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Microsoft Windows HTML Help ActiveX Control Vulnerability
Secunia Advisory: SA24136
Release Date: 2007-02-13
Last Update: 2007-02-14
Popularity: 11,146 views

Critical:
Highly critical
Impact: System access
Where: From remote
Solution Status: Vendor Patch

OS:Microsoft Windows 2000 Advanced Server
Microsoft Windows 2000 Datacenter Server
Microsoft Windows 2000 Professional
Microsoft Windows 2000 Server
Microsoft Windows Server 2003 Datacenter Edition
Microsoft Windows Server 2003 Enterprise Edition
Microsoft Windows Server 2003 Standard Edition
Microsoft Windows Server 2003 Web Edition
Microsoft Windows XP Home Edition
Microsoft Windows XP Professional

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CVE reference:CVE-2007-0214


Description:
A vulnerability has been reported in Microsoft Windows, which can be exploited by malicious people to compromise a user's system.

The vulnerability is caused due to certain parameters not being properly initialised by the HTML ActiveX control (Hhctrl.ocx) when handling certain methods.

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

NOTE: Other unspecified issues discovered internally by Microsoft have also been reported.

Solution:
Apply patches.

Windows 2000 SP4:
http://www.microsoft.com/downloads/de...=211a9c07-88ff-4ae4-a82a-ce2045c6c4fe

Windows XP SP2:
http://www.microsoft.com/downloads/de...=a3700273-d7da-4a60-ba80-c95c8036d670

Windows XP Professional x64 Edition:
http://www.microsoft.com/downloads/de...=69ef4daa-cf0f-4898-8675-911428e7fd74

Windows Server 2003 (optionally with SP1):
http://www.microsoft.com/downloads/de...=5a1f1607-b6ec-41e2-aac0-34387f1211a7

Windows Server 2003 for Itanium-based systems (optionally with SP1):
http://www.microsoft.com/downloads/de...=d638c8e8-5fbe-4a32-945c-440a4b684b0f

Windows Server 2003 x64 Edition:
http://www.microsoft.com/downloads/de...=65bf2245-6c89-43db-8d28-12988791c395

Provided and/or discovered by:
The vendor credits HD Moore, BreakingPoint Systems.

Changelog:
2007-02-14: Added links to US-CERT.

Original Advisory:
MS07-008 (KB928843):
http://www.microsoft.com/technet/security/Bulletin/MS07-008.mspx

Other References:
US-CERT VU#563756:
http://www.kb.cert.org/vuls/id/563756


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