Commit Graph

131 Commits (167028b750028ae3dac24f5ff96bbb1ba04e8bd7)

Author SHA1 Message Date
Hauke Mehrtens 167028b750 hostapd: Update to version 2.9 (2019-08-08)
The size of the ipkgs increase a bit (between 0.7% and 1.1%):

old 2019-04-21 (2.8):
288264 wpad-basic_2019-04-21-63962824-1_mipsel_24kc.ipk
256188 wpad-mini_2019-04-21-63962824-1_mipsel_24kc.ipk
427475 wpad-openssl_2019-04-21-63962824-1_mipsel_24kc.ipk
423071 wpad-wolfssl_2019-04-21-63962824-1_mipsel_24kc.ipk

new 2019-08-08 (2.9):
290217 wpad-basic_2019-08-08-ca8c2bd2-1_mipsel_24kc.ipk
258745 wpad-mini_2019-08-08-ca8c2bd2-1_mipsel_24kc.ipk
431732 wpad-openssl_2019-08-08-ca8c2bd2-1_mipsel_24kc.ipk
427641 wpad-wolfssl_2019-08-08-ca8c2bd2-1_mipsel_24kc.ipk

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
5 years ago
Hauke Mehrtens 8af79550e6 hostapd: Update to version 2.8 (2019-04-21)
This also syncs the configuration files with the default configuration
files, but no extra options are activated or deactivated.

The mesh patches were partially merged into hostapd 2.8, the remaining
patches were extracted from patchwork and are now applied by OpenWrt.
The patches still have open questions which are not fixed by the author.
They were taken from this page:
https://patchwork.ozlabs.org/project/hostap/list/?series=62725&state=*

The changes in 007-mesh-apply-channel-attributes-before-running-Mesh.patch
where first applied to hostapd, but later reverted in hostapd commit
3e949655ccc5 because they caused memory leaks.

The size of the ipkgs increase a bit (between 1.3% and 2.3%):

old 2018-12-02 (2.7):
283337 wpad-basic_2018-12-02-c2c6c01b-11_mipsel_24kc.ipk
252857 wpad-mini_2018-12-02-c2c6c01b-11_mipsel_24kc.ipk
417473 wpad-openssl_2018-12-02-c2c6c01b-11_mipsel_24kc.ipk
415105 wpad-wolfssl_2018-12-02-c2c6c01b-11_mipsel_24kc.ipk

new 2019-04-21 (2.8):
288264 wpad-basic_2019-04-21-63962824-1_mipsel_24kc.ipk
256188 wpad-mini_2019-04-21-63962824-1_mipsel_24kc.ipk
427475 wpad-openssl_2019-04-21-63962824-1_mipsel_24kc.ipk
423071 wpad-wolfssl_2019-04-21-63962824-1_mipsel_24kc.ipk

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Tested-by: Stefan Lippers-Hollmann <s.l-h@gmx.de>
5 years ago
Hauke Mehrtens a6981604b3 hostapd: Fix AP mode PMF disconnection protection bypass
This fixes
* CVE-2019-16275 AP mode PMF disconnection protection bypass
https://w1.fi/security/2019-7/ap-mode-pmf-disconnection-protection-bypass.txt

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
5 years ago
Leon M. George f974f8213b hostapd: declare struct wpa_bss early
wps_supplicant.h assumes that 'struct wpa_bss' is forward declared if
CONFIG_WPS is not defined.  With the later inclusion of
600-ubus_support, the issue manifests in warnings like these:

wps_supplicant.h:113:15: warning: 'struct wpa_bss' declared inside parameter list will not be visible outside of this definition or declaration
        struct wpa_bss *bss)
               ^~~~~~~

This patch forward declares 'struct wpa_bss' regardless.

Signed-off-by: Leon M. George <leon@georgemail.eu>
[commit message facelift]
Signed-off-by: Petr Štetiar <ynezz@true.cz>
5 years ago
Leon M. George a123df2758 hostapd: revert signature change in patch
The original wpa_hexdump uses a 'void *' for the payload.  With patch
410-limit_debug_messages, the signature changes and compiler warnings
occur at various places.  One such warning is:

 wpa_debug.h:106:20: note: expected 'const u8 * {aka const unsigned char *}' but argument is of type 'struct wpa_eapol_key *'

Signed-off-by: Leon M. George <leon@georgemail.eu>
[commit message facelift]
Signed-off-by: Petr Štetiar <ynezz@true.cz>
5 years ago
Hauke Mehrtens 7bed9bf10f hostapd: SAE/EAP-pwd side-channel attack update
Fixes this security problem:
* SAE/EAP-pwd side-channel attack update
https://w1.fi/security/2019-6/sae-eap-pwd-side-channel-attack-update.txt

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
5 years ago
Hauke Mehrtens 9f34bf51d6 hostapd: Fix security problem
This fixes:
CVE-2019-11555 "EAP-pwd message reassembly issue with unexpected fragment"
https://w1.fi/security/2019-5/eap-pwd-message-reassembly-issue-with-unexpected-fragment.txt

