Commit graph

428 commits

Author SHA1 Message Date
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
Jouni Malinen 6560caf2ca EAP-PEAP peer: Remove unused return value and error path
eap_peap_parse_phase1() returned 0 unconditionally, so there was no need
for that return value or the code path that tried to address the error
case.

Signed-off-by: Jouni Malinen <j@w1.fi>
2015-12-19 19:54:56 +02:00
Pali Rohár f24e48861d EAP-TTLS peer: Fix parsing auth= and autheap= phase2 params
This patch fixes an issue with an invalid phase2 parameter value
auth=MSCHAPv2 getting interpreted as auth=MSCHAP (v1) which could
degrade security (though, only within a protected TLS tunnel). Now when
invalid or unsupported auth= phase2 parameter combinations are
specified, EAP-TTLS initialization throws an error instead of silently
doing something.

More then one auth= phase2 type cannot be specified and also both auth= and
autheap= options cannot be specified.

Parsing phase2 type is case sensitive (as in other EAP parts), so phase2
parameter auth=MSCHAPv2 is invalid. Only auth=MSCHAPV2 is correct.

Signed-off-by: Pali Rohár <pali.rohar@gmail.com>
[Use cstr_token() to get rid of unnecessary allocation; cleanup]
Signed-off-by: Jouni Malinen <j@w1.fi>
2015-12-18 00:24:30 +02:00
Jouni Malinen 3c108b7573 EAP peer: External server certificate chain validation
This adds support for optional functionality to validate server
certificate chain in TLS-based EAP methods in an external program.
wpa_supplicant control interface is used to indicate when such
validation is needed and what the result of the external validation is.

This external validation can extend or replace the internal validation.
When ca_cert or ca_path parameter is set, the internal validation is
used. If these parameters are omitted, only the external validation is
used. It needs to be understood that leaving those parameters out will
disable most of the validation steps done with the TLS library and that
configuration is not really recommend.

By default, the external validation is not used. It can be enabled by
addingtls_ext_cert_check=1 into the network profile phase1 parameter.
When enabled, external validation is required through the CTRL-REQ/RSP
mechanism similarly to other EAP authentication parameters through the
control interface.

The request to perform external validation is indicated by the following
event:
CTRL-REQ-EXT_CERT_CHECK-<id>:External server certificate validation needed for SSID <ssid>

Before that event, the server certificate chain is provided with the
CTRL-EVENT-EAP-PEER-CERT events that include the cert=<hexdump>
parameter. depth=# indicates which certificate is in question (0 for the
server certificate, 1 for its issues, and so on).

The result of the external validation is provided with the following
command:
CTRL-RSP-EXT_CERT_CHECK-<id>:<good|bad>

It should be noted that this is currently enabled only for OpenSSL (and
BoringSSL/LibreSSL). Due to the constraints in the library API, the
validation result from external processing cannot be reported cleanly
with TLS alert. In other words, if the external validation reject the
server certificate chain, the pending TLS handshake is terminated
without sending more messages to the server.

Signed-off-by: Jouni Malinen <j@w1.fi>
2015-12-12 18:24:27 +02:00
Jouni Malinen b6e5e14fd4 EAP-FAST peer: Fix PAC parser error messages
Do not override the parsing error with the "PAC block not terminated
with END" message if the reason for the END line not yet being seen is
in failure to parse an earlier line.

Signed-off-by: Jouni Malinen <j@w1.fi>
2015-12-12 12:00:28 +02:00
Jouni Malinen 5b904b3e42 EAP-FAST: Check T-PRF result in MSK/EMSK derivation
Pass the error return from sha1_t_prf() to callers.

Signed-off-by: Jouni Malinen <j@w1.fi>
2015-12-12 11:20:05 +02:00
Jouni Malinen b1d8c5ce6a EAP-FAST peer: Fix error path handling for Session-Id
It was possible to hit a NULL pointer dereference if Session-Id
derivation failed due to a memory allocation failure.

