Commit graph

492 commits

Author SHA1 Message Date
Jouni Malinen
23ddc7b810 tests: New style fuzzing tool for EAP-SIM peer processing
Signed-off-by: Jouni Malinen <j@w1.fi>
2019-06-02 16:42:41 +03:00
Hai Shalom
4df4133917 EAP-SIM/AKA: Add support for anonymous@realm
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>
2019-05-31 16:52:15 +03:00
Jouni Malinen
31bc66e4d1 More forceful clearing of stack memory with keys
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>
2019-05-26 16:11:56 +03:00
Mohit Sethi
5eefa8115b EAP-AKA: Add Session-Id derivation during fast-reauth
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>
2019-05-25 17:17:00 +03:00
Mohit Sethi
1c16b257a0 EAP-SIM: Add Session-Id derivation during fast-reauth
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>
2019-05-25 17:05:03 +03:00
Jouni Malinen
848718ddde EAP-SAKE: Report hash function failures to callers
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>
2019-04-19 16:52:01 +03:00
Jouni Malinen
d2d1a324ce EAP-pwd peer: Fix reassembly buffer handling
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>
2019-04-17 13:24:37 +03:00
Jouni Malinen
90ee1bf5f1 EAP-MSCHAPv2: Propagate GetAsymetricStartKey() failures up from getKey()
Report failure from getKey() if MSK cannot be derived due to unexpected
sha1_vector() local failure.

Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
2019-04-16 21:21:35 +03:00
Jouni Malinen
8b093db2c3 EAP-pwd: Remove unused checks for cofactor > 1 cases
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>
2019-04-13 18:28:05 +03:00
Jouni Malinen
89bbe6f87a EAP-pwd: Get rid of unnecessary allocation of temporary buffer
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>
2019-04-09 17:11:15 +03:00
Jouni Malinen
4396f74a36 EAP-pwd: Enforce 1 < rand,mask < r and rand+mask mod r > 1
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>
2019-04-09 17:11:15 +03:00
Jouni Malinen
16d4f10691 EAP-pwd: Check element x,y coordinates explicitly
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>
2019-04-09 17:11:15 +03:00
Mathy Vanhoef
8ad8585f91 EAP-pwd client: Verify received scalar and element
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>
2019-04-09 17:11:15 +03:00
Jouni Malinen
242e857285 Extend domain_match and domain_suffix_match to allow list of values
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>
2019-04-09 16:24:38 +03:00
Ervin Oro
a916ff5cd8 Add support for an optional context parameter to TLS exporter
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>
2019-03-16 18:52:09 +02:00
Jared Bents
841205a1ce OpenSSL: Add 'check_cert_subject' support for TLS server
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>
2019-03-11 14:09:45 +02:00
Jouni Malinen
0173423f41 Use char pointers for EAP configuration parameters without length
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>
2019-03-11 14:09:45 +02:00
Davina Lu
83ebf55865 wpa_supplicant: Support Multi-AP backhaul STA onboarding with WPS
The Wi-Fi Alliance Multi-AP Specification v1.0 allows onboarding of a
backhaul STA through WPS. To enable this, the backhaul STA needs to add
a Multi-AP IE to the WFA vendor extension element in the WSC M1 message
that indicates it supports the Multi-AP backhaul STA role. The Registrar
(if it support Multi-AP onboarding) will respond to that with a WSC M8
message that also contains the Multi-AP IE, and that contains the
credentials for the backhaul SSID (which may be different from the SSID
on which WPS is performed).

Introduce a new parameter to wpas_wps_start_pbc() and allow it to be
set via control interface's new multi_ap=1 parameter of WPS_PBC call.
multi_ap_backhaul_sta is set to 1 in the automatically created SSID.
Thus, if the AP does not support Multi-AP, association will fail and
WPS will be terminated.

Only wps_pbc is supported.

This commit adds the multi_ap argument only to the control socket
interface, not to the D-Bus interface.

Since WPS associates with the fronthaul BSS instead of the backhaul BSS,
we should not drop association if the AP announces fronthaul-only BSS.
Still, we should only do that in the specific case of WPS. Therefore,
add a check to multi_ap_process_assoc_resp() to allow association with a
fronthaul-only BSS if and only if key_mgmt contains WPS.

Signed-off-by: Davina Lu <ylu@quantenna.com>
Signed-off-by: Igor Mitsyanko <igor.mitsyanko.os@quantenna.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Cc: Marianna Carrera <marianna.carrera.so@quantenna.com>
2019-02-18 22:35:41 +02:00
Jouni Malinen
789b48bb48 EAP peer: Clear temporary message buffers before freeing
These buffers in TLS-based EAP methods might contain keys or password
(e.g., when using TTLS-PAP or PEAP-GTC), so clear them explicitly to
avoid leaving such material into heap memory unnecessarily.

Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
2019-02-05 23:34:30 +02:00
Jouni Malinen
d05dda61d8 PEAP: Explicitly clear temporary keys from memory when using CMK
The case of PEAPv0 with crypto binding did not clear some of the
temporary keys from stack/heap when those keys were not needed anymore.
Clear those explicitly to avoid unnecessary caching of keying material.

Signed-off-by: Jouni Malinen <j@w1.fi>
2019-02-02 00:01:29 +02:00
Jouni Malinen
4e1cd3468e EAP-PEAP: Derive EMSK and use 128-octet derivation for MSK
Derive EMSK when using EAP-PEAP to enable ERP. In addition, change the
MSK derivation for EAP-PEAP to always derive 128 octets of key material
instead of the 64 octets to cover just the MSK. This is needed with the
PRF used in TLS 1.3 since the output length is mixed into the PRF
context.

Signed-off-by: Jouni Malinen <j@w1.fi>
2019-02-01 23:52:28 +02:00
Jouni Malinen
aae0eece5f EAP-TLS: Update Session-Id derivation with TLS v1.3
Move to the version used in draft-ietf-emu-eap-tls13-03.txt, i.e.,
include the 0x0D prefix and use a different TLS-Exporter() label string.

Signed-off-by: Jouni Malinen <j@w1.fi>
2019-01-05 18:00:26 +02:00
Jouni Malinen
cc9c4feccc OpenSSL: Allow systemwide policies to be overridden
Some distributions (e.g., Debian) have started introducting systemwide
OpenSSL policies to disable older protocol versions and ciphers
throughout all programs using OpenSSL. This can result in significant
number of interoperability issues with deployed EAP implementations.

Allow explicit wpa_supplicant (EAP peer) and hostapd (EAP server)
parameters to be used to request systemwide policies to be overridden if
older versions are needed to be able to interoperate with devices that
cannot be updated to support the newer protocol versions or keys. The
default behavior is not changed here, i.e., the systemwide policies will
be followed if no explicit override configuration is used. The overrides
should be used only if really needed since they can result in reduced
security.

In wpa_supplicant, tls_disable_tlsv1_?=0 value in the phase1 network
profile parameter can be used to explicitly enable TLS versions that are
disabled in the systemwide configuration. For example,
phase1="tls_disable_tlsv1_0=0 tls_disable_tlsv1_1=0" would request TLS
v1.0 and TLS v1.1 to be enabled even if the systemwide policy enforces
TLS v1.2 as the minimum version. Similarly, openssl_ciphers parameter
can be used to override systemwide policy, e.g., with
openssl_ciphers="DEFAULT@SECLEVEL=1" to drop from security level 2 to 1
in Debian to allow shorter keys to be used.

In hostapd, tls_flags parameter can be used to configure similar
options. E.g., tls_flags=[ENABLE-TLSv1.0][ENABLE-TLSv1.1]

Signed-off-by: Jouni Malinen <j@w1.fi>
2019-01-05 17:14:26 +02:00
Jouni Malinen
e3afbd796c OSEN: Disable TLS v1.3 by default
TLS v1.3 was already disabled by default for EAP-FAST, EAP-TTLS,
EAP-PEAP, and EAP-TLS, but the unauthenticated client cases of EAP-TLS
-like functionality (e.g., the one used in OSEN) were missed. Address
those EAP types as well in the same way of disabling TLS v1.3 by default
for now to avoid functionality issues with TLS libraries that enable TLS
v1.3 by default.

Signed-off-by: Jouni Malinen <j@w1.fi>
2019-01-05 16:52:05 +02:00
Nishant Chaprana
391d922bcf EAP-pwd peer: Fix memory leak in eap_pwd_perform_confirm_exchange()
hash variable is allocated memory using eap_pwd_h_init(), but there are
couple of error case code paths which skips deallocation of hash. The
memory of hash is deallocated using eap_pwd_h_final(). Fix this by
calling eap_pwd_h_final() at the end of the function if execution got
there through one of those error cases.

Signed-off-by: Nishant Chaprana <n.chaprana@samsung.com>
2018-10-16 12:11:32 +03:00
Srikanth Marepalli
bd88ed60fa eap_proxy: Fix memory leaks when using eap_peer_erp_init()
The external session_id and emsk from eap_proxy_get_eap_session_id() and
eap_proxy_get_emsk() need to be freed consistently in all code paths
within eap_peer_erp_init() and outside it in the case ERP is not
initialized.

Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
2018-09-21 21:34:08 +03:00
Jouni Malinen
3a11c69e0d EAP-TLS: Derive Session-Id using TLS-Exporter when TLS v1.3 is used
This updates Session-Id derivation with TLS v1.3 per
draft-ietf-emu-eap-tls13-00.

Signed-off-by: Jouni Malinen <j@w1.fi>
2018-06-01 17:58:56 +03:00
Jouni Malinen
f8aed720e4 EAP-TLS: Update key derivation label per draft-ietf-emu-eap-tls13-00
The label strings used for deriving Key_Material with TLS v1.3 were
changed, so update the implementation to match the new values.

Signed-off-by: Jouni Malinen <j@w1.fi>
2018-06-01 17:41:59 +03:00
Dan Harkins
b8acd50114 EAP-pwd peer: Add SHA512 hash based salt mechanism
Signed-off-by: Dan Harkins <dharkins@lounge.org>
2018-05-28 22:09:20 +03:00
Dan Harkins
fb3675848c EAP-pwd peer: Add SHA256 hash based salt mechanism
Signed-off-by: Dan Harkins <dharkins@lounge.org>
2018-05-28 22:09:20 +03:00
Dan Harkins
7ef8adc7d8 EAP-pwd peer: Add SHA-1 hash based salt mechanism
Signed-off-by: Dan Harkins <dharkins@lounge.org>
2018-05-28 22:09:20 +03:00
Jouni Malinen
7280723fbf EAP-pwd peer: Check for unexpected state for ID exchange
Aborty processing if ID exchange processing is entered twice
unexpectedly. This avoids memory leaks in the function.

Signed-off-by: Jouni Malinen <j@w1.fi>
2018-05-28 22:09:20 +03:00
Dan Harkins
44136f6ca2 EAP-pwd peer: Add support for salted password databases
These changes add support for salted password databases to EAP-pwd per
RFC 8146. This commits introduces the framework for enabling this and
the actual salting mechanisms are introduced in the following commits.

Signed-off-by: Dan Harkins <dharkins@lounge.org>
2018-05-28 22:09:20 +03:00
Dan Harkins
0744e303cf EAP-pwd peer: Move PWE derivation to commit exchange
There is no need to do this during the ID exchange, so move PWE
deriation into the following commit exchange in preparation for adding
support for salted passwords.

Signed-off-by: Dan Harkins <dharkins@lounge.org>
2018-05-28 22:09:20 +03:00
Dan Harkins
2a5c291881 EAP-pwd: Move EC group initialization to earlier step
This is needed for adding support for salted passwords.

Signed-off-by: Dan Harkins <dharkins@lounge.org>
2018-05-28 17:15:07 +03:00
Jouni Malinen
e8a7af9a38 EAP-TLS peer: Disable TLS v1.3 by default
The current EAP peer implementation is not yet ready for the TLS v1.3
changes with EAP-TTLS, EAP-PEAP, and EAP-FAST, so disable TLS v1.3 for
this EAP method for now.

While the current EAP-TLS implementation is more or less complete for
TLS v1.3, there has been no interoperability testing with other
implementations, so disable for by default for now until there has been
chance to confirm that no significant interoperability issues show up
with TLS version update. phase1="tls_disable_tlsv1_3=0" configuration
parameter can be used to enable TLS v1.3 (assuming the TLS library
supports it; e.g., when using OpenSSL 1.1.1).

Signed-off-by: Jouni Malinen <j@w1.fi>
2018-05-01 22:13:38 +03:00
Jouni Malinen
bbbc7e8016 EAP-TLS: Extend TLS version config to allow TLS v1.3 to be disabled
This may be needed to avoid interoperability issues with the new
protocol version and significant changes for EAP use cases in both key
derivation and handshake termination.

Signed-off-by: Jouni Malinen <j@w1.fi>
2018-05-01 22:13:38 +03:00
Jouni Malinen
0de820b333 EAP-TLS peer: MSK/EMSK derivation with TLS v1.3
Use new MSK/EMSK derivation mechanism if TLS v1.3 or newer is used per
draft-mattsson-eap-tls13-02.txt.

Signed-off-by: Jouni Malinen <j@w1.fi>
2018-05-01 17:53:07 +03:00
Jouni Malinen
1854981c78 EAP-TLS peer: Allow NewSessionTicket after Client Finished with TLS v1.3
The EAP session cannot be marked fully completed on sending Client
Finished with TLS v1.3 since the server may still send NewSessionTicket
before EAP-Success.

Signed-off-by: Jouni Malinen <j@w1.fi>
2018-05-01 17:51:34 +03:00
Jouni Malinen
6dd98483eb EAP-TLS peer: Support fragmentation of last message
With TLS v1.3, the Finished message from the client can require
fragmentation. Postpone key derivation and marking of the EAP session
fully completed until all the fragments of that last message are sent to
avoid losing all the subsequent fragments.

