Date: Sun, 28 Jun 2009 01:57:05 +0200
From: Tobias Heinlein <keytoaster@gentoo.org.>
To: gentoo-announce@gentoo.org
Subject: [ GLSA 200906-01 ] libpng: Information disclosure
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Gentoo Linux Security Advisory GLSA 200906-01
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http://security.gentoo.org/
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Severity: Low
Title: libpng: Information disclosure
Date: June 27, 2009
Bugs: #272970
ID: 200906-01
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Synopsis
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A vulnerability has been discovered in libpng that allows for
information disclosure.
Background
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libpng is the official PNG reference library used to read, write and
manipulate PNG images.
Affected packages
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Package / Vulnerable / Unaffected
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1 media-libs/libpng < 1.2.37 >=3D 1.2.37
Description
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Jeff Phillips discovered that libpng does not properly parse 1-bit
interlaced images with width values that are not divisible by 8, which
causes libpng to include uninitialized bits in certain rows of a PNG
file.
Impact
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A remote attacker might entice a user to open a specially crafted PNG
file, possibly resulting in the disclosure of sensitive memory
portions.
Workaround
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There is no known workaround at this time.
Resolution
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All libpng users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=3Dmedia-libs/libpng-1.2.37"
References
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[ 1 ] CVE-2009-2042
http://cve.mitre.org/cgi-bin/cvename.cgi?name=3DCVE-2009-2042
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-200906-01.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 2009 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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