This shouöld not affect OpenWrt in the default settings as we do not use
EAP-pwd.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
5 years ago
Stefan Lippers-Hollmann 8f17c019a1 hostapd: fix CVE-2019-9497, CVE-2019-9498, CVE-2019-9499
EAP-pwd missing commit validation

Published: April 10, 2019
Identifiers:
- CVE-2019-9497 (EAP-pwd server not checking for reflection attack)
- CVE-2019-9498 (EAP-pwd server missing commit validation for
  scalar/element)
- CVE-2019-9499 (EAP-pwd peer missing commit validation for
  scalar/element)

Latest version available from: https://w1.fi/security/2019-4/

Vulnerability

EAP-pwd implementation in hostapd (EAP server) and wpa_supplicant (EAP
peer) was discovered not to validate the received scalar and element
values in EAP-pwd-Commit messages properly. This could result in attacks
that would be able to complete EAP-pwd authentication exchange without
the attacker having to know the used password.

A reflection attack is possible against the EAP-pwd server since the
hostapd EAP server did not verify that the EAP-pwd-Commit contains
scalar/element values that differ from the ones the server sent out
itself. This allows the attacker to complete EAP-pwd authentication
without knowing the password, but this does not result in the attacker
being able to derive the session key (MSK), i.e., the attacker would not
be able to complete the following key exchange (e.g., 4-way handshake in
RSN/WPA).

An attack using invalid scalar/element values is possible against both
the EAP-pwd server and peer since hostapd and wpa_supplicant did not
validate these values in the received EAP-pwd-Commit messages. If the
used crypto library does not implement additional checks for the element
(EC point), this could result in attacks where the attacker could use a
specially crafted commit message values to manipulate the exchange to
result in deriving a session key value from a very small set of possible
values. This could further be used to attack the EAP-pwd server in a
practical manner. An attack against the EAP-pwd peer is slightly more
complex, but still consider practical. These invalid scalar/element
attacks could result in the attacker being able to complete
authentication and learn the session key and MSK to allow the key
exchange to be completed as well, i.e., the attacker gaining access to
the network in case of the attack against the EAP server or the attacker
being able to operate a rogue AP in case of the attack against the EAP
peer.

While similar attacks might be applicable against SAE, it should be
noted that the SAE implementation in hostapd and wpa_supplicant does
have the validation steps that were missing from the EAP-pwd
implementation and as such, these attacks do not apply to the current
SAE implementation. Old versions of wpa_supplicant/hostapd did not
include the reflection attack check in the SAE implementation, though,
since that was added in June 2015 for v2.5 (commit 6a58444d27fd 'SAE:
Verify that own/peer commit-scalar and COMMIT-ELEMENT are different').

Vulnerable versions/configurations

All hostapd versions with EAP-pwd support (CONFIG_EAP_PWD=y in the build
configuration and EAP-pwd being enabled in the runtime configuration)
are vulnerable against the reflection attack.

All wpa_supplicant and hostapd versions with EAP-pwd support
(CONFIG_EAP_PWD=y in the build configuration and EAP-pwd being enabled
in the runtime configuration) are vulnerable against the invalid
scalar/element attack when built against a crypto library that does not
have an explicit validation step on imported EC points. The following
list indicates which cases are vulnerable/not vulnerable:
- OpenSSL v1.0.2 or older: vulnerable
- OpenSSL v1.1.0 or newer: not vulnerable
- BoringSSL with commit 38feb990a183 ('Require that EC points are on the
  curve.') from September 2015: not vulnerable
- BoringSSL without commit 38feb990a183: vulnerable
- LibreSSL: vulnerable
- wolfssl: vulnerable

Acknowledgments

Thanks to Mathy Vanhoef (New York University Abu Dhabi) for discovering
and reporting the issues and for proposing changes to address them in
the implementation.

Possible mitigation steps

- Merge the following commits to wpa_supplicant/hostapd and rebuild:

  CVE-2019-9497:
  EAP-pwd server: Detect reflection attacks

  CVE-2019-9498:
  EAP-pwd server: Verify received scalar and element
  EAP-pwd: Check element x,y coordinates explicitly

  CVE-2019-9499:
  EAP-pwd client: Verify received scalar and element
  EAP-pwd: Check element x,y coordinates explicitly

  These patches are available from https://w1.fi/security/2019-4/

- Update to wpa_supplicant/hostapd v2.8 or newer, once available

Signed-off-by: Stefan Lippers-Hollmann <s.l-h@gmx.de>
[bump PKG_RELEASE]
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
5 years ago
Stefan Lippers-Hollmann 57ab9e3add hostapd: fix CVE-2019-9496
hostapd: fix SAE confirm missing state validation

Published: April 10, 2019
Identifiers:
- CVE-2019-9496 (SAE confirm missing state validation in hostapd/AP)
Latest version available from: https://w1.fi/security/2019-3/

Vulnerability

When hostapd is used to operate an access point with SAE (Simultaneous
Authentication of Equals; also known as WPA3-Personal), an invalid
authentication sequence could result in the hostapd process terminating
due to a NULL pointer dereference when processing SAE confirm
message. This was caused by missing state validation steps when
processing the SAE confirm message in hostapd/AP mode.

