(MS11-005) Vulnerability in Active Directory Could Allow Denial of Service (2478953)

This security update addresses a vulnerability in Active Directory, which could allow denial of service if an attacker sent a specially crafted packet to an affected Active Directory server. However, the attacker needs to have valid local administrator privileges on the domain-joined computer to successfully carry out the attack. More specifically, this update addresses the vulnerability by correcting the way that the Active Directory server handles service principal name (SPN) update requests.