Commit graph

8922 commits

Author SHA1 Message Date
Jouni Malinen
d4c4ec9240 wlantest: Verify FTIE length before checking MIC
tdls_verify_mic() and tdls_verify_mic_teardown() could have tried to
read the 16-octet FTIE MIC when processing a TDLS frame even if the
received FTIE is truncated. At least in theory, this could result in
reading couple of octets beyond the frame buffer.

Signed-off-by: Jouni Malinen <j@w1.fi>
2015-04-22 11:44:19 +03:00
Jouni Malinen
253103681c FT: Fix WMM TSPEC validation in driver-based AP MLME case
Commit 88b32a99d3 ('FT: Add FT AP support
for drivers that manage MLME internally') added an alternative way of
processing the WMM TSPEC from RIC. However, that change did not seem to
include the same checks for WMM TSPEC element length that were used in
the original implementation for MLME-in-hostapd case. Fix this by
sharing the older implementation of copying the WMM TSPEC from RIC for
both cases.

It looks like the destination buffer for the response is sufficiently
long for the fixed length copy, but it may have been possible to trigger
a read beyond the end of the FTIE by about 50 bytes. Though, that seems
to be within the buffer received for RX buffer in the case that uses
this driver-based AP MLME design for FT.

Signed-off-by: Jouni Malinen <j@w1.fi>
2015-04-22 11:44:19 +03:00
Jouni Malinen
762a0bfb01 wlantest: Fix Beacon and Probe Response frame parser
These functions did not verify that the received frame is long enough to
contain the beginning of the variable length IE area. A truncated frame
could have caused a segmentation fault due to reading beyond the buffer.

Signed-off-by: Jouni Malinen <j@w1.fi>
2015-04-22 11:44:19 +03:00
Jouni Malinen
26b3f64428 tests: Add ap-mgmt-fuzzer
This program can be used to run fuzzing tests for areas related to AP
management frame parsing and processing.

Signed-off-by: Jouni Malinen <j@w1.fi>
2015-04-22 11:44:19 +03:00
Jouni Malinen
0af57c3dd8 tests: Add wnm-fuzzer
This program can be used to run fuzzing tests for areas related to WNM
frame parsing and processing on the client side.

Signed-off-by: Jouni Malinen <j@w1.fi>
2015-04-22 11:44:19 +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
a65d7495b5 tests: Add p2p-fuzzer
This program can be used to run fuzzing tests for areas related to P2P
message parsing and processing. p2p-fuzzer allows data files to be used
to inject Probe Response and Action frames for processing by the P2P
module.

Signed-off-by: Jouni Malinen <j@w1.fi>
2015-04-22 11:44:19 +03:00
Jouni Malinen
632931c3ce P2P: Use WPS_SEC_DEV_TYPE_MAX_LEN in P2P array definition
This makes it more obvious that the wps_parse_msg() bounds checking is
used to verify that there is sufficient space in the P2P buffer for the
secondary device types.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
2015-04-22 11:44:19 +03:00
Jouni Malinen
6ca8a74cd0 tests: Add a module test for wpa_ssid_txt() with too long SSID
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com
2015-04-22 11:44:19 +03:00
Jouni Malinen
0f5acfba06 Use common is_ctrl_char() helper function
This modifies couple of code segments that replaced control characters
in strings with '_' to use a common helper function.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
2015-04-22 11:44:19 +03:00
Jouni Malinen
f371869a96 tests: P2P protocol tests for too long variable length fields
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
2015-04-22 11:44:19 +03:00
Jouni Malinen
5a041acc0a WPS: Ignore too long SSID attribute
While it looks like all the users of this parsed attribute were able to
handle longer SSID values, there is no valid use case for these and to
avoid any potential future issues, enforce maximum length (32 bytes) on
the SSID during parsing.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
2015-04-22 11:44:19 +03:00
Jouni Malinen
d6c3067d32 Replace SSID_LEN with SSID_MAX_LEN
This makes source code more consistent.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
2015-04-22 11:44:19 +03:00
Jouni Malinen
eaa8eefed1 Replace MAX_SSID_LEN with SSID_MAX_LEN
This makes source code more consistent. The use within Android driver
interface is left as-is to avoid changes in the old PNO interface
definition.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
2015-04-22 11:44:18 +03:00
Jouni Malinen
81847c22ba Replace HOSTAPD_MAX_SSID_LEN with SSID_MAX_LEN
This makes source code more consistent.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
2015-04-22 11:44:18 +03:00
Jouni Malinen
6fb761c690 Replace WPA_MAX_SSID_LEN with SSID_MAX_LEN
This makes the source code more consistent.