Similar cases against the wpa_supplicant SAE station implementation had
already been tested by the hwsim test cases, but those sequences did not
trigger this specific code path in AP mode which is why the issue was
not discovered earlier.

An attacker in radio range of an access point using hostapd in SAE
configuration could use this issue to perform a denial of service attack
by forcing the hostapd process to terminate.

Vulnerable versions/configurations

All hostapd versions with SAE support (CONFIG_SAE=y in the build
configuration and SAE being enabled in the runtime configuration).

Possible mitigation steps

- Merge the following commit to hostapd and rebuild:

  SAE: Fix confirm message validation in error cases

  These patches are available from https://w1.fi/security/2019-3/

- Update to hostapd v2.8 or newer, once available

Signed-off-by: Stefan Lippers-Hollmann <s.l-h@gmx.de>
[bump PKG_RELEASE]
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
5 years ago
Stefan Lippers-Hollmann 262229e924 hostapd: fix CVE-2019-9495
EAP-pwd side-channel attack

Published: April 10, 2019
Identifiers:
- CVE-2019-9495 (cache attack against EAP-pwd)
Latest version available from: https://w1.fi/security/2019-2/

Vulnerability

Number of potential side channel attacks were recently discovered in the
SAE implementations used by both hostapd and wpa_supplicant (see
security advisory 2019-1 and VU#871675). EAP-pwd uses a similar design
for deriving PWE from the password and while a specific attack against
EAP-pwd is not yet known to be tested, there is no reason to believe
that the EAP-pwd implementation would be immune against the type of
cache attack that was identified for the SAE implementation. Since the
EAP-pwd implementation in hostapd (EAP server) and wpa_supplicant (EAP
peer) does not support MODP groups, the timing attack described against
SAE is not applicable for the EAP-pwd implementation.

A novel cache-based attack against SAE handshake would likely be
applicable against the EAP-pwd implementation. Even though the
wpa_supplicant/hostapd PWE derivation iteration for EAP-pwd has
protections against timing attacks, this new cache-based attack might
enable an attacker to determine which code branch is taken in the
iteration if the attacker is able to run unprivileged code on the victim
machine (e.g., an app installed on a smart phone or potentially a
JavaScript code on a web site loaded by a web browser). This depends on
the used CPU not providing sufficient protection to prevent unprivileged
applications from observing memory access patterns through the shared
cache (which is the most likely case with today's designs).

The attacker could use information about the selected branch to learn
information about the password and combine this information from number
of handshake instances with an offline dictionary attack. With
sufficient number of handshakes and sufficiently weak password, this
might result in full recovery of the used password if that password is
not strong enough to protect against dictionary attacks.

This attack requires the attacker to be able to run a program on the
target device. This is not commonly the case on an authentication server
(EAP server), so the most likely target for this would be a client
device using EAP-pwd.

The commits listed in the end of this advisory change the EAP-pwd
implementation shared by hostapd and wpa_supplicant to perform the PWE
derivation loop using operations that use constant time and memory
access pattern to minimize the externally observable differences from
operations that depend on the password even for the case where the
attacker might be able to run unprivileged code on the same device.

Vulnerable versions/configurations

All wpa_supplicant and hostapd versions with EAP-pwd support
(CONFIG_EAP_PWD=y in the build configuration and EAP-pwd being enabled
in the runtime configuration).

It should also be noted that older versions of wpa_supplicant/hostapd
prior to v2.7 did not include additional protection against certain
timing differences. The definition of the EAP-pwd (RFC 5931) does not
describe such protection, but the same issue that was addressed in SAE
earlier can be applicable against EAP-pwd as well and as such, that
implementation specific extra protection (commit 22ac3dfebf7b, "EAP-pwd:
Mask timing of PWE derivation") is needed to avoid showing externally
visible timing differences that could leak information about the
password. Any uses of older wpa_supplicant/hostapd versions with EAP-pwd
are recommended to update to v2.7 or newer in addition to the mitigation
steps listed below for the more recently discovered issue.

