From: Secunia Security Advisories (sec-advsecunia.com)
Date: Tue Apr 10 2007 - 13:47:04 CDT

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TITLE:
Microsoft Agent URL Parsing Memory Corruption Vulnerability

SECUNIA ADVISORY ID:
SA22896

VERIFY ADVISORY:
http://secunia.com/advisories/22896/

CRITICAL:
Highly critical

IMPACT:
System access

WHERE:
From remote

OPERATING SYSTEM:
Microsoft Windows 2000 Advanced Server
http://secunia.com/product/21/
Microsoft Windows 2000 Datacenter Server
http://secunia.com/product/1177/
Microsoft Windows 2000 Professional
http://secunia.com/product/1/
Microsoft Windows 2000 Server
http://secunia.com/product/20/
Microsoft Windows Server 2003 Datacenter Edition
http://secunia.com/product/1175/
Microsoft Windows Server 2003 Enterprise Edition
http://secunia.com/product/1174/
Microsoft Windows Server 2003 Standard Edition
http://secunia.com/product/1173/
Microsoft Windows Server 2003 Web Edition
http://secunia.com/product/1176/
Microsoft Windows XP Home Edition
http://secunia.com/product/16/
Microsoft Windows XP Professional
http://secunia.com/product/22/

DESCRIPTION:
Secunia Research has discovered a vulnerability in Microsoft Windows,
which can be exploited by malicious people to compromise a user's
system.

The vulnerability is caused due to an error in Microsoft Agent
(agentsvr.exe) when processing specially crafted URLs passed as
arguments to certain methods.

Successful exploitation allows execution of arbitrary code when a
user e.g. visits a malicious website with Internet Explorer.

SOLUTION:
Apply patches.

Windows 2000 (requires SP4):
http://www.microsoft.com/downloads/details.aspx?FamilyId=49dc470b-64e2-47ec-be90-622b407c7751

Windows XP (requires SP2):
http://www.microsoft.com/downloads/details.aspx?FamilyId=e16ededa-6e8c-40d6-a3c0-d61362411acc

Windows XP Professional x64 Edition (optionally with SP2):
http://www.microsoft.com/downloads/details.aspx?FamilyId=23909036-898f-41af-a3de-4a899a15d25d

Windows Server 2003 (optionally with SP1/SP2):
http://www.microsoft.com/downloads/details.aspx?FamilyId=281f10d2-d754-44cd-8318-9ce94b8d01b4

Windows Server 2003 x64 Edition (requires SP1/SP2):
http://www.microsoft.com/downloads/details.aspx?FamilyId=50469b54-b6ff-46ed-b2bc-3b00b0984e1e

Windows Server 2003 for Itanium-based systems (optionally with
SP1/SP2):
http://www.microsoft.com/downloads/details.aspx?FamilyId=883660ca-e976-460f-8e50-c19d1b02b42f

PROVIDED AND/OR DISCOVERED BY:
JJ Reyes and Carsten Eiram, Secunia Research.

ORIGINAL ADVISORY:
MS07-020 (KB932168):
http://www.microsoft.com/technet/security/Bulletin/MS07-020.mspx

Secunia Research:
http://secunia.com/secunia_research/2006-74/

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About:
This Advisory was delivered by Secunia as a free service to help
everybody keeping their systems up to date against the latest
vulnerabilities.

Subscribe:
http://secunia.com/secunia_security_advisories/

Definitions: (Criticality, Where etc.)
http://secunia.com/about_secunia_advisories/

Please Note:
Secunia recommends that you verify all advisories you receive by
clicking the link.
Secunia NEVER sends attached files with advisories.
Secunia does not advise people to install third party patches, only
use those supplied by the vendor.

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