VRT Advisories

VRT Rules 2007-01-10

Sourcefire VRT Update

Date: 2007-01-10


The Sourcefire Vulnerability Research Team (VRT) has continued research into vulnerabilities affecting Microsoft Outlook and Microsoft Internet Explorer.


Microsoft Security Bulletin MS07-003:
Microsoft Outlook suffers from a programming error that may allow an attacker to execute arbitrary code. This problem arises when Outlook tries to process a malformed saved search file (.oss).

A rule to detect attacks targeting this vulnerability is included in this release and is identified as SID 9847.

Microsoft Security Bulletin MS07-004:
Microsoft Internet Explorer contains a programming error that may lead to an integer overflow condition. A remote attacker may be able to execute code on an affected machine by hosting a web page which has properties that could cause the overflow to occur.

Rules to detect attacks targeting this vulnerability are included in this release and are identified as SIDs 9848 and 9849.

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.