libsndfile: Buffer overflow

1. Gentoo Linux Security Advisory

Advisory Reference	GLSA 200710-04 / libsndfile
Release Date	October 07, 2007
Latest Revision	October 07, 2007: 01
Impact	normal
Exploitable	remote

Package	Vulnerable versions	Unaffected versions	Architecture(s)
media-libs/libsndfile	< 1.0.17-r1	>= 1.0.17-r1	All supported architectures

Related bugreports: #192834

Synopsis

A buffer overflow vulnerability has been discovered in libsndfile.

2. Impact Information

Background

libsndfile is a library for reading and writing various formats of audio files including WAV and FLAC.

Description

Robert Buchholz of the Gentoo Security team discovered that the flac_buffer_copy() function does not correctly handle FLAC streams with variable block sizes which leads to a heap-based buffer overflow (CVE-2007-4974).

Impact

A remote attacker could exploit this vulnerability by enticing a user to open a specially crafted FLAC file or network stream with an application using libsndfile. 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 libsndfile users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=media-libs/libsndfile-1.0.17-r1"

4. References

CVE-2007-4974

Page updated October 07, 2007

Summary: This is a Gentoo Linux Security Advisory

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