Secunia Research has discovered two vulnerabilities in Microsoft Office PowerPoint, which can be exploited by malicious people to compromise a user’s system. The vulnerabilities are caused by boundary errors when processing certain atoms and can be exploited to cause stack-based buffer overflows via a specially crafted PowerPoint file. Successful exploitation allows execution of arbitrary code. Microsoft PowerPoint 2000 SP3 is affected.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/77451/secunia-atom.txt
Source: https://packetstormsecurity.com/files/77451/Microsoft-PowerPoint-Atom-Parsing-Buffer-Overflows.html