The dissect_version_4_primary_header function in epan/dissectors/packet-dtn.c in the DTN dissector in Wireshark 1.6.x before 1.6.13 and 1.8.x before 1.8.5 accesses an inappropriate pointer, which allows remote attackers to cause a denial of service (application crash) via a malformed packet.
anonsvn.wireshark.org/viewvc/trunk/epan/dissectors/packet-dtn.c?r1=46577&r2=46576&pathrev=46577
anonsvn.wireshark.org/viewvc?view=revision&revision=46577
lists.opensuse.org/opensuse-updates/2013-02/msg00028.html
lists.opensuse.org/opensuse-updates/2013-02/msg00037.html
www.wireshark.org/security/wnpa-sec-2013-03.html
bugs.wireshark.org/bugzilla/show_bug.cgi?id=7945
oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16304