Signed-off-by: Jouni Malinen <j@w1.fi>
2018-05-01 17:49:19 +03:00
Jouni Malinen
bac1bdba3e EAP-TLS peer: Determine whether TLS v1.3 or newer is used
This is needed to be able to handle different key derivation and message
handshakes in EAP implementation.

Signed-off-by: Jouni Malinen <j@w1.fi>
2018-05-01 17:45:37 +03:00
Ahmed ElArabawy
45f7574d31 Propagate the EAP method error code
In the current implementation, upon an EAP method failure, followed by
an EAP failure, the EAP Status is propagated up in wpa_supplicant with a
general failure parameter string "failure". This parameter is used for a
notification on the dbus.

This commit reports the EAP method failure error code in a separate
callback.

The solution in this commit is generic to all EAP methods, and can be
used by any method that need to pass its error code. However, this
commit only implements the reporting for EAP-SIM and EAP-AKA methods
where the Notification Code (in AT_NOTIFICATION) is used as the method
specific error code value.

Signed-off-by: Ahmed ElArabawy <arabawy@google.com>
2018-03-31 11:57:33 +03:00
Jouni Malinen
9e834fc648 EAP-SIM/AKA: Separate identity for MK derivation
This allows a separate configuration parameter (imsi_identity) to be
used in EAP-SIM/AKA/AKA' profiles to override the identity used in MK
derivation for the case where the identity is expected to be from the
last AT_IDENTITY attribute (or EAP-Response/Identity if AT_IDENTITY was
not used). This may be needed to avoid sending out an unprotected
permanent identity information over-the-air and if the EAP-SIM/AKA
server ends up using a value based on the real IMSI during the internal
key derivation operation (that does not expose the data to others).

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
2018-01-21 11:28:53 +02:00
Sean Parkinson
04b1bcc5f3 EAP-pwd: Use abstract crypto API
This makes it easier to use EAP-pwd with other crypto libraries than
OpenSSL.

Signed-off-by: Sean Parkinson <sean@wolfssl.com>
2017-12-24 21:40:21 +02:00
Vidyullatha Kanchanapally
084131c850 FILS: Allow eap_peer_get_erp_info() to be called without config
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
2017-10-18 01:19:40 +03:00
Jouni Malinen
2ed70c7586 OpenSSL: Add option to disable ECDHE with Suite B RSA
The hostapd.conf tls_flags=[SUITEB-NO-ECDH] and wpa_supplicant network
profile phase1="tls_suiteb_no_ecdh=1" can now be used to configure Suite
B RSA constraints with ECDHE disabled. This is mainly to allow
the DHE TLS cipher suite to be tested.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
2017-09-18 12:12:48 +03:00
Jouni Malinen
60ed2f24eb Suite B: Add tls_suiteb=1 parameter for RSA 3k key case
This adds phase1 parameter tls_suiteb=1 into wpa_supplicant
configuration to allow TLS library (only OpenSSL supported for now) to
use Suite B 192-bit level rules with RSA when using >= 3k (3072) keys.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
2017-09-17 00:09:47 +03:00
Akihiro Onodera
84fccc7242 Send Client-Error when AT_KDF attributes from the server are incorrect
After KDF negotiation, must check only requested change occurred in the
list of AT_KDF attributes. If there are any other changes, the peer must
behave like the case that AT_MAC had been incorrect and authentication
is failed. These are defined in EAP-AKA' specification RFC 5448, Section
3.2.

Add a complete check of AT_KDF attributes and send Client-Error if a
change which is not requested is included in it.

Signed-off-by: Tomoharu Hatano <tomoharu.hatano@sony.com>
2017-09-10 20:11:07 +03:00
Akihiro Onodera
446600c354 Add AT_KDF attributes to Synchronization-Failure in EAP-AKA'
AT_KDF attributes need to be included in Synchronization-Failure
according to EAP-AKA' specification RFC 5448.

Signed-off-by: Tomoharu Hatano <tomoharu.hatano@sony.com>
2017-09-10 01:39:37 +03:00
Jouni Malinen
1f2ae8cff5 EAP-TTLS: Fix a memory leak on error paths
The allocated challenge needs to be freed on these error paths as well.

Signed-off-by: Jouni Malinen <j@w1.fi>
2017-07-08 16:21:38 +03:00
Ilan Peer
83e003a913 EAP-TTLS: Fix possible memory leak in eap_ttls_phase2_request_mschap()
The msg buffer needs to be freed on these two error paths.

