Add EAPOL_SET hostapd command to configure EAPOL parameters
This new control interface command "EAPOL_REAUTH <MAC address>
<parameter> <value>" can be used to implement the IEEE 802.1X PAE
Set Authenticator Configuration operation.
RSN: Stop connection attempt on apparent PMK mismatch
If WPA2-Enterprise connection with full EAP authentication (i.e., no
PMKSA caching used) results in a PMKID that does not match the one the
AP/Authenticator indicates in EAPOL-Key msg 1/4, there is not much point
in trying to trigger full EAP authentication by sending EAPOL-Start
since this sequence was immediately after such full authentication
attempt.
There are known examples of authentication servers with incorrect MSK
derivation when TLS v1.2 is used (e.g., FreeRADIUS 2.2.6 or 3.0.7 when
built with OpenSSL 1.0.2). Write a clear debug log entry and also send
it to control interface monitors when it looks likely that this case has
been hit. After doing that, stop the connection attempt by
disassociating instead of trying to send out EAPOL-Start to trigger new
EAP authentication round (such another try can be tried with a new
association).
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.
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.
NFC: Add a hardcoded limit on maximum NDEF payload length
While this is already enforced in practice due to the limits on the
maximum control interface command length and total_length bounds
checking here, this explicit check on payload_length value may help
static analyzers understand the code better. (CID 122668)
wpa_supplicant: Fix a typo in wpa_scan_result_compar()
A typo in wpa_scan_result_compar() caused wrong scan results sorting
(and wrong roaming decision). This fixes a copy-paste regression
introduced by commit a1b790eb9d7514d1a6e0582a07f695a1564caa59 ('Select
AP based on estimated maximum throughput').
tests: Wait for scan to complete on all interfaces in reset()
When WpaSupplicant executes reset() it waits until all the ongoing scans
are completed. However, it checks the status of the wlanX interface
only. If a dedicated P2P device interface is used, scan may be still
running on the P2P Device interface, e.g., due to P2P_FIND. This might
affect subsequent tests.
Fix this by waiting until the scan is done both on wlanX and P2P
Device interfaces.
Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com> Reviewed-by: Ilan Peer <ilan.peer@intel.com>
NFC: Fix payload length validation in NDEF record parser
It was possible for the 32-bit record->total_length value to end up
wrapping around due to integer overflow if the longer form of payload
length field is used and record->payload_length gets a value close to
2^32. This could result in ndef_parse_record() accepting a too large
payload length value and the record type filter reading up to about 20
bytes beyond the end of the buffer and potentially killing the process.
This could also result in an attempt to allocate close to 2^32 bytes of
heap memory and if that were to succeed, a buffer read overflow of the
same length which would most likely result in the process termination.
In case of record->total_length ending up getting the value 0, there
would be no buffer read overflow, but record parsing would result in an
infinite loop in ndef_parse_records().
Any of these error cases could potentially be used for denial of service
attacks over NFC by using a malformed NDEF record on an NFC Tag or
sending them during NFC connection handover if the application providing
the NDEF message to hostapd/wpa_supplicant did no validation of the
received records. While such validation is likely done in the NFC stack
that needs to parse the NFC messages before further processing,
hostapd/wpa_supplicant better be prepared for any data being included
here.
Fix this by validating record->payload_length value in a way that
detects integer overflow. (CID 122668)
P2PS: Save intended interface address after P2PS PD
One possible outcome of the P2PS PD is P2P GO/P2P Client. In this case,
one peer becomes a P2P GO and the P2P Client joins it. Since multiple
GOs may run simultaneously on the same P2P Device, the P2P Client should
join using the intended interface address.
To be able to find the device by the intended interface address, save it
during the PD.
Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com> Reviewed-by: Max Stepanov <Max.Stepanov@intel.com> Reviewed-by: Ilan Peer <ilan.peer@intel.com>
P2PS: Set intended interface address correctly for new group
If a device may be an explicit GO, it adds the GO details in the PD
Request. First, we try to reuse an active GO. If it is not present, we
try to reuse a non-active persistent group. In the latter case, if a
dedicated P2P interface is needed, the intended address should be that
of the pending interface. However, the wpas_get_go_info() provided the
ssid->bssid address, which is the address of the P2P device. This might
result in an incorrect intended interface attribute in the PD Request in
case a separate group interface is used.
Fix this by setting group_iface variable to true only if a dedicated
interface should be used and set the attribute accordingly.
Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com> Reviewed-by: Max Stepanov <Max.Stepanov@intel.com> Reviewed-by: Ilan Peer <ilan.peer@intel.com>
Validate the PD Response frame contents more thoroughly when it is used
for P2PS.
Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com> Reviewed-by: Max Stepanov <Max.Stepanov@intel.com> Reviewed-by: Ilan Peer <ilan.peer@intel.com>
P2PS: Add intended iface address during PD for persistent group
When persistent group is used and the peer is GO in this group,
intended interface attribute should be added to PD request/response.
Not doing so violates the spec.
Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com> Reviewed-by: Max Stepanov <Max.Stepanov@intel.com> Reviewed-by: Ilan Peer <ilan.peer@intel.com>
If after P2PS PD the device should become a GO it sends P2PS-PROV-DONE
event which contains the GO interface name. If the GO isn't running yet
the device may use pending interface name. However, when the GO is
started, pending interface name will be removed.
Fix the GO interface name in P2PS-PROV-DONE event by copying the
interface name instead of saving the pointer.
Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com> Reviewed-by: Ilan Peer <ilan.peer@intel.com>
P2PS: Use wpas_p2p_create_iface() to check if dedicated iface is needed
Call wpas_p2p_create_iface() instead of just checking p2p_no_group_iface
config value. Not doing so, resulted in an incorrect behavior when the
driver sets WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE flag.
Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com> Reviewed-by: Ilan Peer <ilan.peer@intel.com>
When device A sends PD response to device B, device A should save
wps_prov_info for device B. Not doing so would result in a redundant and
incorrect PD flow, e.g., when upon PROV-DISC-DONE event device B starts
a GO and device A should join it.
Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com> Reviewed-by: Ilan Peer <ilan.peer@intel.com>
Max Stepanov [Thu, 2 Jul 2015 07:45:00 +0000 (10:45 +0300)]
P2P: Refactor p2p_process_prov_disc_resp() function
Add 'else if' to P2PS status verification to prevent a redundant
condition checking. The first 'if' condition is true only if
status == P2P_SC_SUCCESS || status == P2P_SC_SUCCESS_DEFERRED.
while the second condition checks:
status != P2P_SC_SUCCESS &&
status != P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE &&
status != P2P_SC_SUCCESS_DEFERRED
Thus, the two conditions are mutually exclusive and 'else if' can be
used if this case.
Signed-off-by: Max Stepanov <Max.Stepanov@intel.com> Reviewed-by: Ilan Peer <ilan.peer@intel.com>
Max Stepanov [Thu, 2 Jul 2015 07:45:00 +0000 (10:45 +0300)]
P2P: Delete redundant comparison in p2p_process_prov_disc_resp()
Delete redundant comparison of msg.wps_config_methods with
dev->req_config_methods in p2p_process_prov_disc_resp() since it's
already done early in this function. Also, the second comparison
doesn't make too much sense: it can happen after a possible
p2p_reset_pending_pd() call setting dev->req_config_methods to 0.
Signed-off-by: Max Stepanov <Max.Stepanov@intel.com> Reviewed-by: Ilan Peer <ilan.peer@intel.com>
Max Stepanov [Thu, 2 Jul 2015 07:44:59 +0000 (10:44 +0300)]
P2PS: Fix adv_id and adv_mac params of P2P-PROV-DISC-FAILURE
When wpa_supplicant receives a PD Response with reject status it
generated P2P-PROV-DISC-FAILURE event without adv_id and adv_mac
parameters. Fix this by adding these parameters to the
wpas_prov_disc_fail() function call.
Signed-off-by: Max Stepanov <Max.Stepanov@intel.com> Reviewed-by: Ilan Peer <ilan.peer@intel.com>
Dan Williams [Tue, 7 Jul 2015 15:49:54 +0000 (10:49 -0500)]
hostap: Fix send_mlme() after 'freq' parameter addition
This fixes the incomplete driver_hostap.c change from commit 5d180a77392690b141d95609d8c8692317712b4f ('drivers: Add freq parameter
to send_mlme() function') that did not take into account the internal
callers.
Previously, only CONNECTING->CONNECTING case ended up sending out an
EAPOL-Start frame to avoid sending the unnecessary initial EAPOL-Start.
However, this optimization prevented new EAPOL-Start from being
initiated when leaving the HELD state. Allow that case to trigger
immediate EAPOL-Start transmission to speed up connection.
