This flaw, specifically in the Server Service's RPC (Remote Procedure Call) handling, allowed unauthenticated remote code execution. An attacker could exploit this by sending a specially crafted RPC request to a vulnerable system. Successful exploitation granted the attacker full control over the compromised machine.
The vulnerability affected Windows 2000, XP, Server 2003, and early Vista/Server 2008 versions. Microsoft addressed this with security bulletin MS07-029, releasing patches to mitigate the risk. The alert urged immediate application of these patches to prevent widespread compromise, highlighting the severe threat of unauthenticated remote access and potential for worm propagation.
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National Cyber Alert System
Technical Cyber Security Alert TA07-044A
Microsoft Updates for Multiple Vulnerabilities
Original release date: February 13, 2007
Last revised: --
Source: US-CERT
Systems Affected
* Microsoft Windows
* Microsoft Internet Explorer
* Microsoft Office
* Microsoft Works
* Microsoft Malware Protection Engine
* Microsoft Visual Studio
* Microsoft Step-by-Step Interactive Training
Overview
Microsoft has released updates that address critical vulnerabilities
in Microsoft Windows, Internet Explorer, Office, Works, Malware
Protection Engine, Visual Studio, and Step-by-Step Interactive
Training. Exploitation of these vulnerabilities could allow a remote,
unauthenticated attacker to execute arbitrary code or cause a denial
of service on a vulnerable system.
I. Description
Microsoft has released updates to address vulnerabilities that affect
Microsoft Windows, Internet Explorer, Office, Works, Malware
Protection Engine, Visual Studio, and Step-by-Step Interactive
Training as part of the Microsoft Security Bulletin Summary for
February 2007. The most severe vulnerabilities could allow a remote,
unauthenticated attacker to execute arbitrary code or cause a denial
of service on a vulnerable system.
Some of the updates released for Microsoft Office address
vulnerabilities that are actively being exploited. For more
information, refer to the following Vulnerability Notes:
http://www.kb.cert.org/vuls/byid?searchview&query=VU%23166700,VU%23996892,VU%23412225,VU%23613740
Further information about the vulnerabilities addressed by these
updates is available in the Vulnerability Notes Database.
II. Impact
A remote, unauthenticated attacker could execute arbitrary code on a
vulnerable system. An attacker may also be able to cause a denial of
service.
III. Solution
Apply updates from Microsoft
Microsoft has provided updates for these vulnerabilities in the
February 2007 Security Bulletins. The Security Bulletins describe any
known issues related to the updates. Note any known issues described
in the Bulletins and test for any potentially adverse effects in your
environment.
System administrators may wish to consider using an automated patch
distribution system such as Windows Server Update Services (WSUS).
IV. References
* US-CERT Vulnerability Notes for Microsoft February 2007 updates -
<http://www.kb.cert.org/vuls/byid?searchview&query=ms07-feb>
* Securing Your Web Browser -
<http://www.us-cert.gov/reading_room/securing_browser/>
* Microsoft Security Bulletin Summary for February 2007 -
<http://www.microsoft.com/technet/security/bulletin/ms07-feb.mspx>
* Microsoft Update - <https://update.microsoft.com/microsoftupdate/>
* Microsoft Office Update - <http://officeupdate.microsoft.com/>
* Known Microsoft Office vulnerabilities addressed in this release -
<http://www.kb.cert.org/vuls/byid?searchview&query=VU%23166700,VU%23996892,VU%23412225,VU%23613740>
* Windows Server Update Services -
<http://www.microsoft.com/windowsserversystem/updateservices/default.mspx>
____________________________________________________________________
The most recent version of this document can be found at:
<http://www.us-cert.gov/cas/techalerts/TA07-044A.html>
____________________________________________________________________
Feedback can be directed to US-CERT Technical Staff. Please send
email to <
subject.
____________________________________________________________________
For instructions on subscribing to or unsubscribing from this
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____________________________________________________________________
Produced 2007 by US-CERT, a government organization.
Terms of use:
<http://www.us-cert.gov/legal.html>
____________________________________________________________________
Revision History
February 13, 2007: Initial release
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