VRT Advisories

VRT Rules 2007-04-16

Sourcefire VRT Update

Date: 2007-04-16


The Sourcefire VRT is aware of vulnerabilities affecting hosts using the Microsoft DNS Server Service. This release enhances the detection capabilities for this vulnerability.


Microsoft Security Advisory (935964):
Microsoft DNS Server Service is prone to a vulnerability that may allow a remote attacker to execute code on an affected system. This issue is present in the RPC interface of servers using Microsoft's implementation of DNS.

In order to detect attacks targeting this vulnerability, the DCE/RPC preprocessor must be configured to use 'autodetect'. This is the default behavior for the preprocessor.

This release provides updated detection for this vulnerability.

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.