Mike Gerow [Mon, 6 Jul 2015 21:26:57 +0000 (14:26 -0700)]
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.
ndisc_snoop: Avoid misaligned read of IPv6 address
The IPv6 address in the frame buffer may not be 32-bit aligned, so use a
local copy to align this before reading the address with 32-bit reads
(s6_addr32[]).
trace: Use explicit alignment requirements to avoid misalignment
64-bit builds with CONFIG_WPA_TRACE=y resulted in the wpabuf pointers
getting misaligned (only 32-bit aligned) and that would result in reads
and writes of unaligned size_t values. Avoid this by indicating explicit
alignment requirement for wpabuf_trace to 8 octets (i.e., there will be
extra four octets of padding in case of 64-bit builds).
Similarly, struct os_alloc_trace resulted in some potential misalignment
cases, e.g., when CONFIG_ACS=y uses a 'long double' variable within
struct hostapd_channel_data. Avoid misalignment issues with explicit
alignment indication.
src/utils/list.h ended up defining a local version of offsetof() due to
stddef.h not getting included. This resulted in unnecessary warnings
from ubsan related to "dereferencing" of a NULL pointer.
Commit 38279bdb35c1b0c248289752197ebddd2fdd52ef ('D-Bus: Coding style
cleanup') handled the dbus_new_handlers.c change properly, but misplaced
the second 'const' in dbus_old_handlers.c in a way that resulted in
duplicated const rather than marking the actual value const.
The FT-specific check for valid group cipher in wpa_ft_gen_req_ies() was
not up-to-date with the current list of supported ciphers. Fix this by
using a generic function to determine validity of the cipher. In
practice, this adds support for using CCMP-256 and GCMP-256 as the group
cipher with FT.
Jouni Malinen [Tue, 30 Jun 2015 18:40:48 +0000 (21:40 +0300)]
TLS: Remove unused tls_capabilities()
This mechanism to figure out TLS library capabilities has not been used
since commit fd2f2d0489635d590930bc0945fbc438ba1387e2 ('Remove
EAP-TTLSv1 and TLS/IA') (Sep 2011).
Jouni Malinen [Sun, 28 Jun 2015 18:35:43 +0000 (21:35 +0300)]
Add backtrace-based error path testing mechanism
The new TEST_FAIL and GET_FAIL control interface commands can be used
similarly to the earlier TEST_ALLOC_FAIL/GET_ALLOC_FAIL design. The new
version is more generic framework allowing any function to be annotated
for failure testing with the TEST_FAIL() macro. This mechanism is only
available in builds with CONFIG_WPA_TRACE_BFD=y and
CONFIG_TESTING_OPTIONS=y. For other builds, the TEST_FAIL() macro is
defined to return 0 to allow the compiler to remove the test code from
normal production builds.
As the first test site, allow os_get_random() to be marked for failing
based on call backtrace.
Jouni Malinen [Sun, 28 Jun 2015 15:14:58 +0000 (18:14 +0300)]
P2P: Do not allow 40 MHz co-ex PRI/SEC switch to force MCC
Do not allow 40 MHz co-ex PRI/SEC switch to force us to change our PRI
channel if we have an existing connection on the selected PRI channel
since doing multi-channel concurrency is likely to cause more harm than
using different PRI/SEC selection in environment with multiple BSSes on
these two channels with mixed 20 MHz or PRI channel selection.
Stepanov, Max [Tue, 23 Jun 2015 13:47:59 +0000 (13:47 +0000)]
P2PS: Fix attribute addition in p2p_buf_add_service_instance()
Fix a condition when Advertised Service Info Attribute is added to
a probe response in p2p_buf_add_service_instance(). The issue is
that a 'found' value is increased even if 'test' and 'adv->hash' hashes
are different. As result 'found' may have a non-zero value when an
attribute data length is 0. In this cause an empty attribute is about to
be added. Fixing it by eliminating 'found' and checking 'total_len'
containing a real number of bytes added to Advertised Service Info
Attribute.
Stepanov, Max [Tue, 23 Jun 2015 13:52:22 +0000 (13:52 +0000)]
P2PS: Fix p2p_find last parameter handling
In p2p_find command line processing a loop searching for multiple
'seek=' parameters modifies cmd buffer adding '\0' terminators.
The 'freq=' parameter is handled after that and can be
lost if a 'freq=' follows 'seek=' in a command line.
Fix it by moving a handling of 'freq=' parameter to be processed
before 'seek=' handling loop.
