Revision Note: V2.1 (February 22, 2011): Summary revised to notify users of a change in the deployment logic for updates described in this advisory. This change is intended to minimize the user interaction required to install the updates on systems configured for automatic updating.
Summary: Microsoft is announcing the availability of updates to the Autorun feature that help to restrict AutoPlay functionality to only CD and DVD media on supported editions of Windows XP, Windows Server 2003, Windows Vista, and Windows Server 2008. Restricting AutoPlay functionality to only CD and DVD media can help protect customers from attack vectors that involve the execution of arbitrary code by Autorun when inserting a USB flash drive, network shares, or other non-CD and non-DVD media containing a file system with an Autorun.inf file.
Microsoft Security Advisory (967940): Update for Windows Autorun – Version: 2.1