GLSA 200711-15: FLAC: Buffer overflow

http://security.gentoo.org/

Severity:	normal
Title:	FLAC: Buffer overflow
Date:	11/12/2007
Bugs:	#195700
ID:	200711-15

Synopsis

Multiple integer overflow vulnerabilities were found in FLAC possibly allowing for the execution of arbitrary code.

Background

The Xiph.org Free Lossless Audio Codec (FLAC) library is the reference implementation of the FLAC audio file format. It contains encoders and decoders in library and executable form.

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
media-libs/flac	< 1.2.1-r1	>= 1.2.1-r1	All supported architectures

Description

Sean de Regge reported multiple integer overflows when processing FLAC media files that could lead to improper memory allocations resulting in heap-based buffer overflows.

Impact

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

Workaround

There is no known workaround at this time.

Resolution

All FLAC users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=media-libs/flac-1.2.1-r1"

You should also run revdep-rebuild to rebuild any packages that depend on older versions of FLAC:


    # revdep-rebuild --library=libFLAC.*

References

CVE-2007-4619

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200711-15.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 https://bugs.gentoo.org.