Signed-off-by: Max Stepanov <Max.Stepanov@intel.com>
Jouni Malinen [Sat, 27 Jun 2015 20:34:49 +0000 (23:34 +0300)]
AP: Increase maximum value accepted for cwmin/cwmax
The cwmin/cwmax parameters were limited more than is needed. Allow the
full range (0..15 for wmm_ac_??_{cwmin,cwmax} and 1..32767 for
tx_queue_data?_{cwmin,cwmax}) to be used.
Jouni Malinen [Sat, 27 Jun 2015 18:20:14 +0000 (21:20 +0300)]
SAE: Reject FFC commit-element with value p-1
The current P802.11 description of SAE uses "1 < element < p" as the
required range. However, this is not correct and does not match the
Dragonfly description of "1 < element < p-1". SAE definition will need
to change here. Update the implementation to reject p-1 based on the
correct rule here.
Jouni Malinen [Sat, 27 Jun 2015 14:10:19 +0000 (17:10 +0300)]
P2PS: Do not reply to ProbeReq on another channel when starting Listen
It was possible for the P2PS Probe Response frame to go out on the
channel on which a Probe Request frame was reported even when we are
just about to start Listen mode on another channel. This could result in
the peer device using incorrect channel for us. Fix this by skipping the
response in this special case while waiting for Listen mode to start.
This showed up as a hwsim test failure with test sequence "gas_fragment
p2ps_connect_display_method_nonautoaccept" in cases where the dev[0]
Listen channel was not same as the AP operating frequency in the GAS
test.
Jouni Malinen [Sat, 27 Jun 2015 09:41:40 +0000 (12:41 +0300)]
SAE: Reject commit-scalar value 1
IEEE Std 802.11-2012 description of SAE does not require this, i.e., it
describes the requirement as 0 < scalar < r for processing the Commit
message. However, this is not correct and will be changes to 1 < scalar
< r to match the Dragonfly description so that a trivial secret case
will be avoided explicitly.
This is not much of an issue for the locally generated commit-scalar
since it would be very unlikely to get the value of 1. For Commit
message processing, a peer with knowledge of the password could
potentially force the exchange to expose key material without this
check.
Dmitry Shmidt [Fri, 19 Jun 2015 17:33:50 +0000 (10:33 -0700)]
Send CTRL-EVENT-NETWORK-NOT-FOUND if no suitable network was found
This provides more information to upper layer programs on what happens
with connection attempts in cases where the enabled networks are not
found in scan results.
Kevin Cernekee [Sat, 20 Jun 2015 00:22:30 +0000 (17:22 -0700)]
Android: Fix nl80211 build if BOARD_*_PRIVATE_LIB is unspecified
wpa_supplicant has stub functions if the external p2p symbols are
unavailable, but the build still fails if the
wpa_driver_nl80211_driver_cmd symbol is missing. Fix this by leaving the
function pointer NULL. This is safe because wpa_drv_driver_cmd() performs
a NULL check.
Signed-off-by: Kevin Cernekee <cernekee@google.com>
Kevin Cernekee [Sat, 20 Jun 2015 00:22:29 +0000 (17:22 -0700)]
Android: Rename ANDROID_P2P_STUB to ANDROID_LIB_STUB
If BOARD_HOSTAPD_PRIVATE_LIB is not used on an Android build, we will
need to replace both the p2p functions *and* wpa_driver_nl80211_driver_cmd
in order to successfully link. Let's make the name more generic so it is
more obvious what it is used for.
Suggested-by: Dmitry Shmidt <dimitrysh@google.com> Signed-off-by: Kevin Cernekee <cernekee@google.com>
Jouni Malinen [Fri, 26 Jun 2015 12:29:29 +0000 (15:29 +0300)]
OpenSSL: Handle EC_POINT_is_on_curve() error case
Even though this OpenSSL function is documented as returning "1 if point
if on the curve and 0 otherwise", it can apparently return -1 on some
error cases. Be prepared for that and check explicitly against 1 instead
of non-zero.
Jouni Malinen [Fri, 26 Jun 2015 08:44:22 +0000 (11:44 +0300)]
SAE: Use random "password" in extra hunting-and-pecking loops
If PWE is discovered before the minimum number of loops (k) is reached,
the extra iterations use a random "password" to further obfuscate the
cost of discovering PWE.
Jouni Malinen [Thu, 25 Jun 2015 08:35:39 +0000 (11:35 +0300)]
SAE: Add side-channel protection to PWE derivation with ECC
This replaces the earlier IEEE Std 802.11-2012 algorithm with the design
from P802.11-REVmc/D4.0. Things brings in a blinding technique for
determining whether the pwd-seed results in a suitable PWE value.