VRT Advisories


VRT Rules 2009-01-20

Sourcefire VRT Rules Update

Date: 2009-01-20

Synopsis:

The Sourcefire VRT has added multiple rules to the web-activex, specific-threats, web-client and multimedia rule sets to provide coverage for emerging threats from these technologies.

Details:

Security Fix - This module pack resolves a potential recursive evaluation DoS condition in SO rules that utilize the built-in content match API function. Sourcefire recommends installing this release as soon as possible if high latency is encountered when dealing with large SMB file transfers.

As a result of ongoing research, the Sourcefire VRT has added multiple rules to the web-activex, specific-threats, web-client and multimedia 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.

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.