libexif: Buffer overflow vulnerability

1. Gentoo Linux Security Advisory

Advisory Reference	GLSA 200503-17 / libexif
Release Date	March 12, 2005
Latest Revision	March 12, 2005: 01
Impact	normal
Exploitable	remote

Package	Vulnerable versions	Unaffected versions	Architecture(s)
media-libs/libexif	< 0.5.12-r1	>= 0.5.12-r1	All supported architectures

Related bugreports: #84076

Synopsis

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

2. Impact Information

Background

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

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.

3. Resolution Information

Workaround

There is no known workaround at this time.

Resolution

All libexif users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=media-libs/libexif-0.5.12-r1"

4. References

CAN-2005-0664

Updated March 12, 2005

Summary: This is a Gentoo Linux Security Advisory

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