Commit graph

67 commits

Author SHA1 Message Date
Jouni Malinen
6f234c1e2e Optional AP side workaround for key reinstallation attacks
This adds a new hostapd configuration parameter
wpa_disable_eapol_key_retries=1 that can be used to disable
retransmission of EAPOL-Key frames that are used to install
keys (EAPOL-Key message 3/4 and group message 1/2). This is
similar to setting wpa_group_update_count=1 and
wpa_pairwise_update_count=1, but with no impact to message 1/4
retries and with extended timeout for messages 4/4 and group
message 2/2 to avoid causing issues with stations that may use
aggressive power saving have very long time in replying to the
EAPOL-Key messages.

This option can be used to work around key reinstallation attacks
on the station (supplicant) side in cases those station devices
cannot be updated for some reason. By removing the
retransmissions the attacker cannot cause key reinstallation with
a delayed frame transmission. This is related to the station side
vulnerabilities CVE-2017-13077, CVE-2017-13078, CVE-2017-13079,
CVE-2017-13080, and CVE-2017-13081.

This workaround might cause interoperability issues and reduced
robustness of key negotiation especially in environments with
heavy traffic load due to the number of attempts to perform the
key exchange is reduced significantly. As such, this workaround
is disabled by default (unless overridden in build
configuration). To enable this, set the parameter to 1.

It is also possible to enable this in the build by default by
adding the following to the build configuration:

CFLAGS += -DDEFAULT_WPA_DISABLE_EAPOL_KEY_RETRIES=1

Signed-off-by: Jouni Malinen <j@w1.fi>
2017-10-17 00:06:26 +03:00
Jouni Malinen
a0bf1b68c0 Remove all PeerKey functionality
This was originally added to allow the IEEE 802.11 protocol to be
tested, but there are no known fully functional implementations based on
this nor any known deployments of PeerKey functionality. Furthermore,
PeerKey design in the IEEE Std 802.11-2016 standard has already been
marked as obsolete for DLS and it is being considered for complete
removal in REVmd.

This implementation did not really work, so it could not have been used
in practice. For example, key configuration was using incorrect
algorithm values (WPA_CIPHER_* instead of WPA_ALG_*) which resulted in
mapping to an invalid WPA_ALG_* value for the actual driver operation.
As such, the derived key could not have been successfully set for the
link.

Since there are bugs in this implementation and there does not seem to
be any future for the PeerKey design with DLS (TDLS being the future for
DLS), the best approach is to simply delete all this code to simplify
the EAPOL-Key handling design and to get rid of any potential issues if
these code paths were accidentially reachable.

Signed-off-by: Jouni Malinen <j@w1.fi>
2017-10-16 02:03:47 +03:00
Beniamino Galvani
2b9891bd6e OpenSSL: Add build option to select default ciphers
Add a build option to select different default ciphers for OpenSSL
instead of the hardcoded default "DEFAULT:!EXP:!LOW".

This new option is useful on distributions where the security level
should be consistent for all applications, as in Fedora [1]. In such
cases the new configuration option would be set to "" or
"PROFILE=SYSTEM" to select the global crypto policy by default.

[1] https://fedoraproject.org/wiki/Changes/CryptoPolicy

Signed-off-by: Beniamino Galvani <bgalvani@redhat.com>
2017-07-17 11:55:22 +03:00
Jouni Malinen
1764559eef FILS: Add FILS SK auth PFS support in AP mode
This adds an option to configure hostapd to enable use of perfect
forward secrecy option in FILS shared key authentication. A new build
option CONFIG_FILS_SK_PFS=y can be used to include this functionality. A
new runtime configuration parameter fils_dh_group is used to enable this
by specifying which DH group to use. For example, fils_dh_group=19 would
allow FILS SK PFS to be used with a 256-bit random ECP group.

Signed-off-by: Jouni Malinen <j@w1.fi>
2017-03-12 23:20:32 +02:00
Jouni Malinen
6115238492 OWE: Add CONFIG_OWE=y build option
This can be used to enable OWE support in hostapd and wpa_supplicant
builds.

