Technical Description

A vulnerability has been identified in Microsoft Windows, which could be exploited by remote attackers to compromise an affected system. This issue is caused by a buffer overflow error in the ActiveX control for streaming video "MSVidCtl.dll" when reading a file containing overly long data, which could be exploited by remote attackers to execute arbitrary code by tricking a user into visiting a specially crafted web page.

This vulnerability is currently being exploited in the wild.

A second memory corruption issue in "MSVidCtl.dll" was inadvertently fixed by this security update.

Affected Products

Microsoft Windows XP Service Pack 2
Microsoft Windows XP Service Pack 3
Microsoft Windows XP Professional x64 Edition Service Pack 2
Microsoft Windows Server 2003 Service Pack 2
Microsoft Windows Server 2003 x64 Edition Service Pack 2
Microsoft Windows Server 2003 SP2 (Itanium)

Solution

Apply patches :
http://www.microsoft.com/technet/security/Bulletin/MS09-032.mspx

References

http://www.vupen.com/english/advisories/2009/1787
http://www.microsoft.com/technet/security/advisory/972890.mspx
http://www.microsoft.com/technet/security/Bulletin/MS09-032.mspx

Credits

Vulnerability discovered in the wild.

ChangeLog

2009-07-06 : Initial release
2009-07-06 : Updated Solution and References
2009-07-14 : Updated Solution
2009-07-17 : Updated Description

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