Signed-off-by: Jouni Malinen <j@w1.fi>
2015-04-22 11:44:18 +03:00
Jouni Malinen
d9d1b9527a Use SSID_MAX_LEN define instead of value 32 when comparing SSID length
This makes the implementation easier to understand.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
2015-04-22 11:44:18 +03:00
Jouni Malinen
65b10253d6 WPS: Ignore too long Device Name attribute
While it looks like all the users of this parsed attribute were able to
handle longer Device Name values, there is no valid use case for these
and to avoid any potential issues in upper layer components, enforce
maximum length (32 bytes) on the Device Name during parsing.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
2015-04-22 11:44:18 +03:00
Jouni Malinen
cc6f24380c Add WPS_DEV_NAME_MAX_LEN define and use it when comparing length
This make code easier to understand.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
2015-04-22 11:44:18 +03:00
Jouni Malinen
dd3d8578d0 P2PS: Check for maximum SSID length in Persistent Group Info
While none of the current users of msg.persistent_ssid{,_len} would have
issues with too long SSID value, it is safer to enforce bounds checking
on the SSID while parsing the attribute to avoid any potential issues in
the future.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
2015-04-22 11:44:18 +03:00
Jouni Malinen
05e46a944a Ignore too long SSID element value in parser
The SSID element is defined to have a valid length range of 0-32. While
this length was supposed to validated by the users of the element
parser, there are not really any valid cases where the maximum length of
32 octet SSID would be exceeded and as such, the parser itself can
enforce the limit as an additional protection.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
2015-04-22 11:44:18 +03:00
Jouni Malinen
9ed4eee345 P2P: Validate SSID element length before copying it (CVE-2015-1863)
This fixes a possible memcpy overflow for P2P dev->oper_ssid in
p2p_add_device(). The length provided by the peer device (0..255 bytes)
was used without proper bounds checking and that could have resulted in
arbitrary data of up to 223 bytes being written beyond the end of the
dev->oper_ssid[] array (of which about 150 bytes would be beyond the
heap allocation) when processing a corrupted management frame for P2P
peer discovery purposes.

This could result in corrupted state in heap, unexpected program
behavior due to corrupted P2P peer device information, denial of service
due to process crash, exposure of memory contents during GO Negotiation,
and potentially arbitrary code execution.

Thanks to Google security team for reporting this issue and smart
hardware research group of Alibaba security team for discovering it.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
2015-04-22 11:44:18 +03:00
Jouni Malinen
90758f09ec Mark QCA vendor command id 53 reserved, but not used anymore
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
2015-04-22 11:21:18 +03:00
Jouni Malinen
f41ded6fa4 Remove unused leftover from multi-SSID design
The multi-SSID design that used a single beaconing BSSID with multiple
SSIDs was never completed in this repository, so there is no need to
maintain the per-STA ssid/ssid_probe pointers that could only point to
&hapd->conf->ssid. Save some memory and reduce code complexity by
removing this unused partial capability.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
2015-04-22 11:17:32 +03:00
Jouni Malinen
cb71a8342d OpenSSL: Clean up TLS PRF implementation
Commit fa0e715100 ('Use
tls_connection_prf() for all EAP TLS-based key derivation') copied some
pointer checks from the generic implementation to tls_openssl.c.
However, these are arrays and cannot be NULL in OpenSSL data. Remove the
unnecessary checks and add master_key_length check for completeness.
(CID 109619).

