Date: Mon, 11 Dec 2006 22:46:21 +0100
From: Matthias Geerdsen <vorlon@gentoo.org.>
To: gentoo-announce@gentoo.org
Subject: [ GLSA 200612-10 ] Tar: Directory traversal vulnerability
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Gentoo Linux Security Advisory GLSA 200612-10
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http://security.gentoo.org/
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Severity: Normal
Title: Tar: Directory traversal vulnerability
Date: December 11, 2006
Bugs: #155901
ID: 200612-10
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Synopsis
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Tar is vulnerable to directory traversal possibly allowing for the
overwriting of arbitrary files.
Background
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The Tar program provides the ability to create and manipulate tar
archives.
Affected packages
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Package / Vulnerable / Unaffected
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1 app-arch/tar < 1.16-r2 >=3D 1.16-r2
Description
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Tar does not properly extract archive elements using the GNUTYPE_NAMES
record name, allowing files to be created at arbitrary locations using
symlinks. Once a symlink is extracted, files after the symlink in the
archive will be extracted to the destination of the symlink.
Impact
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An attacker could entice a user to extract a specially crafted tar
archive, possibly allowing for the overwriting of arbitrary files on
the system extracting the archive.
Workaround
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There is no known workaround at this time.
Resolution
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All Tar users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=3Dapp-arch/tar-1.16-r2"
References
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[ 1 ] CVE-2006-6097
http://cve.mitre.org/cgi-bin/cvename.cgi?name=3DCVE-2006-6097
Availability
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This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200612-10.xml
Concerns?
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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
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Copyright 2006 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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