VRT Advisories


VRT Rules 2005-09-27

Sourcefire VRT Certified Rules Update

Date: 2005-09-27

Synopsis:

The Sourcefire Vulnerability Research Team (VRT) has made numerous rule reference additions and documentation improvements as well as adding new rules to detect attempts to exploit vulnerabilities in Microsoft Step-by-Step Interactive Training and Internet Explorer's handling of ActiveX objects.

Details:

This is a maintenance release for Sourcefire VRT rules. Numerous references have been added to existing rules and rule documentation has been updated. Along with this maintenance release, new rules have been added to address exploit attempts against Microsoft Step-by-Step Interactive Training and an additional attack vector against Internet Explorer's handling of ActiveX objects.

A vulnerability exists in Microsoft Step-by-Step Interactive Training that may allow an attacker to run code of their choosing on a vulnerable client.

Rules to detect attacks against this vulnerability are included in this rule pack and are identified as sids 4194 through 4196.

Multiple vulnerabilities exist in Microsoft Internet Explorer that may allow an attacker to execute code of their choosing on a vulnerable system. This can be achieved by manipulating the trust between Internet Explorer and ActiveX objects.

A rule to detect attacks against these vulnerabilities is included in this rule pack and is identified as sid 4197.

Rule Pack Summary:

For a complete list of new and modified rules, click here.

Warning:

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 network security industry.