Signed-off-by: Jouni Malinen <j@w1.fi>
2015-04-22 11:17:26 +03:00
Jouni Malinen
7f90a234b6 Add QCA vendor subcmd for OCB
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
2015-04-22 01:05:52 +03:00
Jouni Malinen
897418a28d eap_example: Fix configuration by added DH parameters
The internal TLS implementation supports number of additional cipher
suites that require DH parameters to be set on the server. Such a cipher
suite is selected by default in the eap_example case which prevented the
TLS handshake from completing successfully. Fix this by adding DH
parameters to the server configuration.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
2015-04-17 11:26:36 +03:00
Jouni Malinen
1acf38f1a5 Add ifname to vlan_remove_dynamic() debug print
This makes it easier to interpret debug logs for cases where hostapd
control multiple interfaces.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
2015-04-13 17:08:10 +03:00
Jouni Malinen
2e192bd08f Print debug entry on STA pruning from other interfaces
This makes it easier to interpret debug logs in case hostapd controls
multiple interfaces and a STA roams between them.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
2015-04-13 17:08:10 +03:00
Michael Braun
515b176e9c tests: Verify RSN preauth with dynamic VLANs
This change add two new tests to verify hostapd operation when used with
VLANs. Both are based on pmksa_cache_preauth and enable dynamic VLANs,
pmksa_cache_preauth_vlan_used additionally uses a station with VID 1.

Signed-off-by: Michael Braun <michael-dev@fami-braun.de>
2015-04-13 17:08:10 +03:00
Michael Braun
c8e6beabb6 Remove VLAN interface on STA free
Currently, vlan_remove_dynamic() is only called when the station VLAN ID
is changed (ap_sta_bind_vlan), but not when the station is freed. So
dynamic VLAN interfaces are not removed actually except within 1x
reauthentification VLAN ID change, although most of the code is already
there.

This patch fixes this by calling vlan_remove_dynamic() in ap_free_sta().

It cannot just use sta->vlan_id for this, as this might have been
changed without calling ap_sta_bind_vlan() (ap/ieee802_11.c:handle_auth
fetches from RADIUS cache for WPA-PSK), thus reference counting might
not have been updated. Additionally, reference counting might get wrong
due to old_vlanid = 0 being passed unconditionally, thus increasing the
reference counter multiple times.

So tracking the currently assigned (i.e., dynamic_vlan counter
increased) VLAN is done in a new variable sta->vlan_id_bound. Therefore,
the old_vlan_id argument of ap_sta_bind_vlan() is no longer needed and
setting the VLAN for the sta in driver happens unconditionally.

Additionally, vlan->dynamic_vlan is only incremented when it actually
is a dynamic VLAN.

Signed-off-by: Michael Braun <michael-dev@fami-braun.de>
2015-04-13 17:08:10 +03:00
Michael Braun
de31fb052c vlan: Ignore multiple NEWLINK messages
hostapd receives NEWLINK messages multiple times and thus does
configuration of the the vlan interface multiple times.

This is not required and leads to the following during cleanup in
test pmksa_cache_preauth_vlan_used:
 1. run-test.py does: brctl delif brvlan1 wlan3.1
 2. hostapd processes NEWLINK and does: brctl addif brvlan1 wlan3.1
 3. run-test.py does: brctl delbr brvlan1
    -> fails as wlan3.1 is still in the bridge

This patch fixes this by ignoring repeated NEWLINK messages.

Signed-off-by: Michael Braun <michael-dev@fami-braun.de>
2015-04-13 15:34:33 +03:00
Michael Braun
371205dd0c vlan: Ignore DELLINK on interfaces that exists
When hitting
> Failed to create interface wlan3.1: -23 (Too many open files in system)
> Try to remove and re-create wlan3.1
hostapd deletes the AP_VLAN interface and then recreates it. Thus the
kernel assigns the same ifidx to the new interfaces and sends DELLINK
and NEWLINK mesages.

