VRT Advisories

VRT Rules 2007-02-17

Sourcefire VRT Update

Date: 2007-02-17


This Snort Engine Update (SEU) addresses a vulnerability in the DCERPC preprocessor.


A critical vulnerability exists in Sourcefire Intrusion Sensors. The DCERPC preprocessor is vulnerable to a stack-based buffer overflow that could potentially allow an attacker to remotely execute code.

This SEU contains an updated Detection Engine that resolve this issue.

Mitigation Factors:

Customer who cannot immediately install the SEU can mitigate this vulnerability by disabling the DCERPC preprocessor.

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.