Description: A vulnerability has been discovered in Microsoft XML Core Services, which can be exploited by malicious people to compromise a user's system.
The vulnerability is caused due to an error in the XMLHTTP ActiveX Control (msxml4.dll) within the "setRequestHeader()" method.
Successful exploitation allows execution of arbitrary code when a user e.g. visits a malicious website using Internet Explorer.
The vulnerability is confirmed on a fully patched Windows XP SP2 system with msxml4.dll version 4.20.9818.0 installed. Other versions may also be affected.
NOTE: The vulnerability is already being actively exploited.
Do you have this product installed on your home computer? Scan using the free Personal Software Inspector. Check if a vulnerable version is installed on computers in your corporate network, using the Network Software Inspector.
Provided and/or discovered by: Discovered as a 0-day.
Changelog: 2006-11-06: Added link to US-CERT.
2006-11-08: Added CVE reference.
2006-11-09: Added additional information.
2006-11-14: Added additional information from Microsoft. Updated "Solution" section.
Extended Solution: The "Extended Solution" section is available for Secunia customers only. Request a trial and get access to the Secunia Customer Area and Extended Secunia advisories.
Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
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