As the DELLINK messages are processed after the struct hostapd_vlan is
added, hostapd deletes the struct hostapd_vlan entry, deconfigures the
AP_VLAN interface and leaves vlan_newlink nothing to find afterwards.

So this patch makes DELLINK messages to be ignored when the interface
exists.

Signed-off-by: Michael Braun <michael-dev@fami-braun.de>
2015-04-13 15:31:56 +03:00
Michael Braun
a5e81ba9eb Fix STA VLAN bind for RSN pre-authentication case
Previously, during RSN preauthentication, ap_sta_bind_vlan() was called,
which fails for non-zero sta->vlan_id as the station is not known to the
kernel driver.

Fix this by binding the station only if it is associated. If it is not
associated, ap_sta_bind_vlan() will be done later during association.

In addition, reject Access-Accept if the returned VLAN ID is not valid
in the current hostapd configuration.

Signed-off-by: Michael Braun <michael-dev@fami-braun.de>
2015-04-13 15:26:40 +03:00
Michael Braun
3ffdeb7ac8 Fix RSN preauthentication with dynamic_vlan enabled but unused
sta->vlan_id == -1 means no VLAN, as does vlan_id = 0.

Signed-off-by: Michael Braun <michael-dev@fami-braun.de>
2015-04-13 15:26:40 +03:00
Jouni Malinen
1d0a917f36 tests: D-Bus BSS interface and WPS Type values
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
2015-04-13 15:09:23 +03:00
Floris Bos
8e2c5f1a20 dbus: Fix WPS property of fi.w1.wpa_supplicant1.BSS interface
The dbus interface documentation says the following about the
WPS property of the fi.w1.wpa_supplicant1.BSS interface:

==
WPS information of the BSS. Empty dictionary indicates no WPS support.
Dictionary entries are:

Type	s	"pbc", "pin", ""
==

However the implementation returns "type" => "" for BSSes
that do not support WPS.

Fix the implementation to match the documentation.
Return empty dictionary if there is no WPS support.
And "type" => "" if WPS is supported, but is not in progress
right now.

Signed-off-by: Floris Bos <bos@je-eigen-domein.nl>
2015-04-13 15:08:46 +03:00
Nick Kralevich
d447cd596f Updates for stricter automatic memcpy bounds checking
Both Android's libc and glibc support _FORTIFY_SOURCE, a compiler
and libc feature which inserts automatic bounds checking into
common C functions such as memcpy() and strcpy(). If a buffer
overflow occurs when calling a hardened libc function, the
automatic bounds checking will safely shutdown the program and
prevent memory corruption.

Android is experimenting with _FORTIFY_SOURCE=3, a new fortify
level which enhances memcpy() to prevent overflowing an element
of a struct. Under the enhancements, code such as

  struct foo {
    char empty[0];
    char one[1];
    char a[10];
    char b[10];
  };

  int main() {
    foo myfoo;
    int n = atoi("11");
    memcpy(myfoo.a, "01234567890123456789", n);
    return 0;
  }

will cleanly crash when the memcpy() call is made.

Fixup hostap code to support the new level. Specifically:

* Fixup sha1_transform so it works with the enhanced bounds checking.
The old memcpy() code was attempting to write to context.h0, but that
structure element is too small and the write was extending (by design)
into h1, h2, h3, and h4. Use explicit assignments instead of
overflowing the struct element.

* Modify most of the structures in ieee802_11_defs.h to use ISO C99
flexible array members (https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html)
instead of a zero length array. Zero length arrays have zero length,
and any attempt to call memcpy() on such elements will always overflow.
Flexible array members have no such limitation. The only element not
adjusted is probe_req, since doing so will generate a compile time error,
and it's not obvious to me how to fix it.

