The krb5_db2_lockout_audit function in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) 1.8 through 1.8.4, when the db2 (aka Berkeley DB) back end is used, allows remote attackers to cause a denial of service (assertion failure and daemon exit) via unspecified vectors, a different vulnerability than CVE-2011-1528.
https://exchange.xforce.ibmcloud.com/vulnerabilities/70891
http://www.kb.cert.org/vuls/id/659251
http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2011-006.txt