[gentoo-announce] [ GLSA 200806-09 ] libvorbis: Multiple vulnerabilities

[news 28]

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Gentoo Linux Security Advisory GLSA 200806-09:02

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http://security.gentoo.org/

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Severity: Normal

Title: libvorbis: Multiple vulnerabilities

Date: June 23, 2008

Updated: June 23, 2008

Bugs: #222085

ID: 200806-09:02

 

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Synopsis

========

 

Multiple vulnerabilities in libvorbis might lead to the execution of

arbitrary code.

 

Background

==========

 

libvorbis is the reference implementation of the Xiph.org Ogg Vorbis

audio file format. It is used by many applications for playback of Ogg

Vorbis files.

 

Affected packages

=================

 

-------------------------------------------------------------------

Package / Vulnerable / Unaffected

-------------------------------------------------------------------

1 media-libs/libvorbis < 1.2.1_rc1 >= 1.2.1_rc1

 

Description

===========

 

Will Drewry of the Google Security Team reported multiple

vulnerabilities in libvorbis:

 

* A zero value for "codebook.dim" is not properly handled, leading to

a crash, infinite loop or triggering an integer overflow

(CVE-2008-1419).

 

* An integer overflow in "residue partition value" evaluation might

lead to a heap-based buffer overflow (CVE-2008-1420).

 

* An integer overflow in a certain "quantvals" and "quantlist"

calculation might lead to a heap-based buffer overflow

(CVE-2008-1423).

 

Impact

======

 

A remote attacker could exploit these vulnerabilities by enticing a

user to open a specially crafted Ogg Vorbis file or network stream with

an application using libvorbis. This might lead to the execution of

arbitrary code with the privileges of the user playing the file or a

Denial of Service by a crash or CPU consumption.

 

Workaround

==========

 

There is no known workaround at this time.

 

Resolution

==========

 

All libvorbis users should upgrade to the latest version:

 

# emerge --sync

# emerge --ask --oneshot -v ">=media-libs/libvorbis-1.2.1_rc1"

 

References

==========

 

[ 1 ] CVE-2008-1419

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1419

[ 2 ] CVE-2008-1420

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1420

[ 3 ] CVE-2008-1423

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1423

 

Availability

============

 

This GLSA and any updates to it are available for viewing at

the Gentoo Security Website:

 

http://security.gentoo.org/glsa/glsa-200806-09.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 ( -at -) gentoo.org or alternatively, you may file a bug at

http://bugs.gentoo.org.

 

License

=======

 

Copyright 2008 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