Synopsis

Low: wpa_supplicant security and enhancement update

Type/Severity

Security Advisory: Low

Topic

An updated wpa_supplicant package that fixes one security issue and adds
one enhancement is now available for Red Hat Enterprise Linux 6.

Red Hat Product Security has rated this update as having Low security
impact. A Common Vulnerability Scoring System (CVSS) base score, which
gives a detailed severity rating, is available from the CVE link 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.

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)

This update includes 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#1186806)
  

All wpa_supplicant users are advised to upgrade to this updated package,
which contains a backported patch to correct this issue and adds 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

• Red Hat Enterprise Linux Server 6 x86_64
• Red Hat Enterprise Linux Server 6 i386
• Red Hat Enterprise Linux Workstation 6 x86_64
• Red Hat Enterprise Linux Workstation 6 i386
• Red Hat Enterprise Linux Desktop 6 x86_64
• Red Hat Enterprise Linux Desktop 6 i386
• Red Hat Enterprise Linux for IBM z Systems 6 s390x
• Red Hat Enterprise Linux for Power, big endian 6 ppc64
• Red Hat Enterprise Linux for Scientific Computing 6 x86_64
• Red Hat Enterprise Linux Server from RHUI 6 x86_64
• Red Hat Enterprise Linux Server from RHUI 6 i386

Fixes

• BZ - 1221178 - CVE-2015-4142 wpa_supplicant and hostapd: integer underflow in AP mode WMM Action frame processing

CVEs

• CVE-2015-4142

References

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

Red Hat Enterprise Linux Server 6

SRPM
wpa_supplicant-0.7.3-6.el6.src.rpm	SHA-256: 4778167a1fb10a93f8af27d27d0580fac776f2346579219e79ed8ad931358e85
x86_64
wpa_supplicant-0.7.3-6.el6.x86_64.rpm	SHA-256: df61f222360cb163b4c31fe5a9a4c767d208ab1e1377aea1272c91aa993578a9
wpa_supplicant-debuginfo-0.7.3-6.el6.x86_64.rpm	SHA-256: 8aaf3ae901c7e5c220ba280560fe67081decf87a817a109be46ab59e0538c28a
i386
wpa_supplicant-0.7.3-6.el6.i686.rpm	SHA-256: 372d0da1d9a917b09354eafb28a966d442d7a265aa97ee8e49387375d2fb22f7
wpa_supplicant-debuginfo-0.7.3-6.el6.i686.rpm	SHA-256: 3b1dab90362c163097b3a1c5f58110702471e3335b77d18567c5f47cab604bb7

Red Hat Enterprise Linux Workstation 6

SRPM
wpa_supplicant-0.7.3-6.el6.src.rpm	SHA-256: 4778167a1fb10a93f8af27d27d0580fac776f2346579219e79ed8ad931358e85
x86_64
wpa_supplicant-0.7.3-6.el6.x86_64.rpm	SHA-256: df61f222360cb163b4c31fe5a9a4c767d208ab1e1377aea1272c91aa993578a9
wpa_supplicant-debuginfo-0.7.3-6.el6.x86_64.rpm	SHA-256: 8aaf3ae901c7e5c220ba280560fe67081decf87a817a109be46ab59e0538c28a
i386
wpa_supplicant-0.7.3-6.el6.i686.rpm	SHA-256: 372d0da1d9a917b09354eafb28a966d442d7a265aa97ee8e49387375d2fb22f7
wpa_supplicant-debuginfo-0.7.3-6.el6.i686.rpm	SHA-256: 3b1dab90362c163097b3a1c5f58110702471e3335b77d18567c5f47cab604bb7

