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RHEL 6 : wpa_supplicant (RHSA-2015:1439)

medium Nessus Plugin ID 84947

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Synopsis

The remote Red Hat host is missing one or more security updates.

Description

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.

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

Update the affected wpa_supplicant and / or wpa_supplicant-debuginfo packages.

See Also

https://access.redhat.com/errata/RHSA-2015:1439

https://access.redhat.com/security/cve/cve-2015-4142

Plugin Details

Severity: Medium

ID: 84947

File Name: redhat-RHSA-2015-1439.nasl

Version: 2.9

Type: local

Agent: unix

Published: 7/23/2015

Updated: 2/5/2021

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.7

Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:N/A:P

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:wpa_supplicant, p-cpe:/a:redhat:enterprise_linux:wpa_supplicant-debuginfo, cpe:/o:redhat:enterprise_linux:6

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu

Exploit Ease: No known exploits are available

Patch Publication Date: 7/22/2015

Vulnerability Publication Date: 6/15/2015

Reference Information

CVE: CVE-2015-4142

BID: 74549

RHSA: 2015:1439