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                         AUSCERT Security Bulletin

                               ASB-2011.0099
                    Three vulnerabilities in Wireshark
                              7 November 2011

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

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

Product:              Wireshark
Operating System:     Windows
                      UNIX variants (UNIX, Linux, OSX)
Impact/Access:        Denial of Service -- Remote with User Interaction
Resolution:           Patch/Upgrade
CVE Names:            CVE-2011-4100 CVE-2011-4101 CVE-2011-4102
Member content until: Wednesday, December  7 2011

OVERVIEW

        Three DoS vulnerabilities have been corrected in Wireshark. [1,2,3]


IMPACT

        The vulnerabilities are:
         - An uninitialized variable in the CSN.1 dissector could cause a crash. [1]
         - A NULL pointer dereference in the  Infiniband dissector. [2]
         - A buffer overflow in the ERF file reader. [3]


MITIGATION

        Wireshark has released versions 1.6.3 and 1.4.10 to correct these
        vulnerabilities. [4]


REFERENCES

        [1] Wireshark CSN.1 dissector vulnerability
            http://www.wireshark.org/security/wnpa-sec-2011-17.html

        [2] Wireshark Infiniband dissector vulnerability
            http://www.wireshark.org/security/wnpa-sec-2011-18.html

        [3] Wireshark ERF file parser vulnerability
            http://www.wireshark.org/security/wnpa-sec-2011-19.html

        [4] Get Wireshark
            http://www.wireshark.org/download.html

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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