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bugtraq: [ GLSA 200806-09 ] libvorbis: Multiple vulnerabilities

[ GLSA 200806-09 ] libvorbis: Multiple vulnerabilities

From: Robert Buchholz <rbu_at_nospam>
Date: Mon Jun 23 2008 - 23:13:20 GMT
To: gentoo-announce@gentoo.org

  • - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200806-09:02
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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@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