An invalid authentication sequence could result in the hostapd process terminating due to missing state validation steps when processing the SAE confirm message when in hostapd/AP mode. All version of hostapd with SAE support are vulnerable. An attacker may force the hostapd process to terminate, performing a denial of service attack. Both hostapd with SAE support and wpa_supplicant with SAE support prior to and including version 2.7 are affected.

An update of the wpa_supplicant package has been released.

According to the versions of the wpa_supplicant package installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - A vulnerability was discovered in how p2p/p2p_pd.c in     wpa_supplicant before 2.10 processes P2P (Wi-Fi Direct)     provision discovery requests. It could result in denial     of service or other impact (potentially execution of     arbitrary code), for an attacker within radio     range.(CVE-2021-27803)

  - An invalid authentication sequence could result in the     hostapd process terminating due to missing state     validation steps when processing the SAE confirm     message when in hostapd/AP mode. All version of hostapd     with SAE support are vulnerable. An attacker may force     the hostapd process to terminate, performing a denial     of service attack. Both hostapd with SAE support and     wpa_supplicant with SAE support prior to and including     version 2.7 are affected.(CVE-2019-9496)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

According to the versions of the wpa_supplicant package installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities :

  - The implementations of SAE in hostapd and     wpa_supplicant are vulnerable to side channel attacks     as a result of observable timing differences and cache     access patterns. An attacker may be able to gain leaked     information from a side channel attack that can be used     for full password recovery. Both hostapd with SAE     support and wpa_supplicant with SAE support prior to     and including version 2.7 are affected.(CVE-2019-9494)

  - An invalid authentication sequence could result in the     hostapd process terminating due to missing state     validation steps when processing the SAE confirm     message when in hostapd/AP mode. All version of hostapd     with SAE support are vulnerable. An attacker may force     the hostapd process to terminate, performing a denial     of service attack. Both hostapd with SAE support and     wpa_supplicant with SAE support prior to and including     version 2.7 are affected.(CVE-2019-9496)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

This update for hostapd fixes the following issues :

hostapd was updated to version 2.9 :

  - SAE changes

  - disable use of groups using Brainpool curves

  - improved protection against side channel attacks     [https://w1.fi/security/2019-6/]

  - EAP-pwd changes

  - disable use of groups using Brainpool curves

  - improved protection against side channel attacks     [https://w1.fi/security/2019-6/]

  - fixed FT-EAP initial mobility domain association using     PMKSA caching

  - added configuration of airtime policy

  - fixed FILS to and RSNE into (Re)Association Response     frames

  - fixed DPP bootstrapping URI parser of channel list

  - added support for regulatory WMM limitation (for ETSI)

  - added support for MACsec Key Agreement using IEEE     802.1X/PSK

  - added experimental support for EAP-TEAP server (RFC     7170)

  - added experimental support for EAP-TLS server with TLS     v1.3

  - added support for two server certificates/keys (RSA/ECC)

  - added AKMSuiteSelector into 'STA <addr>' control     interface data to determine with AKM was used for an     association

  - added eap_sim_id parameter to allow EAP-SIM/AKA server     pseudonym and fast reauthentication use to be disabled

  - fixed an ECDH operation corner case with OpenSSL

Update to version 2.8

  - SAE changes

  - added support for SAE Password Identifier

  - changed default configuration to enable only group 19     (i.e., disable groups 20, 21, 25, 26 from default     configuration) and disable all unsuitable groups     completely based on REVmd changes

  - improved anti-clogging token mechanism and SAE     authentication frame processing during heavy CPU load;
    this mitigates some issues with potential DoS attacks     trying to flood an AP with large number of SAE messages

  - added Finite Cyclic Group field in status code 77     responses

  - reject use of unsuitable groups based on new     implementation guidance in REVmd (allow only FFC groups     with prime >= 3072 bits and ECC groups with prime >=     256)

  - minimize timing and memory use differences in PWE     derivation [https://w1.fi/security/2019-1/]     (CVE-2019-9494)

  - fixed confirm message validation in error cases     [https://w1.fi/security/2019-3/] (CVE-2019-9496)

