[ GLSA 200503-17 ] libexif: Buffer overflow vulnerability

[Luke Macken]

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Gentoo Linux Security Advisory GLSA 200503-17
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http://security.gentoo.org/
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Severity: Normal
Title: libexif: Buffer overflow vulnerability
Date: March 12, 2005
Bugs: #84076
ID: 200503-17

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Synopsis
========

libexif fails to validate certain inputs, making it vulnerable to
buffer overflows.

Background
==========

libexif is a library for parsing, editing and saving EXIF data.

Affected packages
=================

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Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 media-libs/libexif < 0.5.12-r1 >= 0.5.12-r1

Description
===========

libexif contains a buffer overflow vulnerability in the EXIF tag
validation code. When opening an image with a specially crafted EXIF
tag, the lack of validation can cause applications linked to libexif to
crash.

Impact
======

A specially crafted EXIF file could crash applications making use of
libexif, potentially allowing the execution of arbitrary code with the
privileges 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-0.5.12-r1"

References
==========

[ 1 ] CAN-2005-0664
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0664

Availability
============

This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

http://security.gentoo.org/glsa/glsa-200503-17.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 2005 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/2.0

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