An invalid read flaw was found in the way DTN dissector of Wireshark, a network traffic analyzer, performed dissection of certain DTN packet capture files. A remote attacker could provide a specially-crafted DTN packet / packet capture that, when processed, would lead tshark executable crash, when trying to process the crafted packet / packet capture file.

Upstream bug report:
[1] https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=7945

Sample packet capture:
[2] http://www.wireshark.org/download/automated/captures/fuzz-2012-10-31-25737.pcap

Relevant upstream patch:
[3] http://anonsvn.wireshark.org/viewvc?view=revision&revision=46577

References:
[4] http://www.wireshark.org/security/wnpa-sec-2013-03.html
[5] http://www.openwall.com/lists/oss-security/2013/01/31/2