Signed-off-by: Jouni Malinen <j@w1.fi>
2017-03-12 20:43:06 +02:00
Jouni Malinen
206516e8c2 af_alg: Crypto wrappers for Linux kernel crypto (AF_ALG)
CONFIG_TLS=linux can now be used to select the crypto implementation
that uses the user space socket interface (AF_ALG) for the Linux kernel
crypto implementation. This commit includes some of the cipher, hash,
and HMAC functions. The functions that are not available through AF_ALG
(e.g., the actual TLS implementation) use the internal implementation
(CONFIG_TLS=internal).

Signed-off-by: Jouni Malinen <j@w1.fi>
2017-02-28 11:24:15 +02:00
Peng Xu
94380cb40a hostapd: Initial IEEE 802.11ax (HE) definitions
Add IEEE 802.11ax definitions for config, IEEE structures, and
constants. These are still subject to change in the IEEE process.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
2017-02-19 17:37:52 +02:00
Wojciech Dubowik
cc3dae85bd hostapd: Add possibility to send debug messages to syslog
We can only send module specific messages to syslog and not debug
messages printed with wpa_printf. Add an extra command line parameter
'-s' to allow it. The feature is enabled with compile flag
CONFIG_DEBUG_SYSLOG as for wpa_supplicant and behaves in the same manner
as the wpa_supplicant -s command line argument.

Signed-off-by: Wojciech Dubowik <Wojciech.Dubowik@neratec.com>
2017-01-30 00:57:13 +02:00
Mikael Kanstrup
c650f92916 hostapd: Add CONFIG_WPA_CLI_EDIT to defconfig
As hostapd_cli now supports command completion add documentation
of the config option to defconfig. Disabled per default.

Signed-off-by: Mikael Kanstrup <mikael.kanstrup@sonymobile.com>
2016-10-16 11:55:02 +03:00
Jouni Malinen
903ecbe8da FILS: Add hostapd configuration options
This adds CONFIG_FILS=y build configuration option and new key
management options for FILS authentication.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
2016-10-10 21:11:27 +03:00
Denton Gentry
04059ab844 Passive Client Taxonomy
Implement the signature mechanism described in the paper
"Passive Taxonomy of Wifi Clients using MLME Frame Contents"
published by Denton Gentry and Avery Pennarun.

http://research.google.com/pubs/pub45429.html
https://arxiv.org/abs/1608.01725

This involves:
1. Add a CONFIG_TAXONOMY compile option. Enabling taxonomy incurs
   a memory overhead of up to several kilobytes per associated
   station.
2. If enabled, store the Probe Request and (Re)Associate Request frame in
   struct sta_info.
3. Implement code to extract the ID of each Information Element,
   plus selected fields and bitmasks from certain IEs, into a
   descriptive text string. This is done in a new source file,
   src/ap/taxonomy.c.
4. Implement a "signature qq:rr:ss:tt:uu:vv" command
   in hostapd_cli to retrieve the signature.

Signatures take the form of a text string. For example, a signature
for the Nexus 5X is:
  wifi4|probe:0,1,127,45,191,htcap:01ef,htagg:03,htmcs:0000ffff,vhtcap:338061b2,
  vhtrxmcs:030cfffa,vhttxmcs:030cfffa,extcap:00000a0201000040|assoc:0,1,48,45,
  221(0050f2,2),191,127,htcap:01ef,htagg:03,htmcs:0000ffff,vhtcap:339071b2,
  vhtrxmcs:030cfffa,vhttxmcs:030cfffa,extcap:0000000000000040

Signed-off-by: dgentry@google.com (Denton Gentry)
Signed-off-by: denny@geekhold.com (Denton Gentry)
Signed-off-by: rofrankel@google.com (Richard Frankel)
Signed-off-by: richard@frankel.tv (Richard Frankel)
2016-09-22 00:45:24 +03:00
Avraham Stern
fb9a1c3e28 hostapd: Add MBO IE to Beacon, Probe Response, Association Response
Add MBO IE with AP capability attribute to Beacon, Probe Response, and
(Re)Association Response frames to indicate the AP supports MBO.

Add option to add Association Disallowed attribute to Beacon, Probe
Response, and (Re)Association Response frames. Usage:

SET mbo_assoc_disallow <reason code>

Valid reason code values are between 1-5. Setting the reason code to
0 will remove the Association Disallowed attribute from the MBO IE
and will allow new associations.

MBO functionality is enabled by setting "mbo=1" in the config file.

