Wireshark: Denial of Service -- Remote with User Interaction

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                         AUSCERT Security Bulletin

                               ASB-2012.0106
       A number of vulnerabilities have been identified in Wireshark
                               25 July 2012

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

Product:              Wireshark
Operating System:     UNIX variants (UNIX, Linux, OSX)
                      Windows
Impact/Access:        Denial of Service -- Remote with User Interaction
Resolution:           Patch/Upgrade
CVE Names:            CVE-2012-4048 CVE-2012-4049 
Member content until: Friday, August 24 2012

OVERVIEW

        A number of vulnerabilities have been identified in Wireshark prior
        to versions 1.8.1, 1.6.9 and 1.4.14.


IMPACT

        The vendor has provided the following details regarding these 
        vulnerabilities:
        
        "It may be possible to make Wireshark crash by injecting a malformed 
        packet onto the wire or by convincing someone to read a malformed
        packet trace file." [1]
        
        "It may be possible to make Wireshark consume excessive CPU resources 
        by injecting a malformed packet onto the wire or by convincing someone 
        to read a malformed packet trace file." [2]


MITIGATION

        The vendor recommends upgrading to the latest releases of Wireshark to
        correct these issues.


REFERENCES

        [1] PPP dissector crash
            http://www.wireshark.org/security/wnpa-sec-2012-11.html

        [2] Large loop in the NFS dissector
            http://www.wireshark.org/security/wnpa-sec-2012-12.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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