Zero Day Initiative Advisory 10-06 – This vulnerability allows remote attackers to execute code on vulnerable installations of RealNetworks RealPlayer. User interaction is required in that a user must open a malicious file or visit a malicious web site. The specific flaw exists during the parsing of GIF files with forged chunk sizes. The player uses values from the file improperly when allocating a buffer on the heap. An attacker can abuse this to create and then overflow heap buffers leading to arbitrary code execution in the context of the currently logged in user.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/85503/ZDI-10-006.txt
Source: https://packetstormsecurity.com/files/85503/Zero-Day-Initiative-Advisory-10-06.html