libpng: Execute Arbitrary Code/Commands -- Remote with User Interaction

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                         AUSCERT Security Bulletin

                               ASB-2012.0047
                          Libpng 1.5.10 Released
                               2 April 2012

===========================================================================

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

Product:              libpng
Operating System:     UNIX variants (UNIX, Linux, OSX)
                      Windows
Impact/Access:        Execute Arbitrary Code/Commands -- Remote with User Interaction
Resolution:           Patch/Upgrade
CVE Names:            CVE-2011-3048  
Member content until: Wednesday, May  2 2012

OVERVIEW

        A new version of libpng has been released.


IMPACT

        The vendor has provided the following information:
        
        "All "modern" versions of libpng through 1.5.9, 1.4.10, 1.2.48, and
        1.0.58, respectively, fail to correctly handle malloc() failure for
        text chunks (in png_set_text_2()), which can lead to memory corruption
        and the possibility of execution of hostile code. This serious
        vulnerability has been assigned ID CVE-2011-3048 and is fixed in
        version 1.5.10 (and versions 1.4.11, 1.2.49, and 1.0.59, respectively,
        on the older branches), released 29 March 2012." [1]


MITIGATION

        The vendor recommends updating to the latest version. [2]


REFERENCES

        [1] libpng
            http://www.libpng.org/pub/png/libpng.html

        [2] Libpng 1.5.10 -  March 29, 2012
            http://www.libpng.org/pub/png/src/libpng-1.5.10-README.txt

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.

===========================================================================
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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