CA SiteMinder Federation (FSS) 12.5, 12.0, and r6; Federation (Standalone) 12.1 and 12.0; Agent for SharePoint 2010; and SiteMinder for Secure Proxy Server 6.0, 12.0, and 12.5 does not properly verify XML signatures for SAML statements, which allows remote attackers to spoof other users and gain privileges.