VRT Advisories


VRT Rules 2011-11-02

Sourcefire VRT Rules Update

Date: 2011-11-02

Synopsis:

This release adds and modifies rules in several categories.

Details:

The Sourcefire VRT has added and modified multiple rules in the backdoor, blacklist, chat, deleted, dos, exploit, file-identify, ftp, misc, multimedia, policy, specific-threats, spyware-put, web-activex and web-misc rule sets to provide coverage for emerging threats from these technologies.

This release introduces the file-identify.rules category. The purpose of this category is to standardize the structure of rules that set a flowbit used to identify file downloading activities. A new port variable, FILE_DATA_PORTS, accompanies this category and contains a ports list used by these rules to identify the download of file types.

Rule Pack Summary:

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

Warning:

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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