– – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –
Gentoo Linux Security Advisory GLSA 201612-39
– – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –
https://security.gentoo.org/
– – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –
Severity: Normal
Title: Bash: Arbitrary code execution
Date: December 13, 2016
Bugs: #594496
ID: 201612-39
– – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –
Synopsis
========
A vulnerability in Bash could potentially lead to arbitrary code
execution.
Background
==========
Bash is the standard GNU Bourne Again SHell.
Affected packages
=================
——————————————————————-
Package / Vulnerable / Unaffected
——————————————————————-
1 app-shells/bash < 4.3_p46-r1 >= 4.3_p46-r1
Description
===========
A vulnerability was found in the way Bash expands $HOSTNAME. Injecting
malicious code into $HOSTNAME could cause it to run each time Bash
expands \h in the prompt string.
Impact
======
A remote attacker controlling the system’s hostname (i.e. via DHCP)
could possibly execute arbitrary code with the privileges of the
process, or cause a Denial of
Service condition.
Workaround
==========
There is no known workaround at this time.
Resolution
==========
All Bash users should upgrade to the latest version:
# emerge –sync
# emerge –ask –oneshot –verbose “>=app-shells/bash-4.3_p46-r1”
References
==========
[ 1 ] CVE-2016-0634
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-0634
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
https://security.gentoo.org/glsa/201612-39
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 2016 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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<p>
<meta http-equiv=”content-type” content=”text/html; charset=utf-8″>
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<pre style=”color: rgb(0, 0, 0); font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; word-wrap: break-word; white-space: pre-wrap;”>- – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –
Gentoo Linux Security Advisory GLSA 201612-39
– – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –
<a class=”moz-txt-link-freetext” href=”https://security.gentoo.org/”>https://security.gentoo.org/</a>
– – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –
Severity: Normal
Title: Bash: Arbitrary code execution
Date: December 13, 2016
Bugs: #594496
ID: 201612-39
– – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –
Synopsis
========
A vulnerability in Bash could potentially lead to arbitrary code
execution.
Background
==========
Bash is the standard GNU Bourne Again SHell.
Affected packages
=================
——————————————————————-
Package / Vulnerable / Unaffected
——————————————————————-
1 app-shells/bash < 4.3_p46-r1 >= 4.3_p46-r1
Description
===========
A vulnerability was found in the way Bash expands $HOSTNAME. Injecting
malicious code into $HOSTNAME could cause it to run each time Bash
expands \h in the prompt string.
Impact
======
A remote attacker controlling the system’s hostname (i.e. via DHCP)
could possibly execute arbitrary code with the privileges of the
process, or cause a Denial of
Service condition.
Workaround
==========
There is no known workaround at this time.
Resolution
==========
All Bash users should upgrade to the latest version:
# emerge –sync
# emerge –ask –oneshot –verbose “>=app-shells/bash-4.3_p46-r1”
References
==========
[ 1 ] CVE-2016-0634
<a class=”moz-txt-link-freetext” href=”http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-0634″>http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-0634</a>
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
<a class=”moz-txt-link-freetext” href=”https://security.gentoo.org/glsa/201612-39″>https://security.gentoo.org/glsa/201612-39</a>
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
<a class=”moz-txt-link-abbreviated” href=”mailto:security@gentoo.org”>security@gentoo.org</a> or alternatively, you may file a bug at
<a class=”moz-txt-link-freetext” href=”https://bugs.gentoo.org”>https://bugs.gentoo.org</a>.
License
=======
Copyright 2016 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.
<a class=”moz-txt-link-freetext” href=”http://creativecommons.org/licenses/by-sa/2.5″>http://creativecommons.org/licenses/by-sa/2.5</a></pre>
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