Signed-off-by: Ilan Peer <ilan.peer@intel.com>
2017-07-08 16:19:36 +03:00
Ilan Peer
96e595a9f1 EAP-LEAP: Fix possible memory leak in eap_leap_process_request()
Free 'resp' object in case of a failure to derive the response.

Signed-off-by: Ilan Peer <ilan.peer@intel.com>
2017-07-08 16:14:03 +03:00
Vidyullatha Kanchanapally
2a71673e27 ERP: Derive ERP key only after successful EAP authentication
ERP key was previously derived immediately after the availability of
EMSK and Session-Id and the ERP key hierarchy was saved even if the
authentication resulted in failure eventually. Instead, derive the ERP
key only after a successful EAP authentication.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
2017-06-23 19:37:14 +03:00
Vidyullatha Kanchanapally
b5db6e5dc4 eap_proxy: Support multiple SIMs in get_imsi()
This allows the eap_proxy mechanism to be used with multiple SIMs by
following the configured sim_num to index which SIM to use for when
fetching the IMSI through eap_proxy.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
2017-06-06 03:42:32 +03:00
Vidyullatha Kanchanapally
0020876514 eap_proxy: Build realm from IMSI for proxy based EAP methods
For proxy based EAP methods, the EAP identity is constructed in
eap_proxy layer from IMSI when required. Realm information from identity
is used to do ERP eventually, hence construct the realm for proxy based
methods from IMSI in core wpa_supplicant to enable the ERP use case.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
2017-06-06 03:41:23 +03:00
Vidyullatha Kanchanapally
8696e61702 eap_proxy: Add support for deriving ERP information
This commit adds support for deriving ERP key information in EAP Proxy
based EAP method implementations.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
2017-06-05 08:04:52 +03:00
Vidyullatha Kanchanapally
4aa329298d ERP: Do not generate ERP keys when domain name is not specified
This commit adds changes to not generate ERP information if the domain
name is not specified in the EAP identity. keyName-NAI needs the realm
part and as such, it is reasonable to require the main EAP configuration
to provide that realm.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
2017-05-22 13:51:23 +03:00
Jouni Malinen
01dd2b1054 ERP: Silence static analyzer warning
The check for erp->keyname_nai within eap_erp_get_key() is apparently
too difficult for some static analyzers to notice. Add an explicit check
for os_strchr() return value being non-NULL to avoid false reports.

Signed-off-by: Jouni Malinen <j@w1.fi>
2017-05-01 22:08:16 +03:00
Vidyullatha Kanchanapally
15def72fab ERP: External control of ERP key information
This allows ERP keys to be managed by external entities, e.g., when
offloading FILS shared key authentication to a driver.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
2017-04-07 18:46:13 +03:00
Johannes Berg
a1f11e34c4 Use os_memdup()
This leads to cleaner code overall, and also reduces the size
of the hostapd and wpa_supplicant binaries (in hwsim test build
on x86_64) by about 2.5 and 3.5KiB respectively.

The mechanical conversions all over the code were done with
the following spatch:

    @@
    expression SIZE, SRC;
    expression a;
    @@
    -a = os_malloc(SIZE);
    +a = os_memdup(SRC, SIZE);
    <...
    if (!a) {...}
    ...>
    -os_memcpy(a, SRC, SIZE);

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2017-03-07 13:19:10 +02:00
Jouni Malinen
b41d3e0a75 crypto: Process des_encrypt() error returns in callers
This updates all the des_encrypt() callers to handle error cases.

Signed-off-by: Jouni Malinen <j@w1.fi>
2017-02-28 11:24:05 +02:00
Jouni Malinen
76aa318381 EAP: Call deinit_for_reauth() for Phase 2 EAP methods
EAP-TTLS/PEAP/FAST were previously doing this for init_for_reauth(), but
not for deinit_for_reauth(). Add the deinit_for_reauth() call as well to
cover cases like EAP-AKA cleaup of AT_CHECKCODE data.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
2017-02-10 19:48:12 +02:00
Jouni Malinen
02156b98b7 EAP-AKA: Don't use anonymous identity in phase2
This adds the same changes to EAP-AKA that were previous done for
EAP-SIM to allow functionality within an EAP-TTLS/PEAP/FAST tunnel
without causing issues to the phase 1 identity string.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
2017-02-10 19:48:12 +02:00
Paul Stewart
9e2afe10e6 EAP-SIM: Don't use anonymous identity in phase2
The "anonymous_identity" configuration field has more than one
semantic meaning. For tunneled EAP methods, this refers to the
outer EAP identity. For EAP-SIM, this refers to the pseudonym
identity. Also, interestingly, EAP-SIM can overwrite the
"anonymous_identity" field if one is provided to it by the
authenticator.

