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                         AUSCERT Security Bulletin

                               ASB-2009.1113
            Pidgin 2.6.3 fixes denial of service vulnerability
                              23 October 2009

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

Product:              Pidgin
Operating System:     Windows
                      UNIX variants (UNIX, Linux, OSX)
Impact/Access:        Denial of Service -- Remote/Unauthenticated
Resolution:           Patch/Upgrade
CVE Names:            CVE-2009-3615  
Member content until: Sunday, November 22 2009

OVERVIEW

        Pidgin has released version 2.6.3 which fixes a denial of service
        vulnerability,


IMPACT

        Pidgin has stated:
        
        "A specially crafted message can trigger an incorrect memory access
        in the oscar protocol plugin which can lead to a crash. This happens
        when the SIM IM client attempts to send contacts to a libpurple
        user." [1]


MITIGATION

        Version 2.6.3 is available for download from the vendors website. [2]
        
        It is expected that vendors that package pidgin and/or libpurple will
        update shortly.


REFERENCES

        [1] Pidgin Security Advisory
            http://www.pidgin.im/news/security/?id=41

        [2] Download Pidgin
            http://www.pidgin.im/download/

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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