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                         AUSCERT Security Bulletin

                               ASB-2009.1122
               VLC Media Player Stack Overflow Vulnerability
                              4 November 2009

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        AusCERT Security Bulletin Summary
        ---------------------------------

Product:              VLC Media Player
Operating System:     Windows
                      UNIX variants (UNIX, Linux, OSX)
Impact/Access:        Execute Arbitrary Code/Commands -- Remote with User Interaction
Resolution:           Patch/Upgrade
Member content until: Friday, December  4 2009

OVERVIEW

        A vulnerability has been identified and corrected in VLC media
        player.


IMPACT

        The vendor has provided the following information regarding this
        vulnerability:
        
        "When parsing a MP4, ASF or AVI file with an overly deep box 
        structure, a stack overflow might occur.
        ...
        Exploitation of this issue requires the user to explicitly open a 
        specially crafted file." [1] 


MITIGATION

        VLC media player 1.0.2 has been released to correct this 
        vulnerability. It is available for download from the vendor's
        website. [2]


REFERENCES

        [1] VideoLAN Security Advisory 0901
            http://www.videolan.org/security/sa0901.html

        [2] VLC media player
            http://www.videolan.org/vlc/

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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