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Monday, July 06, 2009

Microsoft warns of hole in Video ActiveX control

Microsoft on Monday warned of a vulnerability in its Video ActiveX Control that could allow an attacker to take control of a PC if the user visits a malicious Web site.

There have been limited attacks exploiting the hole, which affects Windows XP and Windows Server 2003, Microsoft said on its Security Response Center blog.

This is the second DirectShow security hole Microsoft has announced in the past few months. The company has yet to provide a security update for a vulnerability announced in May that involves the way DirectX handles QuickTime files.

Microsoft is working on a security update and will release it when the quality is at the appropriate level for broad distribution, the company said.

The Microsoft Video Control object is an ActiveX control that connects Microsoft DirectShow filters for use in capturing, recording, and playing video. The control is the main component used in Windows Media Center for building filter graphs for recording and playing television video.

Antivirus vendor Symantec said it was seeing the flaw being exploited in China and other parts of Asia and cited reports that indicate thousands of Web sites are hosting the exploit.

Internet Explorer versions 6 and 7 are at risk, but people running IE 8 are not vulnerable, Symantec said.

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