samba: denial of service

The Server Message Block (SMB) protocol, also known as Common Internet File System (CIFS) acts as an application-layer protocol to provide shared access to files, printers and Inter-Process Communication (IPC). It is also a transport for Distributed Computing Environment / Remote Procedure Call (DCE / RPC) operations After negotiating an SMB communication the client sends a 'Session Setup AndX' packet to negotiate a session in order to be able to connect on a specific share. IT is possible to trigger an uninitialized variable read by sending a specific 'Sessions Setup AndX' query. Successful exploitation of the issue will result in a denial of service.