[ GLSA 200706-01 ] libexif: Integer overflow vulnerability
Date: Tue, 5 Jun 2007 20:58:32 +0200
From: Raphael Marichez <falco@gentoo.org.>
To: gentoo-announce@gentoo.org
Subject: [ GLSA 200706-01 ] libexif: Integer overflow vulnerability
Message-ID: <20070605185832.GE26847@falco.falcal.net.>
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Gentoo Linux Security Advisory GLSA 200706-01
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http://security.gentoo.org/
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Severity: Normal
Title: libexif: Integer overflow vulnerability
Date: June 05, 2007
Bugs: #178081
ID: 200706-01
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Synopsis
========
libexif fails to handle Exif (EXchangeable Image File) data inputs,
making it vulnerable to an integer overflow.
Background
==========
libexif is a library for parsing, editing and saving Exif data.
Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 media-libs/libexif < 0.6.15 >= 0.6.15
Description
===========
Victor Stinner reported an integer overflow in the
exif_data_load_data_entry() function from file exif-data.c while
handling Exif data.
Impact
======
An attacker could entice a user to process a file with specially
crafted Exif extensions with an application making use of libexif,
which will trigger the integer overflow and potentially execute
arbitrary code or crash the application.
Workaround
==========
There is no known workaround at this time.
Resolution
==========
All libexif users should upgrade to the latest version. Please note
that users upgrading from "<=media-libs/libexif-0.6.13" should also run
revdep-rebuild after their upgrade.
# emerge --sync
# emerge --ask --oneshot --verbose ">=media-libs/libexif-0.6.15"
# revdep-rebuild --library=/usr/lib/libexif.so
References
==========
[ 1 ] CVE-2007-2645
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-2645
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200706-01.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
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