Home / mailings [gentoo-announce] [ GLSA 201111-11 ] GNU Tar: User-assisted execution of arbitrary code
Posted on 20 November 2011
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Gentoo Linux Security Advisory GLSA 201111-11
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http://security.gentoo.org/
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Severity: Normal
Title: GNU Tar: User-assisted execution of arbitrary code
Date: November 20, 2011
Bugs: #313333
ID: 201111-11
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Synopsis
========
A buffer overflow flaw in GNU Tar could result in execution of
arbitrary code or a Denial of Service.
Background
==========
GNU Tar is a utility to create archives as well as add and extract
files from archives.
Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 app-arch/tar < 1.23 >= 1.23
Description
===========
GNU Tar is vulnerable to a boundary error in the rmt_read__ function in
lib/rtapelib.c, which could cause a heap-based buffer overflow.
Impact
======
A remote attacker could entice the user to load a specially crafted
archive, possibly resulting in the execution of arbitrary code or a
Denial of Service.
Workaround
==========
There is no known workaround at this time.
Resolution
==========
All GNU Tar users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=app-arch/tar-1.23"
NOTE: This is a legacy GLSA. Updates for all affected architectures are
available since July 18, 2010. It is likely that your system is already
no longer affected by this issue.
References
==========
[ 1 ] CVE-2010-0624
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2010-0624
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-201111-11.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 2011 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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