VRT Advisories

VRT Rules 2010-06-10

Sourcefire VRT Rules Update

Date: 2010-06-10


The Sourcefire VRT is aware of a vulnerability affecting Microsoft Help and Support Center.


Microsoft Help and Support Center Bypass Vulnerability: Microsoft Help and Support Center contains a programming error that may allow a remote attacker to bypass security restrictions on an affected system. The error occurs when invalid hex-encoded characters are used as a parameter to a search query using the hcp:// URI schema.

A rule to detect attacks targeting this vulnerability is included in this release and is identified with GID 1, SID 16665.

Rule Pack Summary:

For a complete list of new and modified rules, click here.


Sourcefire VRT rule packs often utilize enhancements made to Snort. Operators should upgrade to the latest revision or patch level for Snort to ensure these enhancements are available before using these rules.

About the VRT:

The Sourcefire VRT is a group of leading edge intrusion detection and prevention experts working to proactively discover, assess and respond to the latest trends in hacking activity, intrusion attempts and vulnerabilities. This team is also supported by the vast resources of the open source Snort community, making it the largest group dedicated to advances in the network security industry.