VRT Advisories


VRT Rules 2008-04-08

Sourcefire VRT Rules Update

Date: 2008-04-08

Synopsis:

The Sourcefire VRT is aware of multiple vulnerabilities affecting products from the Microsoft Corporation.

Details:

Microsoft Security Bulletin (MS08-019)
Microsoft Visio contains a programming error that may allow a remote attacker to execute code on an affected system.

A rule to detect attacks targeting this vulnerability is included in this release and is identified with GID 3 SID 13665.

Microsoft Security Bulletin (MS08-020)
A vulnerability in the Microsoft DNS client may allow a remote attacker to spoof DNS replies and redirect traffic away from the intended target.

A rule to detect attacks targeting this vulnerability is included in this release and is identified with GID 3 SID 13667.

Microsoft Security Bulletin (MS08-021)
A vulnerability in Microsoft GDI may allow a remote attacker to execute code on a vulnerable system via specially crafted EMF or WMF files.

Rules to detect attacks targeting this vulnerability are included in this release and are identified with GID 1 SID 13678, GID 3 SID 13676 and GID 3 SID 13666.

Microsoft Security Bulletin (MS08-022)
A vulnerability in the Microsoft VBScript and JScript scripting engines may allow a remote attacker to execute code on a vulnerable machine via a specially crafted file hosted on the Internet.

Rules to detect attacks targeting this vulnerability are included in this release and are identified with GID 3, SIDs 13448 and 13449.

Microsoft Security Bulletin (MS08-023)
Microsoft Internet Explorer contains vulnerabilities that may allow the execution of code by a remote attacker via various ActiveX controls.

Rules to detect attacks targeting this vulnerability are included in this release and are identified with GID 3 and SIDs 13668 through 13675.

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 the network security industry.