* [gentoo-announce] [ GLSA 201409-10 ] Bash: Code Injection (Updated fix for GLSA 201409-09)
@ 2014-09-25 13:56 99% Tobias Heinlein
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From: Tobias Heinlein @ 2014-09-25 13:56 UTC (permalink / raw
To: gentoo-announce
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Gentoo Linux Security Advisory GLSA 201409-10
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http://security.gentoo.org/
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Severity: High
Title: Bash: Code Injection (Updated fix for GLSA 201409-09)
Date: September 25, 2014
Bugs: #523592
ID: 201409-10
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Synopsis
========
A parsing flaw related to functions and environments in Bash could
allow attackers to inject code. The unaffected packages listed in GLSA
201409-09 had an incomplete fix.
Background
==========
Bash is the standard GNU Bourne Again SHell.
Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 app-shells/bash < 4.2_p48-r1 *>= 3.1_p18-r1
*>= 3.2_p52-r1
*>= 4.0_p39-r1
*>= 4.1_p12-r1
>= 4.2_p48-r1
Description
===========
Stephane Chazelas reported that Bash incorrectly handles function
definitions, allowing attackers to inject arbitrary code
(CVE-2014-6271). Gentoo Linux informed about this issue in GLSA
201409-09.
Tavis Ormandy reported that the patch for CVE-2014-6271 was incomplete.
As such, this GLSA supersedes GLSA 201409-09.
Impact
======
A remote attacker could exploit this vulnerability to execute arbitrary
commands even in restricted environments.
Workaround
==========
There is no known workaround at this time.
Resolution
==========
All Bash 3.1 users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=app-shells/bash-3.1_p18-r1"
All Bash 3.2 users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=app-shells/bash-3.2_p52-r1"
All Bash 4.0 users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=app-shells/bash-4.0_p39-r1"
All Bash 4.1 users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=app-shells/bash-4.1_p12-r1"
All Bash 4.2 users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=app-shells/bash-4.2_p48-r1"
References
==========
[ 1 ] CVE-2014-7169
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2014-7169
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-201409-10.xml
Concerns?
=========
Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users' machines is of utmost
importance to us. Any security concerns should be addressed to
security@gentoo.org or alternatively, you may file a bug at
https://bugs.gentoo.org.
License
=======
Copyright 2014 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).
The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.
http://creativecommons.org/licenses/by-sa/2.5
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