Comment 12 for bug 978458

Multiple heap-based buffer overflow flaws were found in the way the code generated by Perl-based DCE/RPC IDL (PIDL) compiler of the Samba suite performed array memory allocation. Memory for an array having an is_size() attribute has been allocated based on the array length, which was provided by the Network Data Representation (NDR) marshalling code (converting parameters provided to the RPC call by the client to the NDR). On the other hand the loop retrieving array elements for a particular array used variable indicated by the size_is() attribute. A remote attacker could provide a specially-crafted remote procedure call (RPC) parameters, which once processed by the marshalling code of the Samba server would lead to Samba daemon (smbd) crash, or, potentially arbitrary code execution with the privileges of the user running the server.