Signed-off-by: Nick Kralevich <nnk@google.com>
2015-04-13 14:01:40 +03:00
Jouni Malinen
60eb9e173e AP: Enable multicast snooping on bridge if ProxyARP IPv6 is in use
This is needed to allow correct ProxyARP behavior for IPv6.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
2015-04-13 14:00:32 +03:00
Jouni Malinen
b79911853f Fix CONFIG_AP=y build without CONFIG_CTRL_IFACE
Signed-off-by: Jouni Malinen <j@w1.fi>
2015-04-04 11:56:53 +03:00
Jouni Malinen
954f03aab2 Fix compilation issues with CONFIG_NO_CONFIG_WRITE=y
Signed-off-by: Jouni Malinen <j@w1.fi>
2015-04-04 11:52:03 +03:00
Jouni Malinen
138bf11852 tests: INTERFACE_ADD/REMOVE with vif without creation/removal
This is also a regression test for INTERFACE_ADD parsing.

Signed-off-by: Jouni Malinen <j@w1.fi>
2015-04-04 11:02:22 +03:00
Ben Greear
da3db6812d Fix INTERFACE_ADD parsing
This fixes a regression caused by commit
efa232f915 ('Add support for virtual
interface creation/deletion') for the case where an empty extra argument
is included.

Signed-off-by: Ben Greear <greearb@candelatech.com>
2015-04-04 11:02:04 +03:00
Jouni Malinen
6812782462 hlr_auc_gw: Allow Milenage RES length to be reduced
Some USIM use shorter RES length than the 64-bit default from Milenage.
Such cases did not interoperate with the hlr_auc_gw implementation. Make
it possible to configure the RES length 4..8 octets, i.e., 32 to 64
bits) to support such USIM.

Signed-off-by: Jouni Malinen <j@w1.fi>
2015-04-03 12:44:03 +03:00
Ola Olsson
4839f7c768 wpa_cli: Fix a typo in usage text
Signed-off-by: Ola Olsson <ola.olsson@sonymobile.com>
2015-04-03 11:34:51 +03:00
Jason Abele
a20a3616cd wpa_supplicant: Clear blacklist on connect
It has been noticed that the band steering/load balancing of some
multi-AP networks will lead to an ever-growing list of blacklisted
BSSIDs. This eventually leads to a connection drop when the connection
is pushed to a distant AP.

Fix this issue by clearing the blacklist upon successful connect.

Signed-off-by: Jason Abele <jason@aether.com>
2015-04-03 10:51:36 +03:00
Mark Salyzyn
0144ecb8c8 Android: wpa_ctrl missing include for sys/stat.h
wpa_ctrl.c gets sys/stat.h inherited from
private/android_filesystem_config.h it should
not rely on this in the future. The intent is
to move fs_config function into libcutils and
thus deprecate any need for sys/stat.h in this
include file.

Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>
2015-04-03 10:47:36 +03:00
Ben Greear
0bb20efcd0 HS 2.0R2: Allow user to specify spp.xsd file location
Allow user to specify the path to the spp.xsd file for hs20-osu-client
instead of requiring this to be spp.xsd in the current working
directory.

Signed-off-by: Ben Greear <greearb@candelatech.com>
2015-04-01 20:33:28 +03:00
Ben Greear
97c9991c5b HS 2.0R2: Add more debugging messages to hs20-osu-client
Helps to figure out why some errors happen.

Signed-off-by: Ben Greear <greearb@candelatech.com>
2015-04-01 20:33:25 +03:00
Ben Greear
93c2e60b36 HS 2.0R2 CA: Improve setup.sh and .conf for more flexibility
This gives more flexibility when generating keys so that users do not
have to edit files to generate their own specific keys.

Update HS 2.0 OSU server notes as well.

Signed-off-by: Ben Greear <greearb@candelatech.com>
2015-04-01 20:33:23 +03:00