The dissect_sip_common function in epan/dissectors/packet-sip.c in the SIP dissector in Wireshark 1.8.x before 1.8.12 and 1.10.x before 1.10.4 does not check for empty lines, which allows remote attackers to cause a denial of service (infinite loop) via a crafted packet.
http://www.wireshark.org/security/wnpa-sec-2013-66.html
http://www.mandriva.com/security/advisories?name=MDVSA-2013:296
http://secunia.com/advisories/56313
http://secunia.com/advisories/56285
http://rhn.redhat.com/errata/RHSA-2014-0342.html
http://rhn.redhat.com/errata/RHSA-2014-0341.html
http://lists.opensuse.org/opensuse-updates/2014-01/msg00014.html
http://lists.opensuse.org/opensuse-updates/2014-01/msg00011.html
http://lists.opensuse.org/opensuse-updates/2014-01/msg00007.html
http://anonsvn.wireshark.org/viewvc?view=revision&revision=51738