Signed-off-by: Jouni Malinen <j@w1.fi>
2015-12-12 11:12:32 +02:00
Jouni Malinen 9ea91cd67c EAP-EKE peer: Fix memory leak on error path
If DHComponent_P derivation fails (local crypto operation failure), the
message buffer was not freed.

Signed-off-by: Jouni Malinen <j@w1.fi>
2015-12-01 00:20:25 +02:00
Jouni Malinen ea52a46e13 EAP-SIM peer: Fix memory leak on reauth error path
If init_for_reauth fails, the EAP-SIM peer state was not freed properly.
Use eap_sim_deinit() to make sure all allocations get freed. This could
be hit only if no random data could be derived for NONCE_MT.

Signed-off-by: Jouni Malinen <j@w1.fi>
2015-11-28 20:46:36 +02:00
Jouni Malinen 95577884ca EAP-pwd peer: Fix error path for unexpected Confirm message
If the Confirm message is received from the server before the Identity
exchange has been completed, the group has not yet been determined and
data->grp is NULL. The error path in eap_pwd_perform_confirm_exchange()
did not take this corner case into account and could end up
dereferencing a NULL pointer and terminating the process if invalid
message sequence is received. (CVE-2015-5316)

Signed-off-by: Jouni Malinen <j@w1.fi>
2015-11-10 18:40:54 +02:00
Jouni Malinen 8057821706 EAP-pwd peer: Fix last fragment length validation
All but the last fragment had their length checked against the remaining
room in the reassembly buffer. This allowed a suitably constructed last
fragment frame to try to add extra data that would go beyond the buffer.
The length validation code in wpabuf_put_data() prevents an actual
buffer write overflow from occurring, but this results in process
termination. (CVE-2015-5315)

Signed-off-by: Jouni Malinen <j@w1.fi>
2015-11-10 18:40:54 +02:00
Jouni Malinen 17b7032891 EAP peer: Clear ignore flag in INITIALIZE state
While this is not part of RFC 4137, the way m.check(eapReqData) is
implemented in wpa_supplicant allows an EAP method to not update the
ignore value even though each such call is really supposed to get a new
response. It seems to be possible to hit a sequence where a previous EAP
authentication attempt terminates with sm->ignore set from the last
m.check() call and the following EAP authentication attempt could fail
to go through the expected code path if it does not clear the ignore
flag. This is likely only hit in some error cases, though. The hwsim
test cases could trigger this with the following sequence:
eap_proto_ikev2 ap_wps_m1_oom

Signed-off-by: Jouni Malinen <j@w1.fi>
2015-10-31 21:56:59 +02:00
Jouni Malinen 3991cb7b3c EAP-IKEv2 peer: Avoid undefined behavior in pointer arithmetic
Reorder terms in a way that no invalid pointers are generated with
pos+len operations. end-pos is always defined (with a valid pos pointer)
while pos+len could end up pointing beyond the end pointer which would
be undefined behavior.

Signed-off-by: Jouni Malinen <j@w1.fi>
2015-10-24 21:43:54 +03:00
Jouni Malinen 72bb05a033 EAP-FAST peer: Avoid undefined behavior in pointer arithmetic
Reorder terms in a way that no invalid pointers are generated with
pos+len operations. end-pos is always defined (with a valid pos pointer)
while pos+len could end up pointing beyond the end pointer which would
be undefined behavior.

Signed-off-by: Jouni Malinen <j@w1.fi>
2015-10-24 21:43:54 +03:00
Jouni Malinen 5882c011d6 EAP-WSC peer: Reject connection on unexpected failure
Previously, the EAP-WSC peer state machine ended up just ignoring an
error and waiting for a new message from the AP. This is not going to
recover the exchange, so simply force the connection to terminate
immediately.

