VRT Advisories

VRT Rules 2007-02-20

Sourcefire VRT Update

Date: 2007-02-20


A remotely exploitable vulnerability exists in the DCE/RPC dynamic preprocessor included with Snort versions 2.6.1,, and 2.7 Beta 1. For more details on the vulnerability refer to the advisory released on 2007-02-19.


The DCE/RPC preprocessor was vulnerable to a stack-based buffer overflow that could potentially allow a remote attacker to execute code in the context of the user running Snort.

Rules to detect attacks targeting this vulnerability are included in this release and are identified as SIDs 10158 through 10160.

Additionally a shared object rule to detect attacks targeting this vulnerability is included in this release and is identified as GID 3 SID 10161.

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.