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Category:   Application (Generic)  >   Microsoft HTML Help Vendors:   Microsoft
Microsoft HTML Help ActiveX Control Lets Remote Users Execute Arbitrary Code
SecurityTracker Alert ID:  1017635
SecurityTracker URL:  http://securitytracker.com/id/1017635
CVE Reference:   CVE-2007-0214   (Links to External Site)
Date:  Feb 13 2007
Impact:   Execution of arbitrary code via network, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  

Description:   A vulnerability was reported in Microsoft HTML Help. A remote user can cause arbitrary code to be executed on the target user's system.

A remote user can create specially crafted HTML that, when loaded by the target user, will trigger a parameter validation flaw in the HTML Help ActiveX control (Hhctrl.ocx) and execute arbitrary code on the target system. The code will run with the privileges of the target user.

Microsoft credits HD Moore of BreakingPoint Systems with reporting this vulnerability.

Impact:   A remote user can create HTML that, when loaded by the target user, will execute arbitrary code on the target user's system.
Solution:   The vendor has issued the following fixes:

Microsoft Windows 2000 Service Pack 4:

http://www.microsoft.com/downloads/details.aspx?FamilyId=211a9c07-88ff-4ae4-a82a-ce2045c6c4fe

Microsoft Windows XP Service Pack 2:

http://www.microsoft.com/downloads/details.aspx?FamilyId=a3700273-d7da-4a60-ba80-c95c8036d670

Microsoft Windows XP Professional x64 Edition:

http://www.microsoft.com/downloads/details.aspx?FamilyId=69ef4daa-cf0f-4898-8675-911428e7fd74

Microsoft Windows Server 2003 and Microsoft Windows Server 2003 Service Pack 1:

http://www.microsoft.com/downloads/details.aspx?FamilyId=5a1f1607-b6ec-41e2-aac0-34387f1211a7

Microsoft Windows Server 2003 for Itanium-based Systems and Microsoft Windows Server 2003 with SP1 for Itanium-based Systems:

http://www.microsoft.com/downloads/details.aspx?FamilyId=d638c8e8-5fbe-4a32-945c-440a4b684b0f

Microsoft Windows Server 2003 x64 Edition:

http://www.microsoft.com/downloads/details.aspx?FamilyId=65bf2245-6c89-43db-8d28-12988791c395

A restart is required.

The Microsoft advisory is available at:

http://www.microsoft.com/technet/security/bulletin/ms07-008.mspx

Vendor URL:  www.microsoft.com/technet/security/bulletin/ms07-008.mspx (Links to External Site)
Cause:   Input validation error
Underlying OS:  Windows (2000), Windows (2003), Windows (XP)

Message History:   None.


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