[ GLSA 200710-04 ] libsndfile: Buffer overflow

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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

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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

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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.

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