  - EAP-pwd changes

  - minimize timing and memory use differences in PWE     derivation [https://w1.fi/security/2019-2/]     (CVE-2019-9495)

  - verify peer scalar/element     [https://w1.fi/security/2019-4/] (CVE-2019-9497 and     CVE-2019-9498)

  - fix message reassembly issue with unexpected fragment     [https://w1.fi/security/2019-5/]

  - enforce rand,mask generation rules more strictly

  - fix a memory leak in PWE derivation

  - disallow ECC groups with a prime under 256 bits (groups     25, 26, and 27)

  - Hotspot 2.0 changes

  - added support for release number 3

  - reject release 2 or newer association without PMF

  - added support for RSN operating channel validation     (CONFIG_OCV=y and configuration parameter ocv=1)

  - added Multi-AP protocol support

  - added FTM responder configuration

  - fixed build with LibreSSL

  - added FT/RRB workaround for short Ethernet frame padding

  - fixed KEK2 derivation for FILS+FT

  - added RSSI-based association rejection from OCE

  - extended beacon reporting functionality

  - VLAN changes

  - allow local VLAN management with remote RADIUS     authentication

  - add WPA/WPA2 passphrase/PSK -based VLAN assignment

  - OpenSSL: allow systemwide policies to be overridden

  - extended PEAP to derive EMSK to enable use with ERP/FILS

  - extended WPS to allow SAE configuration to be added     automatically for PSK (wps_cred_add_sae=1)

  - fixed FT and SA Query Action frame with     AP-MLME-in-driver cases

  - OWE: allow Diffie-Hellman Parameter element to be     included with DPP in preparation for DPP protocol     extension

  - RADIUS server: started to accept ERP keyName-NAI as user     identity automatically without matching EAP database     entry

  - fixed PTK rekeying with FILS and FT

wpa_supplicant :

  - SAE changes

  - added support for SAE Password Identifier

  - changed default configuration to enable only groups 19,     20, 21 (i.e., disable groups 25 and 26) and disable all     unsuitable groups completely based on REVmd changes

  - do not regenerate PWE unnecessarily when the AP uses the     anti-clogging token mechanisms

  - fixed some association cases where both SAE and FT-SAE     were enabled on both the station and the selected AP

  - started to prefer FT-SAE over SAE AKM if both are     enabled

  - started to prefer FT-SAE over FT-PSK if both are enabled

  - fixed FT-SAE when SAE PMKSA caching is used

  - reject use of unsuitable groups based on new     implementation guidance in REVmd (allow only FFC groups     with prime >= 3072 bits and ECC groups with prime >=     256)

  - minimize timing and memory use differences in PWE     derivation [https://w1.fi/security/2019-1/]     (CVE-2019-9494)

  - EAP-pwd changes

  - minimize timing and memory use differences in PWE     derivation [https://w1.fi/security/2019-2/]     (CVE-2019-9495)

  - verify server scalar/element     [https://w1.fi/security/2019-4/] (CVE-2019-9499)

  - fix message reassembly issue with unexpected fragment     [https://w1.fi/security/2019-5/]

  - enforce rand,mask generation rules more strictly

  - fix a memory leak in PWE derivation

  - disallow ECC groups with a prime under 256 bits (groups     25, 26, and 27)

  - fixed CONFIG_IEEE80211R=y (FT) build without     CONFIG_FILS=y

  - Hotspot 2.0 changes

  - do not indicate release number that is higher than the     one AP supports

  - added support for release number 3

  - enable PMF automatically for network profiles created     from credentials

  - fixed OWE network profile saving

  - fixed DPP network profile saving

  - added support for RSN operating channel validation     (CONFIG_OCV=y and network profile parameter ocv=1)

  - added Multi-AP backhaul STA support

  - fixed build with LibreSSL

  - number of MKA/MACsec fixes and extensions

  - extended domain_match and domain_suffix_match to allow     list of values

  - fixed dNSName matching in domain_match and     domain_suffix_match when using wolfSSL

  - started to prefer FT-EAP-SHA384 over WPA-EAP-SUITE-B-192     AKM if both are enabled

