Issued:

2015-06-11

Updated:

2015-06-11

RHSA-2015:1090 - Important: wpa_supplicant security and enhancement update

Synopsis

Important: wpa_supplicant security and enhancement update

Type/Severity

Security Advisory Important

Topic

An updated wpa_supplicant package that fixes two security issues and adds one enhancement is now available for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having Important security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.

Description

The wpa_supplicant package contains an 802.1X Supplicant with support for WEP, WPA, WPA2 (IEEE 802.11i / RSN), and various EAP authentication methods. It implements key negotiation with a WPA Authenticator for client stations and controls the roaming and IEEE 802.11 authentication and association of the WLAN driver.

A buffer overflow flaw was found in the way wpa_supplicant handled SSID information in the Wi-Fi Direct / P2P management frames. A specially crafted frame could allow an attacker within Wi-Fi radio range to cause wpa_supplicant to crash or, possibly, execute arbitrary code. (CVE-2015-1863)

An integer underflow flaw, leading to a buffer over-read, was found in the way wpa_supplicant handled WMM Action frames. A specially crafted frame could possibly allow an attacker within Wi-Fi radio range to cause wpa_supplicant to crash. (CVE-2015-4142)

Red Hat would like to thank Jouni Malinen of the wpa_supplicant upstream for reporting the CVE-2015-1863 issue. Upstream acknowledges Alibaba security team as the original reporter.

This update also adds the following enhancement:

• Prior to this update, wpa_supplicant did not provide a way to require the host name to be listed in an X.509 certificate's Common Name or Subject Alternative Name, and only allowed host name suffix or subject substring checks. This update introduces a new configuration directive, 'domain_match', which adds a full host name check. (BZ#1178263)

All wpa_supplicant users are advised to upgrade to this updated package, which contains backported patches to correct these issues and add this enhancement. After installing this update, the wpa_supplicant service will be restarted automatically.

Solution

Before applying this update, make sure all previously released errata relevant to your system have been applied.

For details on how to apply this update, refer to:

https://access.redhat.com/articles/11258

Affected Products

Updated Packages

• wpa_supplicant-2.0-17.el7_1.ppc64.rpm
• wpa_supplicant-2.0-17.el7_1.x86_64.rpm
• wpa_supplicant-debuginfo-2.0-17.el7_1.s390x.rpm
• wpa_supplicant-2.0-17.el7_1.src.rpm
• wpa_supplicant-2.0-17.el7_1.s390x.rpm
• wpa_supplicant-debuginfo-2.0-17.el7_1.ppc64.rpm
• wpa_supplicant-debuginfo-2.0-17.el7_1.x86_64.rpm

Fixes

• This content is not included.BZ - 1178263
• This content is not included.BZ - 1211191
• This content is not included.BZ - 1221178

CVEs

• CVE-2015-4142
• CVE-2015-1863

References

• https://access.redhat.com/security/updates/classification/#important

Additional information

• The Red Hat security contact is This content is not included.secalert@redhat.com. More contact details at https://access.redhat.com/security/team/contact/.
• Offline Security Data data is available for integration with other systems. See Offline Security Data API to get started.