The server in Microsoft Active Directory on Windows Server 2003 SP2 does not properly handle an update request for a service principal name (SPN), which allows remote attackers to cause a denial of service (authentication downgrade or outage) via a crafted request that triggers name collisions, aka “Active Directory SPN Validation Vulnerability.”
osvdb.org/70825
secunia.com/advisories/43215
www.securityfocus.com/bid/46145
www.securitytracker.com/id?1025042
www.vupen.com/english/advisories/2011/0319
docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-005
exchange.xforce.ibmcloud.com/vulnerabilities/64915
oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12485