Signed-off-by: Jouni Malinen <j@w1.fi>
2015-08-30 18:37:44 +03:00
Jouni Malinen 7cb53ded11 Add build option to remove all internal RC4 uses
The new CONFIG_NO_RC4=y build option can be used to remove all internal
hostapd and wpa_supplicant uses of RC4. It should be noted that external
uses (e.g., within a TLS library) do not get disabled when doing this.

This removes capability of supporting WPA/TKIP, dynamic WEP keys with
IEEE 802.1X, WEP shared key authentication, and MSCHAPv2 password
changes.

Signed-off-by: Jouni Malinen <j@w1.fi>
2015-08-02 16:52:56 +03:00
Jouni Malinen 4549607b04 EAP-pwd peer: Comment out MS password hash if CONFIG_FIPS=y
The needed hash functions are not available in FIPS mode.

Signed-off-by: Jouni Malinen <j@w1.fi>
2015-08-02 16:52:56 +03:00
Jouni Malinen 1046db8b53 Rename tls_connection_get_keys() to tls_connection_get_random()
Commit 94f1fe6f63 ('Remove master key
extraction from tls_connection_get_keys()') left only fetching of
server/client random, but did not rename the function and structure to
minimize code changes. The only name is quite confusing, so rename this
through the repository to match the new purpose.

Signed-off-by: Jouni Malinen <j@w1.fi>
2015-08-02 16:52:56 +03:00
Jouni Malinen 835c89a16b EAP-TTLS: Disable CHAP, MSCHAP, and MSCHAPV2 in CONFIG_FIPS=y builds
FIPS builds do not include support for MD4/MD5, so disable
EAP-TTLS/CHAP, MSCHAP, and MSCHAPV2 when CONFIG_FIPS=y is used.

Signed-off-by: Jouni Malinen <j@w1.fi>
2015-08-01 21:07:44 +03:00
Jouni Malinen 125bbef0e7 EAP peer: Replace MD5 with SHA1 in duplicate message workaround
MD5 is not available in CONFIG_FIPS=y builds, so use SHA1 for the EAP
peer workaround that tries to detect more robustly whether a duplicate
message was sent.

Signed-off-by: Jouni Malinen <j@w1.fi>
2015-08-01 16:57:04 +03:00
Jouni Malinen 3947997dcc EAP-TLS/TTLS/PEAP/FAST peer: Stop connection more quickly on local failure
If there is only zero-length buffer of output data in error case, mark
that as an immediate failure instead of trying to report that
non-existing error report to the server. This allows faster connection
termination in cases where a non-recoverable error occurs in local TLS
processing, e.g., if none of the configured ciphers are available.

Signed-off-by: Jouni Malinen <j@w1.fi>
2015-07-28 21:00:18 +03:00
Jouni Malinen bb91243047 EAP-TTLS/PEAP/FAST peer: Stop immediately on local TLS processing failure
EAP-TLS was already doing this, but the other TLS-based EAP methods did
not mark methodState DONE and decision FAIL on local TLS processing
errors (instead, they left the connection waiting for a longer timeout).

Signed-off-by: Jouni Malinen <j@w1.fi>
2015-07-28 21:00:18 +03:00
Jouni Malinen fe1bf32974 Make TLS version number available in STATUS command
This adds a new STATUS command field "eap_tls_version" that shows the
TLS version number that was used during EAP-TLS/TTLS/PEAP/FAST exchange.
For now, this is only supported with OpenSSL.

Signed-off-by: Jouni Malinen <j@w1.fi>
2015-07-08 19:51:03 +03:00
Jouni Malinen 5650d379a3 OpenSSL: Add option to disable use of TLSv1.0
The new phase1 config parameter value tls_disable_tlsv1_0=1 can now be
used to disable use of TLSv1.0 for a network configuration. This can be
used to force a newer TLS version to be used. For example,
phase1="tls_disable_tlsv1_0=1 tls_disable_tlsv1_1=1" would indicate that
only TLS v1.2 is accepted.

