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AA-2009.0129                  AUSCERT Advisory

                             [Win][UNIX/Linux]
                    libsndfile: Execute Arbitrary Code
                                27 May 2009
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        AusCERT Advisory Summary
        ------------------------

Product:              libsndfile 1.0.19 and prior
                      Winamp 5.552
Operating System:     UNIX variants (UNIX, Linux, OSX)
                      Windows
Impact:               Execute Arbitrary Code/Commands
                      Denial of Service
Access:               Remote/Unauthenticated
CVE Names:            CVE-2009-1791
Member content until: Wednesday, June 24 2009

OVERVIEW:

       A multiple heap-based buffer overflow vulnerability has been found
       in libsndfile due to improper bounds checking by the 
       aiff_read_header() and voc_read_header() functions.


IMPACT:

       A remote attacker could trick a user into opening a specially 
       crafted VOC or AIFF file, overflowing the buffer and possibly
       causing a denial of service or executing arbitrary code.
       Be aware that this issue also affects Winamp 5.552. [1]


MITIGATION:

       Upgrade to the latest version of libsndfile. [2]


REFERENCES:

       [1] libsndfile AIFF or VOC buffer overflow
           http://xforce.iss.net/xforce/xfdb/50541

       [2] libsndfile 1.0.20.
           http://www.mega-nerd.com/erikd/Blog/CodeHacking/libsndfile/

AusCERT has made every effort to ensure that the information contained
in this document is accurate.  However, the decision to use the information
described is the responsibility of each user or organisation. The decision to
follow or act on information or advice contained in this security bulletin is
the responsibility of each user or organisation, and should be considered in
accordance with your organisation's site policies and procedures. AusCERT
takes no responsibility for consequences which may arise from following or
acting on information or advice contained in this security bulletin.

If you believe that your computer system has been compromised or attacked in 
any way, we encourage you to let us know by completing the secure National IT 
Incident Reporting Form at:

        http://www.auscert.org.au/render.html?it=3192

===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072

Internet Email: auscert@auscert.org.au
Facsimile:      (07) 3365 7031
Telephone:      (07) 3365 4417 (International: +61 7 3365 4417)
                AusCERT personnel answer during Queensland business hours
                which are GMT+10:00 (AEST).
                On call after hours for member emergencies only.
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