A denial of service flaw was found in the way Slow Protocols dissector of Wireshark, a network traffic analyzer, performed dissection of certain Slow Protocols packet capture files. A remote attacker could provide a specially-crafted Slow Protocols packet / packet capture that, when processed, would lead to excessive CPU consumption or into situation where tshark executable would enter an infinite loop, when trying to process the crafted packet / packet capture file.

Upstream bug report:
[1] https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=8036

Sample packet capture:
[2] https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=8036#c0

Relevant upstream patch:
[3] http://anonsvn.wireshark.org/viewvc?view=revision&revision=46336

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