MIT Kerberos 5 (aka krb5) 1.7.x through 1.12.x before 1.12.2 allows remote attackers to cause a denial of service (buffer over-read or NULL pointer dereference, and application crash) by injecting invalid tokens into a GSSAPI application session.
https://github.com/krb5/krb5/commit/e6ae703ae597d798e310368d52b8f38ee11c6a73
https://exchange.xforce.ibmcloud.com/vulnerabilities/94903
http://www.securitytracker.com/id/1030706
http://www.securityfocus.com/bid/68908
http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html
http://www.mandriva.com/security/advisories?name=MDVSA-2014:165
http://www.debian.org/security/2014/dsa-3000
http://secunia.com/advisories/60082
http://secunia.com/advisories/59102
http://rhn.redhat.com/errata/RHSA-2015-0439.html