AusCERT - ASB-2009.1091 - [Win][UNIX/Linux] pidgin: Multiple vulnerabilities

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ASB-2009.1091 - [Win][UNIX/Linux] pidgin: Multiple vulnerabilities - Remote/unauthenticated

Date: 22 September 2009
References: ESB-2009.1309 ESB-2009.1460 ESB-2010.0041

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                         AUSCERT Security Bulletin

                               ASB-2009.1091
             Multiple Vulnerabilities in pidgin prior to 2.6.2
                             22 September 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
                      Access Confidential Data -- Remote/Unauthenticated
Resolution:           Patch/Upgrade
Member content until: Thursday, October 22 2009

OVERVIEW

        A new release of Pidgin has been released correcting several security 
        flaws.


IMPACT

        CVE-2009-2703 - Fix parsing of invalid TOPIC messages in IRC [1] which
        could cause a crash.
        
        CVE-2009-3026 - Fix bug where SSL/TLS was not required even though 
        the "require SSL/TLS" preference checked when connecting to servers
        that use the older iq-based authentication. [1]
        
        CVE-2009-3083 - Fix a crash when receiving certain SLP invite 
        messages. [1]
        
        CVE-2009-3084 - Fix a crash when receiving some handwritten 
        messages. [1]
        
        CVE-2009-3085 - Don't crash when receiving "smileyfied" XHTML-IM 
        from clients that don't support bits of binary (ie. when getting an
        empty <data/> in return) [1]


MITIGATION

        It is recommended to update your installation of Pidgin to the
        latest version which is 2.6.2 at this moment.
        
        To download the latest version go to:
        
            http://www.pidgin.im/download/


REFERENCES

        [1] ChangeLog - Pidgin - Trac
            http://developer.pidgin.im/wiki/ChangeLog

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)
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                which are GMT+10:00 (AEST).
                On call after hours for member emergencies only.
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