US-CERT Technical Cyber Security Alert TA09-187A -- Microsoft Video ActiveX Control Vulnerability

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Jul 6, 2009, 5:16:27 PM7/6/09
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National Cyber Alert System

Technical Cyber Security Alert TA09-187A


Microsoft Video ActiveX Control Vulnerability

Original release date: July 06, 2009
Last revised: --
Source: US-CERT


Systems Affected

* Microsoft Windows XP
* Microsoft Windows Server 2003


Overview

An unpatched vulnerability in the Microsoft Video ActiveX control
is being used in attacks.


I. Description

Microsoft has released Security Advisory (972890) to describe
attacks on a vulnerability in the Microsoft Video ActiveX control.
Because no fix is currently available for this vulnerability,
please see the Security Advisory and US-CERT Vulnerability Note
VU#180513 for workarounds.


II. Impact

A remote, unauthenticated attacker could execute arbitrary code
with the privileges of the victim user.


III. Solution

Apply workarounds

Microsoft has provided workarounds for this vulnerability in
Security Advisory (972890). Additional details and workarounds are
provided in US-CERT Vulnerability Note VU#180513.

The most effective workaround for this vulnerability is to set kill
bits for the Microsoft Video ActiveX control, as outlined in the
documents noted above. Other workarounds include disabling
ActiveX, as specified in the Securing Your Web Browser document,
and upgrading to Internet Explorer 7 or later, which can help
mitigate the vulnerability with its ActiveX opt-in feature.


IV. References

* US-CERT Vulnerability Note VU#180513 -
<http://www.kb.cert.org/vuls/id/180513>

* Microsoft Security Advisory (972890) -
<http://www.microsoft.com/technet/security/advisory/972890.mspx>

* Securing Your Web Browser -
<http://www.us-cert.gov/reading_room/securing_browser/>

____________________________________________________________________

The most recent version of this document can be found at:

<http://www.us-cert.gov/cas/techalerts/TA09-187A.html>
____________________________________________________________________

Feedback can be directed to US-CERT Technical Staff. Please send
email to <ce...@cert.org> with "TA09-187A Feedback VU#180513" in
the subject.
____________________________________________________________________

For instructions on subscribing to or unsubscribing from this
mailing list, visit <http://www.us-cert.gov/cas/signup.html>.
____________________________________________________________________

Produced 2009 by US-CERT, a government organization.

Terms of use:

<http://www.us-cert.gov/legal.html>
____________________________________________________________________

Revision History

July 06, 2009: Initial release


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