A new security update has been released for Gentoo Linux - Cpio: Buffer overflow. Here the announcement:
Gentoo Linux Security Advisory GLSA 200711-18
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http://security.gentoo.org/
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Severity: Normal
Title: Cpio: Buffer overflow
Date: November 14, 2007
Bugs: #196978
ID: 200711-18
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Synopsis
========
GNU cpio contains a buffer overflow vulnerability, possibly resulting
in a Denial of Service.
Background
==========
GNU cpio copies files into or out of a cpio or tar archive.
Affected packages
=================
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Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 app-arch/cpio < 2.9-r1 >= 2.9-r1
Description
===========
A buffer overflow vulnerability in the safer_name_suffix() function in
GNU cpio has been discovered.
Impact
======
A remote attacker could entice a user to open a specially crafted
archive file resulting in a stack-based buffer overflow, possibly
crashing the application. It is disputed whether the execution of
arbitrary code is possible.
Workaround
==========
There is no known workaround at this time.
Resolution
==========
All GNU cpio users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=app-arch/cpio-2.9-r1"
References
==========
[ 1 ] CVE-2007-4476
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-4476
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200711-18.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
http://bugs.gentoo.org.
License
=======
Copyright 2007 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
