The RPC client implementation in Microsoft Windows XP SP2 and SP3 and Server 2003 SP2 does not properly allocate memory during the parsing …

The RPC client implementation in Microsoft Windows XP SP2 and SP3 and Server 2003 SP2 does not properly allocate memory during the parsing of responses, which allows remote RPC servers and man-in-the-middle attackers to execute arbitrary code via a malformed response, aka "RPC Memory Corruption Vulnerability."