Speex: User-assisted execution of arbitrary code

1. Gentoo Linux Security Advisory

Advisory Reference	GLSA 200804-17 / speex
Release Date	April 17, 2008
Latest Revision	April 17, 2008: 01
Impact	normal
Exploitable	remote

Package	Vulnerable versions	Unaffected versions	Architecture(s)
media-libs/speex	< 1.2_beta3_p2	>= 1.2_beta3_p2	All supported architectures

Related bugreports: #217715

Synopsis

Improper input validation in Speex might lead to array indexing vulnerabilities in multiple player applications.

2. Impact Information

Background

Speex is an audio compression format designed for speech that is free of patent restrictions.

Description

oCERT reported that the Speex library does not properly validate the "mode" value it derives from Speex streams, allowing for array indexing vulnerabilities inside multiple player applications. Within Gentoo, xine-lib, VLC, gst-plugins-speex from the GStreamer Good Plug-ins, vorbis-tools, libfishsound, Sweep, SDL_sound, and speexdec were found to be vulnerable.

Impact

A remote attacker could entice a user to open a specially crafted Speex file or network stream with an application listed above. This might lead to the execution of arbitrary code with privileges of the user playing the file.

3. Resolution Information

Workaround

There is no known workaround at this time.

Resolution

All Speex users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=media-libs/speex-1.2_beta3_p2"

4. References

CVE-2008-1686

Page updated April 17, 2008

Summary: This is a Gentoo Linux Security Advisory

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