When EAP-SIM is tunneled within an outer method, it makes sense
to only use this value for the outer method, since it's unlikely
that this will also be valid as an identity for the inner EAP-SIM
method. Also, presumably since the outer method protects the
EAP-SIM transaction, there is no need for a pseudonym in this
usage.

Similarly, if EAP-SIM is being used as an inner method, it must
not push the pseudonym identity using eap_set_anon_id() since it
could overwrite the identity for the outer EAP method.

Signed-off-by: Paul Stewart <pstew@google.com>
2017-02-10 19:48:12 +02:00
Paul Stewart
ed9b1c16d5 EAP peer: Cache decrypted requests for EAP-SIM/AKA/AKA'
Add an internal flag which indicates to tunneled EAP methods (FAST,
PEAP, TTLS) that they should cache decrypted EAP-SIM/AKA/AKA' requests.
This allows EAP-SIM/AKA/AKA' to be tunneled within these outer methods
while using an external SIM authenticator over the control interface.

Signed-off-by: Paul Stewart <pstew@google.com>
2017-02-10 19:48:12 +02:00
Jouni Malinen
7a6c3de23a ERP: Use macro for EMSKname length instead of hardcoded integer value
While RFC 5295 uses "8" as the value to use in the length field in KDF
context when deriving EMSKname, it is clearer to use the macro defining
EMSKname as the value since the KDF design in RFC 5295 encodes the
length of the derived data in octets in that part of the context data.
This change is just making the implementation easier to understand while
not actually changing the behavior.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
2017-02-03 15:35:21 +02:00
Jouni Malinen
bb3ea71a23 ERP: Fix rIK derivation
Unlike the EMSKname and rRK derivations, rIK derivation is actually
using the "optional data" component in the context data (see RFC 5295).
RFC 6696 defines that optional data to be the cryptosuite field for rIK.
This was missing from the previous implementation and that resulted in
incorrect rIK being derived.

In addition, the rIK Label string does not actually include the "EAP "
prefix in the way as the rRK Label in RFC 6696 does. This would also
have resulted in incorrect rIK value.

Fix rIK derivation by adding the cryptosuite value into the KDF context
data and fixing the label string. This change is not backwards
compatible and breaks all ERP use cases (including FILS shared key
authentication) with older (broken) and new (fixed)
hostapd/wpa_supplicant builds.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
2017-02-03 15:34:59 +02:00
Jouni Malinen
95de34a10a Remove trailing whitespace
Signed-off-by: Jouni Malinen <j@w1.fi>
2016-12-28 14:31:42 +02:00
Purushottam Kushwaha
a6f3761f7d eap_proxy: Add support for SIM state change indication from eap_proxy
This registers a new callback to indicate change in SIM state. This
helps to do some clean up (more specifically pmksa_flush) based on the
state change of the SIM. Without this, the reconnection using the cached
PMKSA could happen though the SIM is changed.

Currently eap_proxy_sim_state corresponds to only SIM_STATE_ERROR. This
can be further extended.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
2016-12-19 22:21:07 +02:00
Jouni Malinen
79a54ab9f6 eap_proxy: Fix eap_proxy_init() prototype to use const eapol_cb
The eapol_cb structure was made const and that change resulted in a
compilation warning/error if CONFIG_EAP_PROXY=<name> is enabled in the
wpa_supplicant build configuration. Fix this by updating the function
prototype to match the change.

Note: This results in a change needed to external eap_proxy_*.c
implementations to match the change.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
2016-12-19 22:14:07 +02:00
Jouni Malinen
de57d87353 ERP: Make eap_peer_finish() callable
This is needed for FILS to process EAP-Finish/Re-auth.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
2016-10-22 18:26:00 +03:00
Jouni Malinen
c28767e11c ERP: Make eap_peer_erp_reauth_start() available
This needs to be callable through the EAPOL supplicant wrappers to allow
FILS implementation to use ERP.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
2016-10-22 18:25:50 +03:00
Jouni Malinen
bf07e05349 ERP: Do not pass full EAP header to eap_peer_erp_reauth_start()
That function does not need the full EAP header -- it only needs to know
which EAP identifier to use in the message. Make this usable for cases
where the previous EAP message may not exist (FILS).

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
2016-10-10 21:11:47 +03:00
Brian Candler
2875e32333 EAP-pwd: Fix Prep in EAP-pwd-ID/Response when EAP_PWD_PREP_MS is used
Fix the pre-processing field in the response when EAP_PWD_PREP_MS is
being used. This fixes interoperability with EAP-pwd servers that
validate the Prep field in EAP-pwd-ID/Response when the RFC2759
(PasswordHashHash) pre-processing is used.

