Date: Tue, 26 Jun 2007 23:22:02 +0200
From: Raphael Marichez <falco@gentoo.org.>
To: [email protected]Subject: [ GLSA 200706-09 ] libexif: Buffer overflow
Message-ID: <20070626212202.GA12137@falco.falcal.net.>
Mail-Followup-To: [email protected],
[email protected], [email protected],
[email protected]
MIME-Version: 1.0
Content-Type: multipart/signed; micalg=pgp-sha1;
protocol="application/pgp-signature"; boundary="lrZ03NoBR/3+SXJZ"
Content-Disposition: inline
X-Web: http://falco.bz/
X-GPG-fingerprint: 04EB 153A 6B28 3E80 87A9 9B4F A77C 4BDE 021C 5BD2
X-GPG-Key: http://subkeys.pgp.net:11371/pks/lookup?op=get&search=0x021C5BD2
X-GPG-Subkey: http://subkeys.pgp.net:11371/pks/lookup?op=get&search=0x0114FC45
Organization: Gentoo Linux Security Team
User-Agent: Mutt/1.5.13 (2006-08-11)
X-Virus-Scanned: antivirus-gw at tyumen.ru
--lrZ03NoBR/3+SXJZ
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Gentoo Linux Security Advisory GLSA 200706-09
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
http://security.gentoo.org/
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Severity: Normal
Title: libexif: Buffer overflow
Date: June 26, 2007
Bugs: #181922
ID: 200706-09
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Synopsis
========
libexif does not properly handle image EXIF information, possibly
allowing for the execution of arbitrary code.
Background
==========
libexif is a library for parsing, editing and saving EXIF metadata from
images.
Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 media-libs/libexif < 0.6.16 >= 0.6.16
Description
===========
iDefense Labs have discovered that the exif_data_load_data_entry()
function in libexif/exif-data.c improperly handles integer data while
working with an image with many EXIF components, allowing an integer
overflow possibly leading to a heap-based buffer overflow.
Impact
======
An attacker could entice a user of an application making use of a
vulnerable version of libexif to load a specially crafted image file,
possibly resulting in a crash of the application or the execution of
arbitrary code with the rights of the user running the application.
Workaround
==========
There is no known workaround at this time.
Resolution
==========
All libexif users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=media-libs/libexif-0.6.16"
References
==========
[ 1 ] CVE-2006-4168
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-4168
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200706-09.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
[email protected] 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
--lrZ03NoBR/3+SXJZ
Content-Type: application/pgp-signature
Content-Disposition: inline
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.7 (GNU/Linux)
iQEVAwUBRoGDejvRww8BFPxFAQI3TQf/abZeouCwhMucF//nUXenNE94dMAnBjlM
XIB3XD+3T1ygMJB56NsTXPG3FdjP3T3noZOYAK53J0ZVr7jYh59pFguzPhyPX94L
w0vo1rz49XaPTNy3HIHYMb9hpklVmG2no9DQvDtvHGsq/mZXPAgaAqa7puIvl6ut
ASgvSg72cS+yMLmw2SgKYONbPofu75x9ERsADjptwvz+k6RJAYUxMC8RXqOdmStl
f5LKLhJIGmFjHGpu5KTos2nBw/LEGlTU30gdKIOHpA9qkXOXiANYDks9K88eCCKe
KX4tF3jkBUAaWPHmD7gCfJH1U57SELmnIFmu/mO+GS2eXJhZ8LL83Q==
=GI7V
-----END PGP SIGNATURE-----
--lrZ03NoBR/3+SXJZ--