Possible mitigation steps

- Merge the following commits to wpa_supplicant/hostapd and rebuild:

  OpenSSL: Use constant time operations for private bignums
  Add helper functions for constant time operations
  OpenSSL: Use constant time selection for crypto_bignum_legendre()
  EAP-pwd: Use constant time and memory access for finding the PWE

  These patches are available from https://w1.fi/security/2019-2/

- Update to wpa_supplicant/hostapd v2.8 or newer, once available

- Use strong passwords to prevent dictionary attacks

Signed-off-by: Stefan Lippers-Hollmann <s.l-h@gmx.de>
[bump PKG_RELEASE]
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
5 years ago
Stefan Lippers-Hollmann af606d077f hostapd: fix CVE-2019-9494
SAE side-channel attacks

Published: April 10, 2019
Identifiers:
- VU#871675
- CVE-2019-9494 (cache attack against SAE)
Latest version available from: https://w1.fi/security/2019-1/

Vulnerability

Number of potential side channel attacks were discovered in the SAE
implementations used by both hostapd (AP) and wpa_supplicant
(infrastructure BSS station/mesh station). SAE (Simultaneous
Authentication of Equals) is also known as WPA3-Personal. The discovered
side channel attacks may be able to leak information about the used
password based on observable timing differences and cache access
patterns. This might result in full password recovery when combined with
an offline dictionary attack and if the password is not strong enough to
protect against dictionary attacks.

Cache attack

A novel cache-based attack against SAE handshake was discovered. This
attack targets SAE with ECC groups. ECC group 19 being the mandatory
group to support and the most likely used group for SAE today, so this
attack applies to the most common SAE use case. Even though the PWE
derivation iteration in SAE has protections against timing attacks, this
new cache-based attack enables an attacker to determine which code
branch is taken in the iteration if the attacker is able to run
unprivileged code on the victim machine (e.g., an app installed on a
smart phone or potentially a JavaScript code on a web site loaded by a
web browser). This depends on the used CPU not providing sufficient
protection to prevent unprivileged applications from observing memory
access patterns through the shared cache (which is the most likely case
with today's designs).

The attacker can use information about the selected branch to learn
information about the password and combine this information from number
of handshake instances with an offline dictionary attack. With
sufficient number of handshakes and sufficiently weak password, this
might result in full discovery of the used password.

This attack requires the attacker to be able to run a program on the
target device. This is not commonly the case on access points, so the
most likely target for this would be a client device using SAE in an
infrastructure BSS or mesh BSS.

The commits listed in the end of this advisory change the SAE
implementation shared by hostapd and wpa_supplicant to perform the PWE
derivation loop using operations that use constant time and memory
access pattern to minimize the externally observable differences from
operations that depend on the password even for the case where the
attacker might be able to run unprivileged code on the same device.

Timing attack

The timing attack applies to the MODP groups 22, 23, and 24 where the
PWE generation algorithm defined for SAE can have sufficient timing
differences for an attacker to be able to determine how many rounds were
needed to find the PWE based on the used password and MAC
addresses. When the attack is repeated with multiple times, the attacker
may be able to gather enough information about the password to be able
to recover it fully using an offline dictionary attack if the password
is not strong enough to protect against dictionary attacks. This attack
could be performed by an attacker in radio range of an access point or a
station enabling the specific MODP groups.

This timing attack requires the applicable MODP groups to be enabled
explicitly in hostapd/wpa_supplicant configuration (sae_groups
parameter). All versions of hostapd/wpa_supplicant have disabled these
groups by default.

While this security advisory lists couple of commits introducing
additional protection for MODP groups in SAE, it should be noted that
the groups 22, 23, and 24 are not considered strong enough to meet the
current expectation for a secure system. As such, their use is
discouraged even if the additional protection mechanisms in the
implementation are included.

Vulnerable versions/configurations

All wpa_supplicant and hostapd versions with SAE support (CONFIG_SAE=y
in the build configuration and SAE being enabled in the runtime
configuration).

Acknowledgments

Thanks to Mathy Vanhoef (New York University Abu Dhabi) and Eyal Ronen
(Tel Aviv University) for discovering the issues and for discussions on
how to address them.

Possible mitigation steps

- Merge the following commits to wpa_supplicant/hostapd and rebuild:

  OpenSSL: Use constant time operations for private bignums
  Add helper functions for constant time operations
  OpenSSL: Use constant time selection for crypto_bignum_legendre()
  SAE: Minimize timing differences in PWE derivation
  SAE: Avoid branches in is_quadratic_residue_blind()
  SAE: Mask timing of MODP groups 22, 23, 24
  SAE: Use const_time selection for PWE in FFC
  SAE: Use constant time operations in sae_test_pwd_seed_ffc()

  These patches are available from https://w1.fi/security/2019-1/

- Update to wpa_supplicant/hostapd v2.8 or newer, once available

- In addition to either of the above alternatives, disable MODP groups
  1, 2, 5, 22, 23, and 24 by removing them from hostapd/wpa_supplicant
  sae_groups runtime configuration parameter, if they were explicitly
  enabled since those groups are not considered strong enough to meet
  current security expectations. The groups 22, 23, and 24 are related
  to the discovered side channel (timing) attack. The other groups in
  the list are consider too weak to provide sufficient security. Note
  that all these groups have been disabled by default in all
  hostapd/wpa_supplicant versions and these would be used only if
  explicitly enabled in the configuration.

