Xvid: Array indexing vulnerabilities

1. Gentoo Linux Security Advisory

Advisory Reference	GLSA 200708-02 / xvid
Release Date	August 08, 2007
Latest Revision	August 08, 2007: 01
Impact	normal
Exploitable	remote

Package	Vulnerable versions	Unaffected versions	Architecture(s)
media-libs/xvid	< 1.1.3	>= 1.1.3	All supported architectures

Related bugreports: #183145

Synopsis

Several array indexing vulnerabilities were discovered in Xvid, possibly allowing for the remote execution of arbitrary code.

2. Impact Information

Background

Xvid is a popular open source video codec licensed under the GPL.

Description

Trixter Jack discovered an array indexing error in the get_intra_block() function in the file src/bitstream/mbcoding.c. The get_inter_block_h263() and get_inter_block_mpeg() functions in the same file were also reported as vulnerable.

Impact

An attacker could exploit these vulnerabilities to execute arbitrary code by tricking a user or automated system into processing a malicious video file with an application that makes use of the Xvid library.

3. Resolution Information

Workaround

There is no known workaround at this time.

Resolution

All Xvid users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=media-libs/xvid-1.1.3"

4. References

CVE-2007-3329

Page updated August 08, 2007

Summary: This is a Gentoo Linux Security Advisory

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