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Microsoft Agent URL Parsing Vulnerability
Date Discovered: 04/10/2007
Severity: High
Operating Systems Affected: Microsoft Windows 2000 SP4
Microsoft Windows XP SP2
Microsoft Windows Server 2003
Microsoft Windows Server 2003 SP1
Microsoft Windows Server 2003 SP2
Synopsis
A remote code execution vulnerability exists in Microsoft Agent in the way that it handles certain specially crafted URLs.
Recommended Actions
Update the patches as guided by vendor at :
http://www.microsoft.com/technet/security/Bulletin/MS07-020.mspx
Threat Analysis
Microsoft Agent is a component that uses interactive animated characters to guide users and can make using and learning to use a computer easier.

A specially crafted URL could corrupt system memory in such a way that an attacker could execute arbitrary code when supplied to Microsoft Agent control.This vulnerability requires that a user is logged on and visits a Web site for any malicious action to occur. Therefore, any systems where Internet Explorer is used frequently, such as workstations or terminal servers, are at the most risk from this vulnerability.
References

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-1205
Write-up by: Nataraj Vasam