VRT Advisories


VRT Rules 2008-11-11

Sourcefire VRT Rules Update

Date: 2008-11-11

Synopsis:

The Sourcefire VRT is aware of vulnerabilities affecting Microsoft systems and Adobe Acrobat Reader.

Details:

Microsoft Security Advisory MS08-068:
A vulnerability in the Microsoft Server Message Block (SMB) protocol may allow a remote attacker to execute code on an affected system. The problem lies in the way that the protocol handles NTLM credentials when users attempt to login to a system.

A rule to detect attacks targeting this vulnerability is included in this release and is identified with GID 3, SID 15009.

Microsoft Security Advisory MS08-069:
Multiple vulnerabilities exist in Microsoft XML Core Services, the most serious of which may allow a remote attacker to execute code on an affected system.

Rules to detect attacks targeting these vulnerabilities are included in this release and are identified with GID 3, SIDs 15012 and 15013.

Adobe Acrobat Reader Buffer Overflow (CVE-2008-2992):
Adobe Acrobat Reader is prone to a buffer overflow vulnerability which may allow a remote attacker to execute code on an affected system. The application fails to correctly check user-supplied data before passing to the util.printf javascript function.

A rule to detect attacks targeting this vulnerability is included in this release and is identified with GID 1, SID 15014.

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.