Signed-off-by: Avraham Stern <avraham.stern@intel.com>
2016-02-22 19:53:04 +02:00
Roy Marples
634e2e29d6 Add CONFIG_ELOOP_KQUEUE to defconfig
Signed-off-by: Roy Marples <roy@marples.name>
2016-02-18 17:02:13 +02:00
Jouni Malinen
b658547dd5 nl80211: Add build option for QCA vendor extensions
This allows the binary sizes to be reduced if no support for nl80211
vendor extensions are needed.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
2015-10-01 12:45:27 +03:00
Jouni Malinen
de01710b08 hostapd: Add build options for selecting eloop type
This adds CONFIG_ELOOP_POLL=y and CONFIG_ELOOP_EPOLL=y options to
hostapd build options similarly to how these were implemented for
wpa_supplicant.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
2015-07-23 18:48:41 +03:00
Anton Nayshtut
a8dab08a28 FST: Testing support
This patch introduces infrastructure needed for FST module tests.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
2015-07-16 18:26:16 +03:00
Anton Nayshtut
8cf53ec9f7 FST: Add build rules for hostapd
This patch integrates the FST into the hostapd.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
2015-07-16 18:26:15 +03:00
Jouni Malinen
d3bddd8b84 ERP: Add support for ERP on EAP server and authenticator
Derive rRK and rIK on EAP server if ERP is enabled and use these keys to
allow EAP re-authentication to be used and to derive rMSK.

The new hostapd configuration parameter eap_server_erp=1 can now be used
to configure the integrated EAP server to derive EMSK, rRK, and rIK at
the successful completion of an EAP authentication method. This
functionality is not included in the default build and can be enabled
with CONFIG_ERP=y.

Signed-off-by: Jouni Malinen <j@w1.fi>
2014-12-04 12:16:27 +02:00
Jouni Malinen
01b32d5e36 Remove references to madwifi from various files
Number of documentation and configuration files had references to the
madwifi driver interface that was removed in the previous commit. Remove
these references as well.

Signed-off-by: Jouni Malinen <j@w1.fi>
2014-11-01 16:15:53 +02:00
Jouni Malinen
c201f93a9e WPS: Enable WSC 2.0 support unconditionally
There is not much point in building devices with WPS 1.0 only supported
nowadays. As such, there is not sufficient justification for maintaining
extra complexity for the CONFIG_WPS2 build option either. Remove this by
enabling WSC 2.0 support unconditionally.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
2014-03-25 18:33:21 +02:00
Helmut Schaa
d9dd86be1d hostapd: Enable IEEE 802.11w in defconfig
IEEE 802.11w is ratified since 2009 already, so this comment does not
seem to be valid anymore.

Signed-hostap: Helmut Schaa <helmut.schaa@googlemail.com>
2014-02-14 19:21:42 +02:00
Ben Greear
3043b4f455 nl80211: Document how to configure for libnl 2.0 and 3.2
Reported-by: Xose Vazquez Perez <xose.vazquez@gmail.com>

Signed-hostap: Ben Greear <greearb@candelatech.com>
2014-01-07 15:35:14 +02:00
Jouni Malinen
a1a31b6c3f Remove hostapd dump_file functionality
This debugging mechanism has now been deprecated by the control
interface commands that can be used to fetch same internal information
from hostapd in a more convenient way. Leave the empty USR1 signal
handler and configuration file parameter for backwards compatibility.
They can be removed in future versions of hostapd.

Signed-hostap: Jouni Malinen <j@w1.fi>
2014-01-02 18:15:07 +02:00
Jouni Malinen
70067530b6 Update EAP-FAST note regarding OpenSSL support
This is now supported in the current OpenSSL version.

Signed-hostap: Jouni Malinen <j@w1.fi>
2014-01-02 10:13:11 +02:00
Johannes Berg
0648c3b8f5 hostapd: Add -T Linux tracing option
Just like wpa_supplicant, give hostapd the -T option to
send all debug messages into the Linux tracing buffer.
Enable this option for hwsim test builds by default.

Signed-hostap: Johannes Berg <johannes.berg@intel.com>
2013-10-31 10:47:44 +02:00
Michal Kazior
50f4f2a066 hostapd: Add Automatic Channel Selection (ACS) support
This adds ACS support to hostapd. Currently only survey-based
algorithm is available.

To use ACS you need to enable CONFIG_ACS=y in .config and use
channel=0 (or channel=acs_survey) in hostapd.conf.

