MS15-122 – Important: Security Update for Kerberos to Address Security Feature Bypass (3105256) – Version: 1.0

Severity Rating: Important
Revision Note: V1.0 (November 10, 2015): Bulletin published.
Summary: This security update resolves a security feature bypass in Microsoft Windows. An attacker could bypass Kerberos authentication on a target machine and decrypt drives protected by BitLocker. The bypass can be exploited only if the target system has BitLocker enabled without a PIN or USB key.