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RHEL 7 : wpa_supplicant (RHSA-2015:1090)

medium Nessus Plugin ID 84142

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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 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.

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

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

See Also

https://access.redhat.com/errata/RHSA-2015:1090

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

https://access.redhat.com/security/cve/cve-2015-1863

Plugin Details

Severity: Medium

ID: 84142

File Name: redhat-RHSA-2015-1090.nasl

Version: 2.17

Type: local

Agent: unix

Published: 6/12/2015

Updated: 2/5/2021

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

Risk Information

VPR

Risk Factor: Medium

Score: 5.2

CVSS v2

Risk Factor: Medium

Base Score: 5.8

Temporal Score: 5

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

Vulnerability Information

CPE: cpe:/o:redhat:enterprise_linux:7, cpe:/o:redhat:enterprise_linux:7.3, cpe:/o:redhat:enterprise_linux:7.4, cpe:/o:redhat:enterprise_linux:7.5, cpe:/o:redhat:enterprise_linux:7.6, cpe:/o:redhat:enterprise_linux:7.7, p-cpe:/a:redhat:enterprise_linux:wpa_supplicant, cpe:/o:redhat:enterprise_linux:7.2, p-cpe:/a:redhat:enterprise_linux:wpa_supplicant-debuginfo, cpe:/o:redhat:enterprise_linux:7.1

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: 6/11/2015

Vulnerability Publication Date: 4/28/2015

Reference Information

CVE: CVE-2015-1863, CVE-2015-4142

BID: 74296, 74549

RHSA: 2015:1090