For more details see wiki page [1] or comments in src/ap/acs.c.

[1]: http://wireless.kernel.org/en/users/Documentation/acs

Signed-hostap: Michal Kazior <michal.kazior@tieto.com>
2013-08-31 11:51:06 +03:00
Jouni Malinen
fe65847bb1 EAP-EKE: Add server implementation
This adds a new password-based EAP method defined in RFC 6124.

Signed-hostap: Jouni Malinen <j@w1.fi>
2013-07-07 20:30:10 +03:00
Johannes Berg
c2aff6b1d1 hostapd: Add some testing options
In order to test clients in scenarios where APs may (randomly)
drop certain management frames, introduce some testing options
into the hostapd configuration that can make it ignore certain
frames. For now, these are probe requests, authentication and
(re)association frames.

Signed-hostap: Johannes Berg <johannes.berg@intel.com>
2013-04-23 17:51:28 +03:00
Jouni Malinen
ee431d77a5 Add preliminary support for using SQLite for eap_user database
CONFIG_SQLITE=y option can now be used to allow the eap_user_file text
file to be replaced with a SQLite database
(eap_user_file=sqlite:/path/to/sqlite.db). hostapd.eap_user_sqlite
shows an example of how the database tables can be created for this
purpose. This commit does not yet include full functionality of the
text file format, but at least basic EAP-TTLS/MSCHAPv2 style
authentication mechanisms with plaintext passwords can be used for
tests.

Signed-hostap: Jouni Malinen <j@w1.fi>
2012-11-21 00:47:47 +02:00
Jouni Malinen
597d5d1b11 hlr_auc_gw: Add SQLite database support for Milenage information
An SQLite database can now be used to manage the Milenage information
instead of a text file. The new hlr_auc_gw.txt document describes how
this is configured and used.

Signed-hostap: Jouni Malinen <j@w1.fi>
2012-08-19 22:59:30 +03:00
Michael Braun
03a6a2e972 Add option to use netlink to create and remove VLAN interfaces
CONFIG_VLAN_NETLINK=y build option can now be used to replace the
ioctl()-based interface for creating and removing VLAN interfaces
with netlink-based interface.

Signed-hostap: M. Braun <michael-dev@fami-braun.de>
2012-08-10 14:09:05 +03:00
Jay Katabathuni
159c89ab4f HS 2.0: Add configuration for Hotspot 2.0 AP support
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
2012-07-30 18:23:11 +03:00
Mahesh Palivela
efe45d1471 hostapd: Initial IEEE 802.11ac (VHT) definitions
Add IEEE 802.11ac definitions for config, IEEE structures, constants.

Signed-hostap: Mahesh Palivela <maheshp@posedge.com>
2012-06-30 13:52:13 +03:00
Jouni Malinen
51ca03f470 WPS: Document NFC use cases with password/config token
Signed-hostap: Jouni Malinen <j@w1.fi>
2012-06-28 21:28:49 +03:00
Jouni Malinen
b6668734ab WNM: Add advertisement of BSS max idle period
If WNM is enabled for the build (CONFIG_WNM=y), add BSS max idle period
information to the (Re)Association Response frame from the AP and parse
this information on the station. For SME-in-wpa_supplicant case, add a
timer to handle periodic transmission of the keep-alive frame. The
actual request for the driver to transmit a frame is not yet
implemented.

Signed-hostap: Jouni Malinen <j@w1.fi>
2012-05-27 17:35:00 -07:00
Dan Harkins
27c9d333d4 EAP-pwd: Describe build option for EAP-pwd
Signed-hostap: Dan Harkins <dharkins@lounge.org>
2012-02-11 12:17:58 +02:00
Jouni Malinen
ca84eed7ad TLS: Add build configuration for TLS v1.2 support
This allows the internal TLS implementation to be built for TLS v1.2
support. In addition to the build option, this changes the TLS PRF
based on the negotiated version number. Though, this commit does not
yet complete support for TLS v1.2.

Signed-hostap: Jouni Malinen <j@w1.fi>
2011-11-27 21:45:07 +02:00
Jouni Malinen
b83e3e93c8 IEEE 802.11u: Add configuration and advertisement for Interworking 2011-10-16 23:55:34 +03:00
Jouni Malinen
fd2f2d0489 Remove EAP-TTLSv1 and TLS/IA
These protocols seem to be abandoned: latest IETF drafts have expired
years ago and it does not seem likely that EAP-TTLSv1 would be
deployed. The implementation in hostapd/wpa_supplicant was not complete
and not fully tested. In addition, the TLS/IA functionality was only
available when GnuTLS was used. Since GnuTLS removed this functionality
in 3.0.0, there is no available TLS/IA implementation in the latest
version of any supported TLS library.