  - extended nl80211 Connect and external authentication to     support SAE, FT-SAE, FT-EAP-SHA384

  - fixed KEK2 derivation for FILS+FT

  - extended client_cert file to allow loading of a chain of     PEM encoded certificates

  - extended beacon reporting functionality

  - extended D-Bus interface with number of new properties

  - fixed a regression in FT-over-DS with mac80211-based     drivers

  - OpenSSL: allow systemwide policies to be overridden

  - extended driver flags indication for separate 802.1X and     PSK 4-way handshake offload capability

  - added support for random P2P Device/Interface Address     use

  - extended PEAP to derive EMSK to enable use with ERP/FILS

  - extended WPS to allow SAE configuration to be added     automatically for PSK (wps_cred_add_sae=1)

  - removed support for the old D-Bus interface     (CONFIG_CTRL_IFACE_DBUS)

  - extended domain_match and domain_suffix_match to allow     list of values

  - added a RSN workaround for misbehaving PMF APs that     advertise IGTK/BIP KeyID using incorrect byte order

  - fixed PTK rekeying with FILS and FT

  - Enabled CLI editing and history support.

Update to version 2.7

  - fixed WPA packet number reuse with replayed messages and     key reinstallation [http://w1.fi/security/2017-1/]     (CVE-2017-13082) (boo#1056061)

  - added support for FILS (IEEE 802.11ai) shared key     authentication

  - added support for OWE (Opportunistic Wireless     Encryption, RFC 8110; and transition mode defined by     WFA)

  - added support for DPP (Wi-Fi Device Provisioning     Protocol)

  - FT :

  - added local generation of PMK-R0/PMK-R1 for FT-PSK     (ft_psk_generate_local=1)

  - replaced inter-AP protocol with a cleaner design that is     more easily extensible; this breaks backward     compatibility and requires all APs in the ESS to be     updated at the same time to maintain FT functionality

  - added support for wildcard R0KH/R1KH

  - replaced r0_key_lifetime (minutes) parameter with     ft_r0_key_lifetime (seconds)

  - fixed wpa_psk_file use for FT-PSK

  - fixed FT-SAE PMKID matching

  - added expiration to PMK-R0 and PMK-R1 cache

  - added IEEE VLAN support (including tagged VLANs)

  - added support for SHA384 based AKM

  - SAE

  - fixed some PMKSA caching cases with SAE

  - added support for configuring SAE password separately of     the WPA2 PSK/passphrase

  - added option to require MFP for SAE associations     (sae_require_pmf=1)

  - fixed PTK and EAPOL-Key integrity and key-wrap algorithm     selection for SAE; note: this is not backwards     compatible, i.e., both the AP and station side     implementations will need to be update at the same time     to maintain interoperability

  - added support for Password Identifier

  - hostapd_cli: added support for command history and     completion

  - added support for requesting beacon report

  - large number of other fixes, cleanup, and extensions

  - added option to configure EAPOL-Key retry limits     (wpa_group_update_count and wpa_pairwise_update_count)

  - removed all PeerKey functionality

  - fixed nl80211 AP mode configuration regression with     Linux 4.15 and newer

  - added support for using wolfSSL cryptographic library

  - fixed some 20/40 MHz coexistence cases where the BSS     could drop to 20 MHz even when 40 MHz would be allowed

  - Hotspot 2.0

  - added support for setting Venue URL ANQP-element     (venue_url)

  - added support for advertising Hotspot 2.0 operator icons

  - added support for Roaming Consortium Selection element

  - added support for Terms and Conditions

  - added support for OSEN connection in a shared RSN BSS

  - added support for using OpenSSL 1.1.1

  - added EAP-pwd server support for salted passwords

According to the versions of the wpa_supplicant package installed, the EulerOS Virtualization for ARM 64 installation on the remote host is affected by the following vulnerabilities :

  - The implementations of SAE in hostapd and     wpa_supplicant are vulnerable to side channel attacks     as a result of observable timing differences and cache     access patterns. An attacker may be able to gain leaked     information from a side channel attack that can be used     for full password recovery. Both hostapd with SAE     support and wpa_supplicant with SAE support prior to     and including version 2.7 are affected.(CVE-2019-9494)

