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AA-2008.0085                  AUSCERT Advisory

                             [Win][UNIX/Linux]
          Vulnerabilities in the zlib extension for Python 2.5.2
                               11 April 2008
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        AusCERT Advisory Summary
        ------------------------

Product:              Python 2.5.2
Operating System:     Windows
                      UNIX variants (UNIX, Linux, OSX)
Impact:               Execute Arbitrary Code/Commands
Access:               Remote/Unauthenticated
CVE Names:            CVE-2008-1721
Member content until: Friday, May 09 2008

OVERVIEW

        Two vulnerabilities in the Python zlib module may allow a remote
        attacker to execute arbitrary code.[1]


IMPACT

        If python is used to handle certain archive files it can be tricked
        into a buffer overflow that could cause code of an attackers choice
        to be run as the user running python.


MITIGATION

        A fix has been released for Python 2.5.2. Users of Python 2.5.2
        should update their software as soon as possible.[2]


REFERENCES

        [1] CVE-2008-1721
            http://nvd.nist.gov/nvd.cfm?cvename=CVE-2008-1721

        [2] Python SVN Repository
            http://svn.python.org/view?rev=62235&view=rev

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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