Signed-off-by: Jouni Malinen <j@w1.fi>
2015-07-08 19:27:57 +03:00
Mike Gerow 471c810bc1 pkcs11: Don't ask for a new PIN on TLS handshake failure
The only time the PIN should fail is when we initialize the TLS
connection, so it doesn't really make sense to get rid of the PIN just
because some other part of the handshake failed.

This is a followup to commit fd4fb28179
('OpenSSL: Try to ensure we don't throw away the PIN unnecessarily').

Signed-off-by: Mike Gerow <gerow@google.com>
2015-07-07 19:25:31 +03:00
Jouni Malinen e9ed7d9898 EAP-TTLS: Avoid ubsan warning on 0x80<<24 not fitting in int
Use a typecast to make this unsigned so that the MSB fits within the
range of allowed values.

Signed-off-by: Jouni Malinen <j@w1.fi>
2015-07-07 16:25:06 +03:00
Jouni Malinen 597e8afeb4 ERP: Avoid mixing of enum types
Use explicit typecasting to avoid implicit conversion warnings in cases
where enum eap_erp_type is used in functions taking an EapType argument.

Signed-off-by: Jouni Malinen <j@w1.fi>
2015-07-07 16:25:06 +03:00
Jouni Malinen 33ba27d387 EAP-FAST peer: Stop immediately on key derivation failure
If key derivation fails, there is no point in trying to continue
authentication. In theory, this could happen if memory allocation during
TLS PRF fails.

Signed-off-by: Jouni Malinen <j@w1.fi>
2015-06-19 01:23:24 +03:00
Jouni Malinen ca24117a5a EAP-EKE: Add Session-Id
While RFC 6124 does not define how Session-Id is constructed for
EAP-EKE, there seems to be consensus among the authors on the
construction. Use this Type | Nonce_P | Nonce_S construction based on
the following email:

 From: Yaron Sheffer <yaronf.ietf at gmail.com>
 To: ietf at ietf.org
 Date: Wed, 17 Nov 2010 13:13:42 +0200

Expanding on my previous response, I suggest to resolve Bernard's
concern by adding the following text:

5.6 EAP Key Generation

EAP-EKE can be used for EAP key generation, as defined by [RFC 5247].
When used in this manner, the values required to establish the key
hierarchy are defined as follows:

- Peer-Id is the EAP-EKE ID_P value.
- Server-Id is the EAP-EKE ID_S value.
- Session-Id is the concatenated Type | Nonce_P | Nonce_S, where Type is
  the method type defined for EAP-EKE in [Sec. 4.1], a single octet.

Thanks,
	Yaron

Signed-off-by: Jouni Malinen <j@w1.fi>
2015-05-24 11:58:45 +03:00
Jouni Malinen 6aa5d95dab EAP-pwd peer: Make sure in_frag_pos is cleared to zero on allocation
The cleanup code will handle this, but it is more robust to make sure
this is cleared to zero when allocating a new buffer.

Signed-off-by: Jouni Malinen <j@w1.fi>
2015-05-03 18:26:50 +03:00
Jouni Malinen 28a069a545 EAP-pwd peer: Fix asymmetric fragmentation behavior
The L (Length) and M (More) flags needs to be cleared before deciding
whether the locally generated response requires fragmentation. This
fixes an issue where these flags from the server could have been invalid
for the following message. In some cases, this could have resulted in
triggering the wpabuf security check that would terminate the process
due to invalid buffer allocation.

Signed-off-by: Jouni Malinen <j@w1.fi>
2015-05-03 18:26:50 +03:00
Jouni Malinen 477c74395a EAP-pwd peer: Fix Total-Length parsing for fragment reassembly
The remaining number of bytes in the message could be smaller than the
Total-Length field size, so the length needs to be explicitly checked
prior to reading the field and decrementing the len variable. This could
have resulted in the remaining length becoming negative and interpreted
as a huge positive integer.

In addition, check that there is no already started fragment in progress
before allocating a new buffer for reassembling fragments. This avoid a
potential memory leak when processing invalid message.