- Use strong passwords to prevent dictionary attacks

Signed-off-by: Stefan Lippers-Hollmann <s.l-h@gmx.de>
[bump PKG_RELEASE]
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
5 years ago
Arnout Vandecappelle (Essensium/Mind) 2e0f41e73a hostapd: add Multi-AP patches and config options
Cherry-pick Multi-AP commits from uptream:
 9c06f0f6a hostapd: Add Multi-AP protocol support
 5abc7823b wpa_supplicant: Add Multi-AP backhaul STA support
 a1debd338 tests: Refactor test_multi_ap
 bfcdac1c8 Multi-AP: Don't reject backhaul STA on fronthaul BSS
 cb3c156e7 tests: Update multi_ap_fronthaul_on_ap to match implementation
 56a2d788f WPS: Add multi_ap_subelem to wps_build_wfa_ext()
 83ebf5586 wpa_supplicant: Support Multi-AP backhaul STA onboarding with WPS
 66819b07b hostapd: Support Multi-AP backhaul STA onboarding with WPS
 8682f384c hostapd: Add README-MULTI-AP
 b1daf498a tests: Multi-AP WPS provisioning

Add support for Multi-AP to the UCI configuration. Every wifi-iface gets
an option 'multi_ap'. For APs, its value can be 0 (multi-AP support
disabled), 1 (backhaul AP), 2 (fronthaul AP), or 3 (fronthaul + backhaul
AP). For STAs, it can be 0 (not a backhaul STA) or 1 (backhaul STA, can
only associate with backhaul AP).

Also add new optional parameter to wps_start ubus call of
wpa_supplicant to indicate that a Multi-AP backhaul link is required.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
5 years ago
Felix Fietkau 5b6997dcb3 hostapd: update the fix for a race condition in mesh new peer handling
Prevent the mesh authentication state machine from getting reset on bogus
new peer discovery

Signed-off-by: Felix Fietkau <nbd@nbd.name>
5 years ago
Felix Fietkau db93949aa3 hostapd: fix race condition in mesh new peer handling
Avoid trying to add the same station to the driver multiple times

Signed-off-by: Felix Fietkau <nbd@nbd.name>
5 years ago
Felix Fietkau 4443804b54 wpa_supplicant: fix calling channel switch via wpa_cli on mesh interfaces
Signed-off-by: Felix Fietkau <nbd@nbd.name>
5 years ago
Felix Fietkau ae6b5815cd hostapd: add support for passing CSA events from sta/mesh to AP interfaces
Fixes handling CSA when using AP+STA or AP+Mesh

Signed-off-by: Felix Fietkau <nbd@nbd.name>
5 years ago
Hauke Mehrtens 99956528df hostapd: update to version 2018-12-02 (2.7)
This updates hostapd to version the git version from 2018-12-02 which
matches the 2.7 release.

The removed patches were are already available in the upstream code, one
additional backport is needed to fix a compile problem.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
5 years ago
Daniel Golle f5753aae23 hostapd: add support for WPS pushbutton station
similar to hostapd, also add a ubus interface for wpa_supplicant
which will allow handling WPS push-button just as it works for hostapd.
In order to have wpa_supplicant running without any network
configuration (so you can use it to retrieve credentials via WPS),
configure wifi-iface in /etc/config/wireless:

  config wifi-iface 'default_radio0'
      option device 'radio0'
      option network 'wwan'
      option mode 'sta'
      option encryption 'wps'

This section will automatically be edited if credentials have
successfully been acquired via WPS.

Size difference (mips_24kc): roughly +4kb for the 'full' variants of
wpa_supplicant and wpad which do support WPS.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
5 years ago
Jo-Philipp Wich 3e633bb370 hostapd: fix MAC filter related log spam
Backport two upstream fixes to address overly verbose logging of MAC ACL
rejection messages.

Fixes: FS#1468
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
6 years ago
Hauke Mehrtens a1ad1144b6 hostapd: SAE: Do not ignore option sae_require_mfp
This patch was send for integration into the hostapd project.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
6 years ago
Hauke Mehrtens 779773a0de hostapd: backport build fix when OWE is activated
This backports a compile fix form the hostapd project.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
6 years ago
Rosen Penev f78e07ad2a hostapd: Fix compile with OpenSSL 1.1.0 + no deprecated APIs
Patch was accepted upsteam:

https://w1.fi/cgit/hostap/commit/?id=373c796948599a509bad71695b5b72eef003f661

Signed-off-by: Rosen Penev <rosenp@gmail.com>
6 years ago
John Crispin 1961948585 wpa_supplicant: fix CVE-2018-14526
Unauthenticated EAPOL-Key decryption in wpa_supplicant

Published: August 8, 2018
Identifiers:
- CVE-2018-14526
Latest version available from: https://w1.fi/security/2018-1/

Vulnerability

A vulnerability was found in how wpa_supplicant processes EAPOL-Key
frames. It is possible for an attacker to modify the frame in a way that
makes wpa_supplicant decrypt the Key Data field without requiring a
valid MIC value in the frame, i.e., without the frame being
authenticated. This has a potential issue in the case where WPA2/RSN
style of EAPOL-Key construction is used with TKIP negotiated as the
pairwise cipher. It should be noted that WPA2 is not supposed to be used
with TKIP as the pairwise cipher. Instead, CCMP is expected to be used
and with that pairwise cipher, this vulnerability is not applicable in
practice.

