to work after this change on
USIMs that expect the proper command.
Signed-off-by: Simon Baatz <gmbnomis@gmail.com>
If WPS isn't enabled, hostapd_cli returns 'OK' even though WPS doesn't
get activated because WPS context is not valid:
$ hostapd_cli wps_pbc
Selected interface 'wlan0'
OK
$ hostapd_cli wps_cancel
Selected interface 'wlan0'
OK
Fix this by returning appropriate error when WPS fails to activate:
$ hostapd_cli wps_pbc
Selected interface 'wlan0'
FAIL
$ hostapd_cli wps_cancel
Selected interface 'wlan0'
FAIL
Signed-off-by: Petar Koretic <petar.koretic@sartura.hr>
CC: Luka Perkov <luka.perkov@sartura.hr>
Peer should handle a GO Negotiation exchange correctly when the
responding device does not have WSC credentials available at the
time of receiving the GO Negotiation Request. WSC Credentials
(e.g., Pushbutton) can be entered within the 120 second timeout.
Presently, if concurrent session is not active, the peer would wait for
GO Negotiation Request frame from the other device for approximately one
minute due to the earlier optimization change in commit
a2d6365760. To meet the two minute
requirement, replace this design based on number of iterations with a
more appropriate wait for the required number of seconds.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Extend the previous commit 0f1034e388 to
skip extended listen also based on ongoing provision discovery operation
(which does not show up as a separate P2P module state and as such, was
not coveraged by the previous commit).
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
bss->freq was not updated for IBSS, so whatever old value was stored
from a previous AP mode operation could end up having been used as the
channel when trying to send Authentication frames in an RSN IBSS. This
resulted in the frame not sent (cfg80211 rejects it) and potentially not
being able to re-establish connection due to 4-way handshake failing
with replay counter mismatches. Fix this by learning the operating
channel of the IBSS both when join event is received and when a
management frame is being transmitted since the IBSS may have changed
channels due to merges.
Signed-off-by: Jouni Malinen <j@w1.fi>
RFC 5106 is not exactly clear on the requirements for the "no data"
packet that is used to acknowledge a fragmented message. Allow it to be
processed without the integrity checksum data field since it is possible
to interpret the RFC as this not being included. This fixes reassembly
of fragmented frames after keys have been derived.
Signed-off-by: Jouni Malinen <j@w1.fi>
If invalid group was negotiated, compute_password_element() left some of
the data->grp pointer uninitialized and this could result in
segmentation fault when deinitializing the EAP method. Fix this by
explicitly clearing all the pointer with eap_zalloc(). In addition,
speed up EAP failure reporting in this type of error case by indicating
that the EAP method execution cannot continue anymore on the peer side
instead of waiting for a timeout.
Signed-off-by: Jouni Malinen <j@w1.fi>
The extra data (nonce_s) used in this message was pointing to the
parsed, decrypted data and that buffer was previously freed just before
building the new message. This resulted in use of freed data and
possibly incorrect extra data value that caused the authentication
attempt to fail. Fix this by reordering the code to free the decrypted
data only after the new message has been generated. This was already the
case for EAP-AKA/AKA', but somehow missing from EAP-SIM.
Signed-off-by: Jouni Malinen <j@w1.fi>
The current position pointer was not updated when issuerUniqueID or
subjectUniqueID were present. This could result in extensions being
ignored.
Signed-off-by: Jouni Malinen <j@w1.fi>
Do not perform extended listen period operations when either a P2P
connection is in progress. This makes the connection more robust should
an extended listen timer trigger during such an operation.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Propagate max associated STAs in AP mode advertised by the driver to
core wpa_supplicant implemantion. This allows wpa_supplicant to update
the P2P GO group limit information automatically without having to
configure this limit manually. The information (if available) is also
used in the generic AP implementation to control maximum number of STA
entries.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Add a new wowlan_triggers option to wpa_supplicant.conf. The triggers in
this key will be used to configure the kernel wowlan configuration.
For now, support only simple flags. More complex triggers can be added
later on.
Signed-off-by: Eliad Peller <eliadx.peller@intel.com>
Disabling the link only clears the local state. The remote peer will
still think we are connected and disallow the setup.
Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
When de-authenticating from the AP, disable each TDLS link after
sending the teardown packet. Postpone the reset of the peer state
data until after the link disable request.
Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
Indicate to cfg80211 that interfaces created by the wpa_supplicant
or hostapd are owned by them, and that in case that the socket that
created them closes, these interfaces should be removed.
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Got segfault, when freeing drv and there exists registered timeout for
blocked rfkill. This patch adds cancel timeout to avoid this.
Signed-off-by: Eduardo Abinader <eduardo.abinader@openbossa.org>
Commit 96ecea5eb1 did not consider
to pass the VHT/HT/WMM capabilities of the peer for BSS with
open mode.
Address this issue by passing the capabilities irrespective of
the security mode.
Signed-off-by: Pradeep Reddy POTTETI <c_ppotte@qti.qualcomm.com>
If a driver wrapper misbehaves and does not indicate a frame body in the
event, core hostapd code should handle this consistently since that case
was already checked for in one location.
Signed-off-by: Jouni Malinen <j@w1.fi>
sta == NULL check is already done above based on category !=
WLAN_ACTION_PUBLIC, but that seems to be too complex for some static
analyzers, so avoid invalid reports by explicitly checking for this
again in the WLAN_ACTION_FT case.
Signed-off-by: Jouni Malinen <j@w1.fi>
The previous check for dl_list_len() or having an entry from the list is
sufficient, but some static analyzers cannot figure out that
dl_list_first() and dl_list_last() will return non-NULL in this type of
cases. Avoid invalid reports by explicitly checking for NULL.
Signed-off-by: Jouni Malinen <j@w1.fi>
Checking sm->pmksa is sufficient here, but that seems to be too
difficult for static analyzers to follow, so avoid false reports by
explicitly checking pmkid as well.
Signed-off-by: Jouni Malinen <j@w1.fi>
clang scan-build does not seem to like the 'd' suffix on floating
constants and ends up reporting analyzer failures. Since this suffix
does not seem to be needed, get rid of it to clear such warnings.
Signed-off-by: Jouni Malinen <j@w1.fi>
p2p_freq_to_channel() could return an error if the GO or P2P Client
operating channel is not valid. Check for this before generating the NFC
handover message.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
This is not of any real use anymore with nl80211_set_channel() taking
care of channel setting operation.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Configure driver with the new channel parameters (mainly, HT 20/40 MHz
bandwidth changes) as part of set_ap().
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