Signed-off-by: Jouni Malinen <j@w1.fi>
2015-05-03 18:26:50 +03:00
Jouni Malinen dd2f043c9c EAP-pwd peer: Fix payload length validation for Commit and Confirm
The length of the received Commit and Confirm message payloads was not
checked before reading them. This could result in a buffer read
overflow when processing an invalid message.

Fix this by verifying that the payload is of expected length before
processing it. In addition, enforce correct state transition sequence to
make sure there is no unexpected behavior if receiving a Commit/Confirm
message before the previous exchanges have been completed.

Thanks to Kostya Kortchinsky of Google security team for discovering and
reporting this issue.

Signed-off-by: Jouni Malinen <j@w1.fi>
2015-05-03 18:26:50 +03:00
Jouni Malinen ff4a6d4382 EAP-SIM/AKA: Explicitly check for header to include Reserved field
This was previously checked as part of the eap_sim_parse_attr()
processing, but it is easier to review the code if there is an
additional explicit check for confirming that the Reserved field is
present since the pos variable is advanced beyond it.

Signed-off-by: Jouni Malinen <j@w1.fi>
2015-05-03 16:33:03 +03:00
Jouni Malinen 0dfb7be470 EAP-SAKE: Pass EAP identifier instead of full request
This simplifies analysis of areas that get access to unverified message
payload.

Signed-off-by: Jouni Malinen <j@w1.fi>
2015-05-03 16:32:46 +03:00
Jouni Malinen 87fcb5a735 EAP-PAX: Fix PAX_STD-1 and PAX_STD-3 payload length validation
The req_plen argument to eap_pax_process_std_1() and
eap_pax_process_std_3() could be smaller than sizeof(struct eap_pax_hdr)
since the main processing function was only verifying that there is
enough room for the ICV and then removed ICV length from the remaining
payload length.

In theory, this could have resulted in the size_t left parameter being
set to a negative value that would be interpreted as a huge positive
integer. That could then result in a small buffer read overflow and
process termination if MSGDUMP debug verbosity was in use.

In practice, it does not seem to be feasible to construct a short
message that would be able to pass the ICV validation (calculated using
HMAC-SHA1-128) even for the case where an empty password is used.
Anyway, the implementation should really check the length explicitly
instead of depending on implicit check through ICV validation.

Signed-off-by: Jouni Malinen <j@w1.fi>
2015-05-03 16:32:36 +03:00
Jouni Malinen c3c5615ee0 EAP-GPSK: Pass EAP identifier instead of full request
This simplifies analysis of areas that get access to unverified message
payload.

Signed-off-by: Jouni Malinen <j@w1.fi>
2015-05-03 16:32:28 +03:00
Jouni Malinen d36c803c69 EAP-TLS/PEAP/TTLS/FAST: Move more towards using struct wpabuf
The EAP-TLS-based helper functions can easily use struct wpabuf in more
places, so continue cleanup in that direction by replacing separate
pointer and length arguments with a single struct wpabuf argument.

Signed-off-by: Jouni Malinen <j@w1.fi>
2015-05-03 16:32:23 +03:00
Jouni Malinen 8d9f3b8ed6 EAP-FAST: Do not use type cast to remove const specification
All the uses here are read only, so there is no need to type case the
const specification away.

Signed-off-by: Jouni Malinen <j@w1.fi>
2015-05-03 16:32:19 +03:00
Jouni Malinen 07f9034d14 EAP-FAST: Pass EAP identifier instead of full request
This simplifies analysis of areas that get access to unverified message
payload.

Signed-off-by: Jouni Malinen <j@w1.fi>
2015-05-03 16:32:10 +03:00
Jouni Malinen f153e41bb2 EAP-EKE: Do not pass full request to eap_eke_build_fail()
This function is only using the Identifier field from the EAP request
header, so there is no need to pass it a pointer to the full message.
This makes it a bit easier to analyze the area that gets access to
unverified message payload.