Signed-off-by: Brian Candler <B.Candler@pobox.com>
2016-10-08 19:43:09 +03:00
Jouni Malinen
205d2d1ff5 Fix typos in wpa_supplicant configuration parameter documentation
Signed-off-by: Jouni Malinen <j@w1.fi>
2016-09-10 21:09:52 +03:00
Jouni Malinen
ac36b133aa TNCC: Mark functions static
These are called through function pointers, so no need to make the
function symbols directly available outside this file.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
2016-06-24 01:38:04 +03:00
David Benjamin
7358170787 TLS: Split tls_connection_prf() into two functions
Most protocols extracting keys from TLS use RFC 5705 exporters which is
commonly implemented in TLS libraries. This is the mechanism used by
EAP-TLS. (EAP-TLS actually predates RFC 5705, but RFC 5705 was defined
to be compatible with it.)

EAP-FAST, however, uses a legacy mechanism. It reuses the TLS internal
key block derivation and derives key material after the key block. This
is uncommon and a misuse of TLS internals, so not all TLS libraries
support this. Instead, we reimplement the PRF for the OpenSSL backend
and don't support it at all in the GnuTLS one.

Since these two are very different operations, split
tls_connection_prf() in two. tls_connection_export_key() implements the
standard RFC 5705 mechanism that we expect most TLS libraries to
support. tls_connection_get_eap_fast_key() implements the
EAP-FAST-specific legacy mechanism which may not be implemented on all
backends but is only used by EAP-FAST.

Signed-Off-By: David Benjamin <davidben@google.com>
2016-05-23 20:40:12 +03:00
Jouni Malinen
9d136b00ac EAP-SAKE: Do not debug print result if eap_sake_compute_mic() fails
This gets rid of a valgrind warning on uninitialized memory read in the
eap_proto_sake_errors test case where the result was used after the
failed eap_sake_compute_mic() call.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
2016-05-16 22:26:37 +03:00
Jouni Malinen
0884633577 EAP-PAX: Do not debug print result if eap_pax_mac() fails
This gets rid of a valgrind warning on uninitialized memory read in the
eap_proto_pax_errors test case where the result was used after the
failed eap_pax_mac() call.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
2016-05-16 22:25:25 +03:00
Jouni Malinen
92abe3782f EAP-FAST: Check sha1_t_prf() result in eap_fast_get_cmk()
This gets rid of a valgrind warning on uninitialized memory read in the
eap_proto_fast_errors test case where the result was used after the
failed sha1_t_prf() call.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
2016-05-16 22:24:01 +03:00
Ilan Peer
b8f02d8baf EAP-PWD peer: Fix possible memory leak on error path
Fix possible memory leak in eap_pwd_perform_commit_exchange().

Signed-off-by: Ilan Peer <ilan.peer@intel.com>
2016-03-03 16:28:41 +02:00
Jouni Malinen
5558b9980f EAP-FAST peer: Remove fixed return value from eap_fast_parse_phase1()
This function was always returning 0, so the error path was unreachable.

Signed-off-by: Jouni Malinen <j@w1.fi>
2016-02-20 10:07:29 +02:00
Jouni Malinen
d1d8a2bd62 EAP peer: Simplify buildNotify return
There is no need for the local variable and two return statements.

Signed-off-by: Jouni Malinen <j@w1.fi>
2016-02-07 21:01:41 +02:00
Jouni Malinen
1314bc11cf Clean up EAP peer PCSC identity functions
Leave out more code if PCSC_FUNCS is not defined since config->pcsc != 0
case cannot be used with such a build.

Signed-off-by: Jouni Malinen <j@w1.fi>
2016-02-07 20:51:04 +02:00
Jouni Malinen
e265838a43 EAP-FAST: Fix an error path in PAC binary format parsing
Need to clear the pac pointer for the first error case to avoid freeing
the previous PAC entry if the following entry has an invalid header.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
2016-02-06 00:26:31 +02:00
Jouni Malinen
269f9d5d10 EAP peer: Use ifdef PCSC_FUNCS to get rid of compiler warnings
clang started warning about the use of || with constants that came from
PCSC_FUNCS not being enabled in the build. It seems to be easier to just
ifdef this block out completely since that has the same outcome for
builds that do not include PC/SC support.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
2016-01-15 18:41:30 +02:00
Jouni Malinen
0daa9f6a13 EAP-TTLS peer: Fix success after fragmented final Phase 2 message
If the final Phase 2 message needed fragmentation, EAP method decision
was cleared from UNCOND_SUCC or COND_SUCC to FAIL and that resulted in
the authentication failing when the EAP-Success message from the server
got rejected. Fix this by restoring the EAP method decision after
fragmentation.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
2016-01-15 13:37:15 +02:00
Jouni Malinen
49a26bb3e3 EAP peer: Simplify EAP method registration call
Free the allocated structure in error cases to remove need for each EAP
method to handle the error cases separately. Each registration function
can simply do "return eap_peer_method_register(eap);" in the end of the
function.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
2016-01-13 23:30:25 +02:00
Jouni Malinen
7ce5603251 EAP-WSC peer: Remove unused state values
The FRAG_ACK and DONE state were not used at all, so remove them.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
2016-01-13 22:09:08 +02:00
Jouni Malinen
7a36f1184e EAP-PAX: Check hmac_sha1_vector() return value
This function can fail at least in theory, so check its return value
before proceeding. This is mainly helping automated test case coverage
to reach some more error paths.

