Integer overflow in the dissect_tnef function in epan/dissectors/packet-tnef.c in the TNEF dissector in Wireshark 1.10.x before 1.10.13 and 1.12.x before 1.12.4 allows remote attackers to cause a denial of service (infinite loop) via a crafted length field in a packet.
http://www.securitytracker.com/id/1031858
http://www.debian.org/security/2015/dsa-3210
http://lists.opensuse.org/opensuse-updates/2015-03/msg00038.html