VRT Advisories

VRT Rules 2011-08-03

Sourcefire VRT Rules Update

Date: 2011-08-03


The Sourcefire VRT is aware of a remote code execution vulnerability in the TimThumb plugin for WordPress.


The Sourcefire VRT is aware of a programming error in the TimThumb plugin for WordPress that may allow a remote attacker to execute code on an affected system. The vulnerability is present in the timthump.php script which does not correctly process user supplied input, allowing a remote attacker to upload content of their choosing into a directory, which can them be executed by the attacker.

A rule to detect attacks targeting this vulnerability is included in this release and is identified with GID 1, SID 19653.

Additionally, the Sourcefire VRT has added and modified multiple rules in the backdoor, botnet-cnc and exploit 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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