VRT Advisories

VRT Rules 2007-09-04

Sourcefire VRT Rules Update

Date: 2007-09-04


The Sourcefire VRT is aware of vulnerabilities affecting Apple mDNSresponder. This release also contains updated rules.


Apple mDNSresponder Buffer Overflow CVE-2007-3744:
A buffer overflow condition in mDNSresponder may allow an attacker to execute code on an affected system. The problem is present in the UPnP IGD (Internet Gateway Device Standardized Device Control Protocol) implementation.

More information is available from http://nvd.nist.gov/nvd.cfm?cvename=CVE-2007-3744.

A rule to detect attacks targeting this vulnerability is included in this release and is identified as SID 12357.

As a result of ongoing research, the Sourcefire VRT has added multiple rules to the spyware-put, netbios and exploit rule groups.

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.