Signed-off-by: Jouni Malinen <j@w1.fi>
2015-05-03 16:32:05 +03:00
Mikael Kanstrup 8b423edbd3 Declare all read only data structures as const
By analysing objdump output some read only structures were found in
.data section. To help compiler further optimize code declare these
as const.

Signed-off-by: Mikael Kanstrup <mikael.kanstrup@sonymobile.com>
2015-04-25 17:33:06 +03:00
Mike Gerow fd4fb28179 OpenSSL: Try to ensure we don't throw away the PIN unnecessarily
Now on an engine error we decode the error value and determine if the
issue is due to a true PIN error or not. If it is due to incorrrect PIN,
delete the PIN as usual, but if it isn't let the PIN be.

Signed-off-by: Mike Gerow <gerow@google.com>
2015-04-25 16:05:50 +03:00
Jouni Malinen 46c3befe24 tests: Add eapol-fuzzer
This program can be used to run fuzzing tests for areas related to EAPOL
frame parsing and processing on the supplicant side.

Signed-off-by: Jouni Malinen <j@w1.fi>
2015-04-22 11:44:19 +03:00
Jouni Malinen a867082cb8 EAP peer: Use 32-bit EAP method type for Phase 2 processing
This is a step towards enabling expanded EAP header within Phase 2 EAP
methods.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
2015-04-01 12:57:11 +03:00
Jouni Malinen af851914f8 Make tls_connection_get_keyblock_size() internal to tls_*.c
This function exposes internal state of the TLS negotiated parameters
for the sole purpose of being able to implement PRF for EAP-FAST. Since
tls_connection_prf() is now taking care of all TLS-based key derivation
cases, it is cleaner to keep this detail internal to each tls_*.c
wrapper implementation.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
2015-04-01 12:56:54 +03:00
Jouni Malinen fa0e715100 Use tls_connection_prf() for all EAP TLS-based key derivation
tls_openssl.c is the only remaining TLS/crypto wrapper that needs the
internal PRF implementation for EAP-FAST (since
SSL_export_keying_material() is not available in older versions and does
not support server-random-before-client case). As such, it is cleaner to
assume that TLS libraries support tls_connection_prf() and move the
additional support code for the otherwise unsupported cases into
tls_openssl.c.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
2015-03-31 15:47:32 +03:00
Jouni Malinen 3e808b831c EAP-pwd peer: Add support for hashed password
This extends EAP-pwd peer support to allow NtHash version of password
storage in addition to full plaintext password. In addition, this allows
the server to request hashed version even if the plaintext password is
available on the client. Furthermore, unsupported password preparation
requests are now rejected rather than allowing the authentication
attempt to continue.

Signed-off-by: Jouni Malinen <j@w1.fi>
2015-03-28 09:43:33 +02:00
Sunil Dutt dd5c155e2e eap_proxy: Callback to notify any updates from eap_proxy
This commit introduces a callback to notify any configuration updates
from the eap_proxy layer. This is used to trigger re-reading of IMSI and
MNC length.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
2015-03-02 12:47:20 +02:00
Jouni Malinen 7f7bfba919 Add an option allow canned EAP-Success for wired IEEE 802.1X
For wired IEEE 802.1X authentication, phase1="allow_canned_success=1"
can now be used to configure a mode that allows EAP-Success (and
EAP-Failure) without going through authentication step. Some switches
use such sequence when forcing the port to be authorized/unauthorized or
as a fallback option if the authentication server is unreachable. By
default, wpa_supplicant discards such frames to protect against
potential attacks by rogue devices, but this option can be used to
disable that protection for cases where the server/authenticator does
not need to be authenticated.

When enabled, this mode allows EAP-Success/EAP-Failure as an immediate
response to EAPOL-Start (or even without EAPOL-Start) and EAP-Success is
also allowed immediately after EAP-Identity exchange (fallback case for
authenticator not being able to connect to authentication server).