When TKIP is negotiated as the pairwise cipher, the EAPOL-Key Key Data
field is encrypted using RC4. This vulnerability allows unauthenticated
EAPOL-Key frames to be processed and due to the RC4 design, this makes
it possible for an attacker to modify the plaintext version of the Key
Data field with bitwise XOR operations without knowing the contents.
This can be used to cause a denial of service attack by modifying
GTK/IGTK on the station (without the attacker learning any of the keys)
which would prevent the station from accepting received group-addressed
frames. Furthermore, this might be abused by making wpa_supplicant act
as a decryption oracle to try to recover some of the Key Data payload
(GTK/IGTK) to get knowledge of the group encryption keys.

Full recovery of the group encryption keys requires multiple attempts
(128 connection attempts per octet) and each attempt results in
disconnection due to a failure to complete the 4-way handshake. These
failures can result in the AP/network getting disabled temporarily or
even permanently (requiring user action to re-enable) which may make it
impractical to perform the attack to recover the keys before the AP has
already changes the group keys. By default, wpa_supplicant is enforcing
at minimum a ten second wait time between each failed connection
attempt, i.e., over 20 minutes waiting to recover each octet while
hostapd AP implementation uses 10 minute default for GTK rekeying when
using TKIP. With such timing behavior, practical attack would need large
number of impacted stations to be trying to connect to the same AP to be
able to recover sufficient information from the GTK to be able to
determine the key before it gets changed.

Vulnerable versions/configurations

All wpa_supplicant versions.

Acknowledgments

Thanks to Mathy Vanhoef of the imec-DistriNet research group of KU
Leuven for discovering and reporting this issue.

Possible mitigation steps

- Remove TKIP as an allowed pairwise cipher in RSN/WPA2 networks. This
can be done also on the AP side.

- Merge the following commits to wpa_supplicant and rebuild:

WPA: Ignore unauthenticated encrypted EAPOL-Key data

This patch is available from https://w1.fi/security/2018-1/

- Update to wpa_supplicant v2.7 or newer, once available

Signed-off-by: John Crispin <john@phrozen.org>
6 years ago
Nick Hainke abefb4fda3 hostapd: add ht and vht support in handle event function Add ht and vht capabilities. If a device sends a probe request, the capabilities are added.
Signed-off-by: Nick Hainke <vincent@systemli.org>
6 years ago
Felix Fietkau f0ac9afe69 hostapd: remove unused struct hostapd_ubus_iface
Signed-off-by: Felix Fietkau <nbd@nbd.name>
6 years ago
Felix Fietkau 6dac92a42e hostapd: build with LTO enabled (using jobserver for parallel build)
Signed-off-by: Felix Fietkau <nbd@nbd.name>
6 years ago
Denton Gentry a84962ea35 hostapd: make cli treat UNKNOWN COMMAND as failing
Avoid infinite loop at 100% CPU when running hostapd_cli
if CONFIG_CTRL_IFACE_MIB is not defined.

  _newselect(4, [3], NULL, NULL, ...)
  recvfrom(3, "UNKNOWN COMMAND\n", 4095, 0, NULL, NULL) = 16
  sendto(3, "STA-NEXT UNKNOWN COMMAND", 24, 0, NULL, 0) = 24

Signed-off-by: Denton Gentry <denny@geekhold.com>
6 years ago
Felix Fietkau 23c1827e34 hostapd: add support for client taxonomy in the full config
This can be used to fingerprint clients to try to identify the exact
model

Signed-off-by: Felix Fietkau <nbd@nbd.name>
6 years ago
Daniel Golle 78f1974bc5 hostapd: update packaging and patches
Clean up conflicts/provides/depends hell and add PROVIDES for
eapol-test variants while at it.
Update mesh-DFS patchset from Peter Oh to v5 (with local fixes) which
allows to drop two revert-patches for upstream commits which previously
were necessary to un-break mesh-DFS support.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
6 years ago
Daniel Golle 69f544937f hostapd: update to git HEAD of 2018-05-21, allow build against wolfssl
Support for building wpa_supplicant/hostapd against wolfssl has been
added upstream recently, add build option to allow users using it.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
6 years ago
Sven Eckelmann ba5ec6b77c hostapd: fix VHT80 for encrypted mesh channel settings
The max_oper_chwidth settings was parsed incorrectly for big endian system.
This prevented the system to switch to VHT80 (or VHT160). Instead they were
mapped to:

* HT20:   20MHz
* VHT20:  20MHz
* HT40:   40MHz
* VHT40:  40MHz
* VHT80:  40MHz
* VHT160: 40MHz

This happened because each max_oper_chwidth setting in the config file was
parsed as "0" instead of the actual value.

