The Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) 1.6.x through 1.9, when an LDAP backend is used, allows remote attackers to cause a denial of service (NULL pointer dereference or buffer over-read, and daemon crash) via a crafted principal name.
http://lists.opensuse.org/opensuse-security-announce/2011-02/msg00004.html
http://secunia.com/advisories/43260
http://secunia.com/advisories/43273
http://secunia.com/advisories/43275
http://secunia.com/advisories/46397
http://securityreason.com/securityalert/8073
https://exchange.xforce.ibmcloud.com/vulnerabilities/65323
http://www.mandriva.com/security/advisories?name=MDVSA-2011:024
http://www.mandriva.com/security/advisories?name=MDVSA-2011:025
http://www.redhat.com/support/errata/RHSA-2011-0199.html
http://www.redhat.com/support/errata/RHSA-2011-0200.html
http://www.securitytracker.com/id?1025037
http://www.vmware.com/security/advisories/VMSA-2011-0012.html
http://www.vupen.com/english/advisories/2011/0330
http://www.vupen.com/english/advisories/2011/0333