Remove the EAP-TTLSv1 and TLS/IA implementation to clean up unwanted
complexity from hostapd and wpa_supplicant. In addition, this removes
any potential use of the GnuTLS extra library.
2011-09-25 21:28:32 +03:00
Jouni Malinen
5c47af9a7a TLS: Add support for TLS v1.1 (RFC 4346) with internal TLS
This is disabled by defautl and can be enabled with CONFIG_TLSV11=y
build configuration parameter.
2011-09-25 17:24:46 +03:00
Jouni Malinen
38e24575c1 random: Add support for maintaining internal entropy store over restarts
This can be used to avoid rejection of first two 4-way handshakes every
time hostapd (or wpa_supplicant in AP/IBSS mode) is restarted. A new
command line parameter, -e, can now be used to specify an entropy file
that will be used to maintain the needed state.
2011-05-31 20:07:11 +03:00
Jouni Malinen
5dcfb6830e Include nl80211 driver wrapper in default configuration for hostapd 2011-05-16 21:07:47 +03:00
Jouni Malinen
9d832bd07d Remove obsolete comments about libnl 1.1 being new 2011-02-21 23:41:56 +02:00
Ben Greear
b41a47c03f hostapd: Allow logging to file
Also supports 'relog' CLI command to re-open the log file.

Signed-off-by: Ben Greear <greearb@candelatech.com>
2011-02-06 20:24:16 +02:00
Jouni Malinen
bbb921daaa Maintain internal entropy pool for augmenting random number generation
By default, make hostapd and wpa_supplicant maintain an internal
entropy pool that is fed with following information:

hostapd:
- Probe Request frames (timing, RSSI)
- Association events (timing)
- SNonce from Supplicants

wpa_supplicant:
- Scan results (timing, signal/noise)
- Association events (timing)

The internal pool is used to augment the random numbers generated
with the OS mechanism (os_get_random()). While the internal
implementation is not expected to be very strong due to limited
amount of generic (non-platform specific) information to feed the
pool, this may strengthen key derivation on some devices that are
not configured to provide strong random numbers through
os_get_random() (e.g., /dev/urandom on Linux/BSD).

This new mechanism is not supposed to replace proper OS provided
random number generation mechanism. The OS mechanism needs to be
initialized properly (e.g., hw random number generator,
maintaining entropy pool over reboots, etc.) for any of the
security assumptions to hold.

If the os_get_random() is known to provide strong ramdom data (e.g., on
Linux/BSD, the board in question is known to have reliable source of
random data from /dev/urandom), the internal hostapd random pool can be
disabled. This will save some in binary size and CPU use. However, this
should only be considered for builds that are known to be used on
devices that meet the requirements described above. The internal pool
is disabled by adding CONFIG_NO_RANDOM_POOL=y to the .config file.
2010-11-24 01:29:40 +02:00
Jouni Malinen
1b6dbec626 Fix a typo in the comment 2010-11-10 14:23:57 +02:00
Helmut Schaa
f5798bf36a hostapd: Add comment about CONFIG_FULL_DYNAMIC_VLAN to defconfig
Add comment about CONFIG_FULL_DYNAMIC_VLAN to defconfig. By default
this feature is still disabled.

Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com>
2010-11-09 16:38:59 +02:00
Jouni Malinen
53587ec183 WPS 2.0: Make WSC 2.0 support to be build option (CONFIG_WPS2)
For now, the default build will only include WSC 1.0 support.
CONFIG_WPS2=y can be used to add support for WSC 2.0.
2010-09-09 06:07:48 -07:00
Masashi Honma
953f0f6333 bsd: Add support for WPA_TRACE and WPA_TRACE_BFD
On FreeBSD 8.0, WPA_TRACE and WPA_TRACE_BFD functionality build fails.
2010-01-09 11:01:12 +02:00
Jouni Malinen
96603e4fe1 Comment CONFIG_WPA_TRACE_BFD=y out by default 2009-12-23 23:20:11 +02:00