VRT Advisories


VRT Rules 2007-06-12

Sourcefire VRT Rules Update

Date: 2007-06-12

Synopsis:

The Sourcefire VRT is aware of vulnerabilities affecting hosts using Microsoft products.

Details:

Microsoft Security Bulletin MS07-033:
Microsoft Internet Explorer suffers from multiple problems which may allow a remote attacker to execute code on an affected system.

COM Object Instantation Memory Corruption Vulnerability (CVE-2007-0218):
Multiple vulnerabilities exist in the way that Internet Explorer handles ActiveX controls. It may be possible for an attacker to instantiate COM objects on a vulnerable system by using an ActiveX control.

Rules to detect attacks targeting this vulnerability were previously released and are identified as SIDs 7904, 7905, 7928, 7929, 7934, 7935, 7938, 7939, 7942 through 7945 and SIDs 7958 and 7959.

Navigation Cancel Page Spoofing Vulnerability (CVE-2007-1752):
It may be possible for an attacker to display spoofed content in the Navigation cancelled information page in Internet Explorer. This may allow the attacker to execute code on an affected system.

A rule to detect attacks targeting this vulnerability is included in this release and is identified as SID 11834.

Speech Control Memory Corruption Vulnerability (CVE-2007-2222):
The Microsoft Speech API contains a programming error that may allow a remote attacker to execute code on an affected system.

Rules to detect attacks targeting this vulnerability are included in this release and are identified as SIDs 11826 through 11833.

Microsoft Security Bulletin MS07-034:
Microsoft Mail fails to correctly handle UNC navigation requests. An attacker could utilize this vulnerability to execute code on an affected system.

A rule to detect attacks targeting this vulnerability is included in this release and is identified as SID 11837.

Microsoft Security Bulletin MS07-034:
Microsoft Visio fails to correctly validate the version number contained in a document. An attacker can utilize this flaw to execute code on an affected system.

A rule to detect attacks targeting this vulnerability is included in this release and is identified as SID 11836.

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.