  - An invalid authentication sequence could result in the     hostapd process terminating due to missing state     validation steps when processing the SAE confirm     message when in hostapd/AP mode. All version of hostapd     with SAE support are vulnerable. An attacker may force     the hostapd process to terminate, performing a denial     of service attack. Both hostapd with SAE support and     wpa_supplicant with SAE support prior to and including     version 2.7 are affected.(CVE-2019-9496)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

According to the versions of the wpa_supplicant package installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - The implementations of SAE in hostapd and     wpa_supplicant are vulnerable to side channel attacks     as a result of observable timing differences and cache     access patterns. An attacker may be able to gain leaked     information from a side channel attack that can be used     for full password recovery. Both hostapd with SAE     support and wpa_supplicant with SAE support prior to     and including version 2.7 are affected.(CVE-2019-9494)

  - An invalid authentication sequence could result in the     hostapd process terminating due to missing state     validation steps when processing the SAE confirm     message when in hostapd/AP mode. All version of hostapd     with SAE support are vulnerable. An attacker may force     the hostapd process to terminate, performing a denial     of service attack. Both hostapd with SAE support and     wpa_supplicant with SAE support prior to and including     version 2.7 are affected.(CVE-2019-9496)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Update to version 2.7 from upstream Security fix for CVE-2019-9494 (cache attack against SAE) Security fix for CVE-2019-9495 (cache attack against EAP-pwd) Security fix for CVE-2019-9496 (SAE confirm missing state validation in hostapd/AP) Security fix for CVE-2019-9497 (EAP-pwd server not checking for reflection attack) Security fix for CVE-2019-9498 (EAP-pwd server missing commit validation for scalar/element) Security fix for CVE-2019-9499 (EAP-pwd peer missing commit validation for scalar/element)

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website.
Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

include fix for :

CVE-2019-9494 CVE-2019-9495 CVE-2019-9496 CVE-2019-9497 CVE-2019-9498

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website.
Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

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.

See https://w1.fi/security/2019-3/sae-confirm-missing-state-validation.txt for a detailed description of the bug. Impact : All hostapd versions with SAE support (CONFIG_SAE=y in the build configuration and SAE being enabled in the runtime configuration).

ID	Name	Product	Family	Severity
202820	Photon OS 3.0: Wpa_Supplicant PHSA-2019-3.0-0011	Nessus	PhotonOS Local Security Checks	high
149192	EulerOS 2.0 SP3 : wpa_supplicant (EulerOS-SA-2021-1860)	Nessus	Huawei Local Security Checks	high
137982	EulerOS Virtualization 3.0.6.0 : wpa_supplicant (EulerOS-SA-2020-1763)	Nessus	Huawei Local Security Checks	medium
133758	openSUSE Security Update : hostapd (openSUSE-2020-222) (KRACK)	Nessus	SuSE Local Security Checks	high
128948	EulerOS Virtualization for ARM 64 3.0.2.0 : wpa_supplicant (EulerOS-SA-2019-1945)	Nessus	Huawei Local Security Checks	medium
128814	EulerOS 2.0 SP5 : wpa_supplicant (EulerOS-SA-2019-1891)	Nessus	Huawei Local Security Checks	medium
124554	Fedora 30 : hostapd (2019-eba1109acd)	Nessus	Fedora Local Security Checks	high
124539	Fedora 30 : 1:wpa_supplicant (2019-ca49dfd42f)	Nessus	Fedora Local Security Checks	high
124252	Fedora 29 : hostapd (2019-f409af9fbe)	Nessus	Fedora Local Security Checks	high
124250	Fedora 28 : hostapd (2019-d03bae77f5)	Nessus	Fedora Local Security Checks	high
124223	FreeBSD : FreeBSD -- SAE confirm missing state validation (98b71436-656d-11e9-8e67-206a8a720317)	Nessus	FreeBSD Local Security Checks	high

Detections

Analytics

CVE-2019-9496

high

Tenable Plugins

high

high

medium

high

medium

medium

high

high

high

high

high