[ GLSA 201410-01 ] Bash: Multiple vulnerabilities

[GLSA]

Gentoo Linux Security Advisory

Title: Bash: Multiple vulnerabilities (GLSA 201410-01)
Severity: high
Exploitable: local, remote
Date: October 04, 2014
Bug(s): #523742, #524256
ID: 201410-01

Synopsis

Multiple parsing flaws in Bash could allow remote attackers to
inject code or cause a Denial of Service condition.


Background

Bash is the standard GNU Bourne Again SHell.

Affected Packages

Package: app-shells/bash
Vulnerable: < 4.2_p52
Unaffected: >= 3.1_p22 < 3.2
Unaffected: >= 3.2_p56 < 3.3
Unaffected: >= 4.0_p43 < 4.1
Unaffected: >= 4.1_p16 < 4.2
Unaffected: >= 4.2_p52
Architectures: All supported architectures


Description

Florian Weimer, Todd Sabin, Michal Zalewski et al. discovered further
parsing flaws in Bash. The unaffected Gentoo packages listed in this GLSA
contain the official patches to fix the issues tracked as CVE-2014-6277,
CVE-2014-7186, and CVE-2014-7187. Furthermore, the official patch known
as “function prefix patch” is included which prevents the
exploitation of CVE-2014-6278.


Impact

A remote attacker could exploit these vulnerabilities to execute
arbitrary commands or cause a Denial of Service condition via various
vectors.


Workaround

There is no known workaround at this time.

Resolution

All Bash 3.1 users should upgrade to the latest version: