VRT Advisories

VRT Rules 2010-12-09

Sourcefire VRT Rules Update

Date: 2010-12-09


The Sourcefire VRT is aware of a vulnerability affecting Internet Explorer.


Microsoft Internet Explorer Remote Code Execution: Microsoft Internet Explorer contains a programming error that may allow a remote attacker to execute code on an affected system. The problem occurs when the application attempts to reference memory after it has been freed.

A rule to detect attacks targeting this vulnerability is included in this release and is identified with GID 1, SID 18196.

Additionally the Sourcefire VRT has added and modified multiple rules in the netbios and specific-threats rule sets to provide coverage for emerging threats from these technologies.

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.

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