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[ GLSA 200806-09 ] libvorbis: Multiple vulnerabilities
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PostPosted: Tue Jun 24, 2008 12:26 am    Post subject: [ GLSA 200806-09 ] libvorbis: Multiple vulnerabilities Reply with quote

Gentoo Linux Security Advisory

Title: libvorbis: Multiple vulnerabilities (GLSA 200806-09)
Severity: normal
Exploitable: remote
Date: June 23, 2008
Bug(s): #222085
ID: 200806-09

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: media-libs/libvorbis
Vulnerable: < 1.2.1_rc1
Unaffected: >= 1.2.1_rc1
Architectures: All supported architectures


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:
Code:
# emerge --sync
# emerge --ask --oneshot --verbose ">=media-libs/libvorbis-1.2.1_rc1"


References

CVE-2008-1419
CVE-2008-1420
CVE-2008-1423
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