The SnifferDecompress function in wiretap/ngsniffer.c in the DOS Sniffer file parser in Wireshark 1.10.x before 1.10.10 and 1.12.x before 1.12.1 does not prevent data overwrites during copy operations, which allows remote attackers to cause a denial of service (application crash) via a crafted file.
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=10461
http://www.wireshark.org/security/wnpa-sec-2014-19.html
http://www.debian.org/security/2014/dsa-3049
http://secunia.com/advisories/61933
http://secunia.com/advisories/61929
http://secunia.com/advisories/60578
http://secunia.com/advisories/60280
http://rhn.redhat.com/errata/RHSA-2014-1677.html
http://rhn.redhat.com/errata/RHSA-2014-1676.html
http://lists.opensuse.org/opensuse-updates/2014-09/msg00058.html
http://lists.opensuse.org/opensuse-security-announce/2014-09/msg00033.html