01642 06 11 11 Arrange Call

Active Directory SPN Validation Vulnerability

CVE-2011-0040 · MEDIUM

CVE-2011-0040

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."

Learn more about our Cis Benchmark Audit For Server Software.