Microsoft Active Directory Lightweight Directory Service (AD LDS) on Windows Vista SP2 Windows Server 2008 SP2 and R2 SP1 Windows 7 SP1 and Windows 8 and Active Directory Services on Windows Server 2008 SP2 and R2 SP1 and Server 2012 allow remote attackers to cause a denial of service (LDAP directory-service outage) via a crafted LDAP query aka \Remote Anonymous DoS Vulnerability.\