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Red Hat 6 RHSA-2015:1439-01 Low: wpa_supplicant Buffer Over-read

red hat
Calendar Grey July 22, 2015
Dist Redhat Esm H88
Upgrade wpa_supplicant on Red Hat 6 for better security and enhancements by following these detailed steps for successful installation and monitoring
An updated wpa_supplicant package that fixes one security issue and adds one enhancement is now available for Red Hat Enterprise Linux 6

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

Summary

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.

Topics%20covered

Topics Covered

security advisory security update Red Hat low severity enhancement wpa_supplicant buffer over-read

References

https://access.redhat.com/security/cve/CVE-2015-4142 https://access.redhat.com/security/updates/classification#low

Package List

Red Hat Enterprise Linux Desktop (v. 6):
Source: wpa_supplicant-0.7.3-6.el6.src.rpm
i386: wpa_supplicant-0.7.3-6.el6.i686.rpm wpa_supplicant-debuginfo-0.7.3-6.el6.i686.rpm
x86_64: wpa_supplicant-0.7.3-6.el6.x86_64.rpm wpa_supplicant-debuginfo-0.7.3-6.el6.x86_64.rpm
Red Hat Enterprise Linux HPC Node Optional (v. 6):
Source: wpa_supplicant-0.7.3-6.el6.src.rpm
x86_64: wpa_supplicant-0.7.3-6.el6.x86_64.rpm wpa_supplicant-debuginfo-0.7.3-6.el6.x86_64.rpm
Red Hat Enterprise Linux Server (v. 6):
Source: wpa_supplicant-0.7.3-6.el6.src.rpm
i386: wpa_supplicant-0.7.3-6.el6.i686.rpm wpa_supplicant-debuginfo-0.7.3-6.el6.i686.rpm
ppc64: wpa_supplicant-0.7.3-6.el6.ppc64.rpm wpa_supplicant-debuginfo-0.7.3-6.el6.ppc64.rpm
s390x: wpa_supplicant-0.7.3-6.el6.s390x.rpm wpa_supplicant-debuginfo-0.7.3-6.el6.s390x.rpm
x86_64: wpa_supplicant-0.7.3-6.el6.x86_64.rpm wpa_supplicant-debuginfo-0.7.3-6.el6.x86_64.rpm
Red Hat Enterprise Linux Workstation (v. 6):
Source: wpa_supplicant-0.7.3-6.el6.src.rpm
i386: wpa_supplicant-0.7.3-6.el6.i686.rpm wpa_supplicant-debuginfo-0.7.3-6.el6.i686.rpm
x86_64: wpa_supplicant-0.7.3-6.el6.x86_64.rpm wpa_supplicant-debuginfo-0.7.3-6.el6.x86_64.rpm
These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from

Read the Full Advisory


Severity
low
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2015:1439-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2015:1439.html
Issue date: 2015-07-22
Updated on: 2015-05-27

Topic

An updated wpa_supplicant package that fixes one security issue and addsone enhancement is now available for Red Hat Enterprise Linux 6.Red Hat Product Security has rated this update as having Low securityimpact. A Common Vulnerability Scoring System (CVSS) base score, whichgives a detailed severity rating, is available from the CVE link in theReferences section.

Topics%20covered

Topics Covered

security advisory security update Red Hat low severity enhancement wpa_supplicant buffer over-read

Relevant Releases Architectures

Red Hat Enterprise Linux Desktop (v. 6) - i386, x86_64

Red Hat Enterprise Linux HPC Node Optional (v. 6) - x86_64

Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64

Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64

Bugs Fixed

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

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