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Gentoo Linux Security Advisory 200710-4

Gentoo Linux Security Advisory 200710-4
Posted Oct 9, 2007
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory GLSA 200710-04 - 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. Versions less than 1.0.17-r1 are affected.

tags | advisory, overflow
systems | linux, gentoo
advisories | CVE-2007-4974
SHA-256 | cb6be2c374e0dbf08552c7a74d4275119375285f4d3baeb02a4840bc3cb7b298

Gentoo Linux Security Advisory 200710-4

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Gentoo Linux Security Advisory GLSA 200710-04
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Severity: Normal
Title: libsndfile: Buffer overflow
Date: October 07, 2007
Bugs: #192834
ID: 200710-04

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Synopsis
========

A buffer overflow vulnerability has been discovered in libsndfile.

Background
==========

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

Affected packages
=================

-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 media-libs/libsndfile < 1.0.17-r1 >= 1.0.17-r1

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.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All libsndfile users should upgrade to the latest version:

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

References
==========

[ 1 ] CVE-2007-4974
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-4974

Availability
============

This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

http://security.gentoo.org/glsa/glsa-200710-04.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
http://bugs.gentoo.org.

License
=======

Copyright 2007 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).

The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.

http://creativecommons.org/licenses/by-sa/2.5
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