Fixes: a4322eba2b ("hostapd: fix encrypted mesh channel settings")
Signed-off-by: Sven Eckelmann <sven.eckelmann@openmesh.com>
6 years ago
Daniel Golle 6e0fa4a76d hostapd: fix mesh+AP
Fix encrypted (or DFS) AP+MESH interface combination in a way similar
to how it's done for AP+STA and fix netifd shell script.
Refresh patches while at it.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
6 years ago
Felix Fietkau 3a456683e5 hostapd: fix a mesh mode crash with CONFIG_TAXONOMY enabled
Signed-off-by: Felix Fietkau <nbd@nbd.name>
6 years ago
Daniel Golle a4322eba2b hostapd: fix encrypted mesh channel settings
Import two patches from Peter Oh to allow setting channel
bandwidth in the way it already works for managed interfaces.
This fixes mesh interfaces on 802.11ac devices always coming up in
VHT80 mode.

Add a patch to allow HT40 also on 2.4GHz if noscan option is set, which
also skips secondary channel scan just like noscan works in AP mode.

This time also make sure to add all files to the patch before
committing it...

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
6 years ago
Felix Fietkau 1a89547957 Revert "hostapd: fix encrypted mesh channel settings"
This reverts commit 7f52919a2f, which is
currently breaking the builds and needs to be reworked

Signed-off-by: Felix Fietkau <nbd@nbd.name>
6 years ago
Daniel Golle 7f52919a2f hostapd: fix encrypted mesh channel settings
Import two patches from Peter Oh to allow setting channel
bandwidth in the way it already works for managed interfaces.
This fixes mesh interfaces on 802.11ac devices always coming up in
VHT80 mode.

Add a patch to allow HT40 also on 2.4GHz if noscan option is set, which
also skips secondary channel scan just like noscan works in AP mode.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
6 years ago
Daniel Golle ff8df2b3f9 hostapd: mesh: make forwarding configurable
For unencrypted mesh networks our scripts take care of setting
the various mesh_param values. wpa_supplicant changes somes of them
when being used for SAE encrypted mesh and previously didn't allow
configuring any of them. Add support for setting mesh_fwding (which
has to be set to 0 when using other routing protocols on top of
802.11s) and update our script to pass the value to wpa_supplicant.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
6 years ago
Daniel Golle c52ef396f9 hostapd: fix compile of -mini variants
Fixes commit d88934aa5a (hostapd: update to git snapshot of 2018-04-09)

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
6 years ago
Daniel Golle d88934aa5a hostapd: update to git snapshot of 2018-04-09
And import patchset to allow 802.11s mesh on DFS channels, see also
http://lists.infradead.org/pipermail/hostap/2018-April/038418.html
Fix sae_password for encryption mesh (sent upstream as well).
Also refreshed existing patches and fixed 463-add-mcast_rate-to-11s.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
6 years ago
Daniel Golle eba3b028e4 hostapd: update to git snapshot of 2018-03-26
The following patches were merged upstream:
000-hostapd-Avoid-key-reinstallation-in-FT-handshake.patch
 replaced by commit 0e3bd7ac6
001-Prevent-reinstallation-of-an-already-in-use-group-ke.patch
 replaced by commit cb5132bb3
002-Extend-protection-of-GTK-IGTK-reinstallation-of-WNM-.patch
 replaced by commit 87e2db16b
003-Prevent-installation-of-an-all-zero-TK.patch
 replaced by commit 53bb18cc8
004-Fix-PTK-rekeying-to-generate-a-new-ANonce.patch
 replaced by commit 0adc9b28b
005-TDLS-Reject-TPK-TK-reconfiguration.patch
 replaced by commit ff89af96e
006-WNM-Ignore-WNM-Sleep-Mode-Response-without-pending-r.patch
 replaced by commit adae51f8b
007-FT-Do-not-allow-multiple-Reassociation-Response-fram.patch
 replaced by commit 2a9c5217b
008-WPA-Extra-defense-against-PTK-reinstalls-in-4-way-ha.patch
 replaced by commit a00e946c1
009-Clear-PMK-length-and-check-for-this-when-deriving-PT.patch
 replaced by commit b488a1294
010-Optional-AP-side-workaround-for-key-reinstallation-a.patch
 replaced by commit 6f234c1e2
011-Additional-consistentcy-checks-for-PTK-component-len.patch
 replaced by commit a6ea66530
012-Clear-BSSID-information-in-supplicant-state-machine-.patch
 replaced by commit c0fe5f125
013-WNM-Ignore-WNM-Sleep-Mode-Request-in-wnm_sleep_mode-.patch
 replaced by commit 114f2830d

Some patches had to be modified to work with changed upstream source:
380-disable_ctrl_iface_mib.patch (adding more ifdef'ery)
plus some minor knits needed for other patches to apply which are not
worth being explicitely listed here.