Signed-off-by: Jouni Malinen <j@w1.fi>
2016-01-06 21:12:08 +02:00
Jouni Malinen
acc39435ff EAP-PEAP peer: Cryptobinding in fast-reconnect case with inner EAP
This was reported to fail with Windows 2012r2 with "Invalid Compound_MAC
in cryptobinding TLV". It turns out that the server decided to go
through inner EAP method (EAP-MSCHAPv2 in the reported case) even when
using PEAP fast-reconnect. This seems to be against the [MS-PEAP]
specification which claims that inner EAP method is not used in such a
case. This resulted in a different CMK being derived by the server (used
the version that used ISK) and wpa_supplicant (used the version where
IPMK|CMK = TK without ISK when using fast-reconnect).

Fix this interop issue by making wpa_supplicant to use the
fast-reconnect version of CMK derivation only when using TLS session
resumption and the server having not initiated inner EAP method before
going through the cryptobinding exchange.

Signed-off-by: Jouni Malinen <j@w1.fi>
2016-01-05 23:50:50 +02:00
Jouni Malinen
750f5d9964 EAP-FAST: Enable AES256-based TLS cipher suites with OpenSSL
This extends the list of TLS cipher suites enabled for EAP-FAST to
include AES256-based suites.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
2015-12-31 20:52:58 +02:00
Jouni Malinen
d39f796f43 EAP-TNC peer: Remove dead code related to fragmentation
The data->state == WAIT_FRAG_ACK case is already handling all cases
where data->out_buf could be non-NULL, so this additional check after
the WAIT_FRAG_ACK steps cannot be reached. Remove the duplicated dead
code.

Signed-off-by: Jouni Malinen <j@w1.fi>
2015-12-24 19:16:15 +02:00
Jouni Malinen
abbbaa4997 TNC: Print received IF-TNCCS message as debug ASCII hexdump
This makes it easier to see what TNCC is processing.

Signed-off-by: Jouni Malinen <j@w1.fi>
2015-12-24 18:33:19 +02:00
Jouni Malinen
d745f02e0e EAP-TNC peer: Allow fragment_size to be configured
Previously, a fixed 1300 fragment_size was hardcoded. Now the EAP
profile parameter fragment_size can be used to override this.

Signed-off-by: Jouni Malinen <j@w1.fi>
2015-12-24 14:19:23 +02:00
Jouni Malinen
d6b536f7e5 Add ocsp=3 configuration parameter for multi-OCSP
ocsp=3 extends ocsp=2 by require all not-trusted certificates in the
server certificate chain to receive a good OCSP status. This requires
support for ocsp_multi (RFC 6961). This commit is only adding the
configuration value, but all the currently included TLS library wrappers
are rejecting this as unsupported for now.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
2015-12-24 00:54:30 +02:00
Jouni Malinen
cb73008594 EAP-TTLS/PEAP/FAST: Reject unsupported Phase 2 method in configuration
Instead of using default list of methods, reject a configuration with an
unsupported EAP method at the time the main TLS method is being
initialized.

Signed-off-by: Jouni Malinen <j@w1.fi>
2015-12-20 17:32:10 +02:00
Jouni Malinen
18704f6cdc EAP-TLS: Merge common error paths
There is no need to keep these identical error paths separate.

Signed-off-by: Jouni Malinen <j@w1.fi>
2015-12-20 17:25:41 +02:00
Jouni Malinen
4f5c86e7bd EAP-PEAP peer: Fix a memory leak on an error path
If memory allocation for adding SoH response fails, the SoH response was
not freed properly on the error path.

Signed-off-by: Jouni Malinen <j@w1.fi>
2015-12-20 17:25:41 +02:00
Jouni Malinen
4b90fcdb76 EAP-PEAP peer: Check SHA1 result when deriving Compond_MAC
This handles a mostly theoretical case where hmac_sha1_vector() might
fail for some reason.

Signed-off-by: Jouni Malinen <j@w1.fi>
2015-12-19 20:34:27 +02:00