Monday, June 15, 2009

DirectShow Subject to Attacks, Microsoft Warns

By Jabulani Leffall05/29/2009

Microsoft issued a security advisory on Friday describing a newly disclosed bug in Microsoft DirectShow that could enable remote code execution attacks.

In its advisory, the software giant said the vulnerability could be triggered if an unsuspecting user opens specially crafted media file. A hacker successfully deploying this bug could increase his user rights privileges within a Windows-based network. However, accounts configured with fewer administrative privileges aren't as vulnerable, Redmond said.

"While our investigation is ongoing, our investigation so far has shown that Windows 2000 Service Pack 4, Windows XP, and Windows Server 2003 are vulnerable," the advisory explained. Currently, Microsoft is aware of "limited, active attacks that exploit this vulnerability."

Users of Windows Vista, Windows 7 RC1 and Windows Server 2008 are not affected by this vulnerability, Redmond said.

Microsoft has rolled out an improved "Software Security Incident Response Process (SSIRP)" to better respond to the issue, the security bulletin explained.

Microsoft DirectShow is a framework that provides an application programming interface for developers working with multimedia files. The framework supplants Microsoft's earlier Video for Windows interface.