Signed-off-by: Jouni Malinen <j@w1.fi>
2015-02-01 19:22:54 +02:00
Jouni Malinen 49fcc32e91 EAP-MSCHAPv2 peer: Add option to disable password retry query
wpa_supplicant used to request user to re-enter username/password if the
server indicated that EAP-MSCHAPv2 (e.g., in PEAP Phase 2)
authentication failed (E=691), but retry is allowed (R=1). This is a
reasonable default behavior, but there may be cases where it is more
convenient to close the authentication session immediately rather than
wait for user to do something.

Add a new "mschapv2_retry=0" option to the phase2 field to allow the
retry behavior to be disabled. This will make wpa_supplicant abort
authentication attempt on E=691 regardless of whether the server allows
retry.

Signed-off-by: Jouni Malinen <j@w1.fi>
2015-02-01 17:45:19 +02:00
Jouni Malinen 467775c5ac tests: Pending EAP peer processing with VENDOR-TEST
This extends the VENDOR-TEST EAP method peer implementation to allow
pending processing case to be selected at run time. The
ap_wpa2_eap_vendor_test test case is similarly extended to include this
option as the second case for full coverage.

Signed-off-by: Jouni Malinen <j@w1.fi>
2015-01-28 13:09:31 +02:00
Ben 9bd0273931 EAP: Fix possible memory leak in eap_ttls_process_decrypted()
In case eap_peer_tls_encrypt() fails in eap_ttls_process_decrypted(),
free resp memory.

Signed-off-by: Ben Rosenfeld <ben.rosenfeld@intel.com>
2015-01-20 02:13:15 +02:00
Jouni Malinen cebee30f31 Add domain_match network profile parameter
This is similar with domain_suffix_match, but required a full match of
the domain name rather than allowing suffix match (subdomains) or
wildcard certificates.

Signed-off-by: Jouni Malinen <j@w1.fi>
2015-01-14 15:45:18 +02:00
Jouni Malinen d07d3fbda2 Add peer certificate alt subject name information to EAP events
A new "CTRL-EVENT-EAP-PEER-ALT depth=<i> <alt name>" event is now used
to provide information about server certificate chain alternative
subject names for upper layers, e.g., to make it easier to configure
constraints on the server certificate. For example:
CTRL-EVENT-EAP-PEER-ALT depth=0 DNS:server.example.com

Currently, this includes DNS, EMAIL, and URI components from the
certificates. Similar information is priovided to D-Bus Certification
signal in the new altsubject argument which is a string array of these
items.

Signed-off-by: Jouni Malinen <j@w1.fi>
2015-01-14 15:45:18 +02:00
Jouni Malinen e24aef10cf Fix a typo in domain_suffix_match documentation
Spell SubjectName correctly.

Signed-off-by: Jouni Malinen <j@w1.fi>
2015-01-11 00:27:01 +02:00
Jouni Malinen 394b54732e Improve subject_match and domain_suffix_match documentation
These were already covered in both README-HS20 for credentials and in
header files for developers' documentation, but the copy in
wpa_supplicant.conf did not include all the details. In addition, add a
clearer note pointing at subject_match not being suitable for suffix
matching domain names; domain_suffix_match must be used for that.

Signed-off-by: Jouni Malinen <j@w1.fi>
2015-01-11 00:27:01 +02:00
Jouni Malinen 8779ac8a67 EAP-IKEv2: Fix a typo in a debug message
Signed-off-by: Jouni Malinen <j@w1.fi>
2014-12-21 13:19:14 +02:00
Jouni Malinen bb68a6e3cc EAP-IKEv2 peer: Fix fragmentation reassembly
ret->ignore needs to be cleared to FALSE when sending fragment ack
message to avoid ignoring the fragment.

Signed-off-by: Jouni Malinen <j@w1.fi>
2014-12-21 00:48:24 +02:00
Jouni Malinen 8e5c1ec32f EAP-IKEv2: Add explicit limit for maximum message length
This avoids accepting unnecessarily large memory allocations.