Red Hat Enterprise Linux Desktop 6

SRPM
wpa_supplicant-0.7.3-6.el6.src.rpm	SHA-256: 4778167a1fb10a93f8af27d27d0580fac776f2346579219e79ed8ad931358e85
x86_64
wpa_supplicant-0.7.3-6.el6.x86_64.rpm	SHA-256: df61f222360cb163b4c31fe5a9a4c767d208ab1e1377aea1272c91aa993578a9
wpa_supplicant-debuginfo-0.7.3-6.el6.x86_64.rpm	SHA-256: 8aaf3ae901c7e5c220ba280560fe67081decf87a817a109be46ab59e0538c28a
i386
wpa_supplicant-0.7.3-6.el6.i686.rpm	SHA-256: 372d0da1d9a917b09354eafb28a966d442d7a265aa97ee8e49387375d2fb22f7
wpa_supplicant-debuginfo-0.7.3-6.el6.i686.rpm	SHA-256: 3b1dab90362c163097b3a1c5f58110702471e3335b77d18567c5f47cab604bb7

Red Hat Enterprise Linux for IBM z Systems 6

SRPM
wpa_supplicant-0.7.3-6.el6.src.rpm	SHA-256: 4778167a1fb10a93f8af27d27d0580fac776f2346579219e79ed8ad931358e85
s390x
wpa_supplicant-0.7.3-6.el6.s390x.rpm	SHA-256: 68cdab2bcd194ecd2d46f5119584d8126a87c94676a521e49921b1337fed2510
wpa_supplicant-debuginfo-0.7.3-6.el6.s390x.rpm	SHA-256: 163d527d93d41184d47f0c9bb109a4716acdad6710fe958a16ac8c5a8269e199

Red Hat Enterprise Linux for Power, big endian 6

SRPM
wpa_supplicant-0.7.3-6.el6.src.rpm	SHA-256: 4778167a1fb10a93f8af27d27d0580fac776f2346579219e79ed8ad931358e85
ppc64
wpa_supplicant-0.7.3-6.el6.ppc64.rpm	SHA-256: 68bd35b3105b992dcf6702a54b1ac20f268b50c691942693f6401f38e3fb890b
wpa_supplicant-debuginfo-0.7.3-6.el6.ppc64.rpm	SHA-256: 64fb0c7ddc88eb8b86a3972a9ac8eeaac9108c749cb7bd883cc9bd0b1a36cdd4

Red Hat Enterprise Linux for Scientific Computing 6

SRPM
wpa_supplicant-0.7.3-6.el6.src.rpm	SHA-256: 4778167a1fb10a93f8af27d27d0580fac776f2346579219e79ed8ad931358e85
x86_64
wpa_supplicant-0.7.3-6.el6.x86_64.rpm	SHA-256: df61f222360cb163b4c31fe5a9a4c767d208ab1e1377aea1272c91aa993578a9
wpa_supplicant-debuginfo-0.7.3-6.el6.x86_64.rpm	SHA-256: 8aaf3ae901c7e5c220ba280560fe67081decf87a817a109be46ab59e0538c28a

Red Hat Enterprise Linux Server from RHUI 6

SRPM
wpa_supplicant-0.7.3-6.el6.src.rpm	SHA-256: 4778167a1fb10a93f8af27d27d0580fac776f2346579219e79ed8ad931358e85
x86_64
wpa_supplicant-0.7.3-6.el6.x86_64.rpm	SHA-256: df61f222360cb163b4c31fe5a9a4c767d208ab1e1377aea1272c91aa993578a9
wpa_supplicant-debuginfo-0.7.3-6.el6.x86_64.rpm	SHA-256: 8aaf3ae901c7e5c220ba280560fe67081decf87a817a109be46ab59e0538c28a
i386
wpa_supplicant-0.7.3-6.el6.i686.rpm	SHA-256: 372d0da1d9a917b09354eafb28a966d442d7a265aa97ee8e49387375d2fb22f7
wpa_supplicant-debuginfo-0.7.3-6.el6.i686.rpm	SHA-256: 3b1dab90362c163097b3a1c5f58110702471e3335b77d18567c5f47cab604bb7