For SAE key management in mesh mode, use the newly introduce
sae_password parameter instead of the psk parameter to also support
SAE keys which would fail the checks applied on the psk field (ie.
length and such). This fixes compatibility issues for users migrating
from authsae.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
6 years ago
Nick Hainke e2681eb06a hostapd: return with 80211 codes in handle event function
If the auth or assoc request was denied the reason
was always WLAN_STATUS_UNSPECIFIED_FAILURE.
That's why for example the wpa supplicant was always
trying to reconnect to the AP.
Now it's possible to give reasoncodes why the auth
or assoc was denied.

Signed-off-by: Nick Hainke <vincent@systemli.org>
6 years ago
Felix Fietkau 6b1816f8a3 hostapd: add support for turning on 802.11k/v features via ubus
Neighbor reports are enabled implicitly on use, beacon reports and BSS
transition management need to be enabled explicitly

Signed-off-by: Felix Fietkau <nbd@nbd.name>
6 years ago
Timo Sigurdsson bd45e15d0a hostapd: backport fix for wnm_sleep_mode=0
wpa_disable_eapol_key_retries can't prevent attacks against the Wireless
Network Management (WNM) Sleep Mode handshake. Currently, hostapd
processes WNM Sleep Mode requests from clients regardless of the setting
wnm_sleep_mode. Backport Jouni Malinen's upstream patch 114f2830 in
order to ignore such requests by clients when wnm_sleep_mode is disabled
(which is the default).

Signed-off-by: Timo Sigurdsson <public_timo.s@silentcreek.de>
[rewrite commit subject (<= 50 characters), bump PKG_RELEASE]
Signed-off-by: Stijn Tintel <stijn@linux-ipv6.be>
7 years ago
Felix Fietkau d91494eedf hostapd: rework frequency/ht/vht selection for ibss/mesh
- Remove obsolete patch chunks regarding fixed_freq
- Instead of patching in custom HT40+/- parameters, use the standard
config syntax as much as possible.
- Use fixed_freq for mesh
- Fix issues with disabling obss scan when using fixed_freq on mesh

Signed-off-by: Felix Fietkau <nbd@nbd.name>
7 years ago
Sven Eckelmann 43f66943d0 hostapd: set mcast_rate in mesh mode
The wpa_supplicant code for IBSS allows to set the mcast rate. It is
recommended to increase this value from 1 or 6 Mbit/s to something higher
when using a mesh protocol on top which uses the multicast packet loss as
indicator for the link quality.

This setting was unfortunately not applied for mesh mode. But it would be
beneficial when wpa_supplicant would behave similar to IBSS mode and set
this argument during mesh join like authsae already does. At least it is
helpful for companies/projects which are currently switching to 802.11s
(without mesh_fwding and with mesh_ttl set to 1) as replacement for IBSS
because newer drivers seem to support 802.11s but not IBSS anymore.

Signed-off-by: Sven Eckelmann <sven.eckelmann@openmesh.com>
Tested-by: Simon Wunderlich <simon.wunderlich@openmesh.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name> [refresh]
7 years ago
Felix Fietkau 46e875a0b0 hostapd: refresh ubus patch
Signed-off-by: Felix Fietkau <nbd@nbd.name>
7 years ago
John Crispin 21e59ee3a2 hostapd: fix up ubus support
Signed-off-by: John Crispin <john@phrozen.org>
7 years ago
Stijn Tintel 2127425434 hostapd: backport extra changes related to KRACK
While these changes are not included in the advisory, upstream
encourages users to merge them.
See http://lists.infradead.org/pipermail/hostap/2017-October/037989.html

Signed-off-by: Stijn Tintel <stijn@linux-ipv6.be>
7 years ago
Felix Fietkau bbda81ce30 hostapd: merge fixes for WPA packet number reuse with replayed messages and key reinstallation
Fixes:
- CERT case ID: VU#228519
- CVE-2017-13077
- CVE-2017-13078
- CVE-2017-13079
- CVE-2017-13080
- CVE-2017-13081
- CVE-2017-13082
- CVE-2017-13086
- CVE-2017-13087
- CVE-2017-13088

For more information see:
https://w1.fi/security/2017-1/wpa-packet-number-reuse-with-replayed-messages.txt

Signed-off-by: Felix Fietkau <nbd@nbd.name>
7 years ago
Koen Vandeputte 2f78034c3e hostapd: update to version 2017-08-24
- Deleted upstreamed patches & parts
- Refreshed all

Compile tested: full-option package + tools (hostapd + wpa_supplicant)
Run-tested: hostapd wpa2 hotspot & wpa_supplicant IBSS link

Targets: cns3xxx

Signed-off-by: Koen Vandeputte <koen.vandeputte@ncentric.com>
7 years ago