Microsoft DirectShow QuickTime Atom Parsing Memory Corruption Vulnerability (MS09-028)
15 Jul. 2009
Summary
This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Microsoft Windows. User interaction is required in that a target must visit a malicious page or open a malicious video file.
Vulnerable Systems:
* Microsoft Windows 2000
* Microsoft Windows XP
* Microsoft Windows Server 2003
The specific flaw exists within Microsoft's DirectShow module quartz.dll. While parsing QuickTime atoms the NumberOfEntries field is trusted and if modified can control the location of several pointers meant to track stream positions. Specifying values that are larger than the number of bytes left to process in the input file will cause corruption that can be leveraged to execute arbitrary code.