Signed-off-by: Jouni Malinen <j@w1.fi>
2014-12-21 00:25:16 +02:00
Jouni Malinen ce460118a8 ERP: Drop ERP keys on failure on the peer
This allows recovery through fallback to full EAP authentication if the
server rejects us, e.g., due to having dropped ERP state.

Signed-off-by: Jouni Malinen <j@w1.fi>
2014-12-14 15:47:04 +02:00
Jouni Malinen b90d064f1a Add tls_session_reused=<0/1> into EAP peer TLS status
This can be used to determine whether the last TLS-based EAP
authentication instance re-used a previous session (e.g., TLS session
resumption or EAP-FAST session ticket).

Signed-off-by: Jouni Malinen <j@w1.fi>
2014-12-09 23:41:09 +02:00
Jouni Malinen d4913c585e OpenSSL: Fix EAP-FAST peer regression
Commit 35efa2479f ('OpenSSL: Allow TLS
v1.1 and v1.2 to be negotiated by default') changed from using
TLSv1_method() to SSLv23_method() to allow negotiation of TLS v1.0,
v1.1, and v1.2.

Unfortunately, it looks like EAP-FAST does not work with this due to
OpenSSL not allowing ClientHello extensions to be configured with
SSL_set_session_ticket_ext() when SSLv23_method() is used. Work around
this regression by initiating a separate SSL_CTX instance for EAP-FAST
phase 1 needs with TLSv1_method() while leaving all other EAP cases
using TLS to work with the new default that allows v1.1 and v1.2 to be
negotiated. This is not ideal and will hopefully get fixed in the future
with a new OpenSSL method, but until that time, this can be used allow
other methods use newer TLS versions while still allowing EAP-FAST to be
used even if it remains to be constraint to TLS v1.0 only.

Signed-off-by: Jouni Malinen <j@w1.fi>
2014-12-09 16:57:05 +02:00
Jouni Malinen 1f102d3bb0 Check os_snprintf() result more consistently - manual
This converts os_snprintf() result validation cases to use
os_snprintf_error() for cases that were note covered by spatch and
semantic patches.

Signed-off-by: Jouni Malinen <j@w1.fi>
2014-12-08 11:42:07 +02:00
Jouni Malinen d85e1fc8a5 Check os_snprintf() result more consistently - automatic 1
This converts os_snprintf() result validation cases to use
os_snprintf_error() where the exact rule used in os_snprintf_error() was
used. These changes were done automatically with spatch using the
following semantic patch:

@@
identifier E1;
expression E2,E3,E4,E5,E6;
statement S1;
@@

(
  E1 = os_snprintf(E2, E3, ...);
|
  int E1 = os_snprintf(E2, E3, ...);
|
  if (E5)
	E1 = os_snprintf(E2, E3, ...);
  else
	E1 = os_snprintf(E2, E3, ...);
|
  if (E5)
	E1 = os_snprintf(E2, E3, ...);
  else if (E6)
	E1 = os_snprintf(E2, E3, ...);
  else
	E1 = 0;
|
  if (E5) {
	...
	E1 = os_snprintf(E2, E3, ...);
  } else {
	...
	return -1;
  }
|
  if (E5) {
	...
	E1 = os_snprintf(E2, E3, ...);
  } else if (E6) {
	...
	E1 = os_snprintf(E2, E3, ...);
  } else {
	...
	return -1;
  }
|
  if (E5) {
	...
	E1 = os_snprintf(E2, E3, ...);
  } else {
	...
	E1 = os_snprintf(E2, E3, ...);
  }
)
? os_free(E4);
- if (E1 < 0 || \( E1 >= E3 \| (size_t) E1 >= E3 \| (unsigned int) E1 >= E3 \| E1 >= (int) E3 \))
+ if (os_snprintf_error(E3, E1))
(
  S1
|
{ ... }
)

Signed-off-by: Jouni Malinen <j@w1.fi>
2014-12-08 11:42:07 +02:00