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Sourcefire VRT Advisory

Squid Proxy DoS, Microsoft Windows IP DoS and Multiple Rule Modifications and Additions

2007-02-09

Synopsis:

The Sourcefire Vulnerability Research Team (VRT) is aware of vulnerabilities affecting the Squid Proxy Server and the Microsoft Windows Operating System.

Details:

Squid Proxy Server CVE-2007-0247: The Squid Proxy Server is prone to a Denial of Service (DoS) condition when handling malformed directory listing responses from remote FTP servers.

A rule to detect attacks targeting this vulnerability is included in this release and is identified as SID 10135.

Microsoft Security Bulletin MS06-032: The Microsoft Windows operating system is prone to a Denial of Service (DoS) condition that is caused by the improper handling of TCP/IP packets.

A shared object rule to detect attacks targeting this vulnerability is included in this release and is identified as GID 3 SID 10127.

Multiple rules have been added and modified to provide coverage for other threats.

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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.

About Sourcefire
Sourcefire, Inc. (Nasdaq: FIRE), Snort creator and open source innovator, is a world leader in Enterprise Threat Management (ETM) solutions. Sourcefire is transforming the way Global 2000 organizations and government agencies manage and minimize network security risks with its 3D Approach - Discover, Determine, Defend - to securing real networks. The Sourcefire 3D System is the first to unify IPS, NBA, NAC and Vulnerability Assessment technologies under the same management console. This ETM approach affords customers with an efficient and effective layered security defense - protecting network assets before, during and after an attack. Through the years, Sourcefire has been consistently recognized for its innovation and industry leadership by customers, media and industry analysts alike - with more than 30 awards and accolades. Recently, Sourcefire was positioned in the Leaders Quadrant of Gartner's "Magic Quadrant for Network Intrusion Prevention System Appliances 2H06" report, and the Sourcefire 3D System was named "Best Security Solution" at the 2006 SC Magazine Awards. Today, the names Sourcefire and founder Martin Roesch have grown synonymous with innovation and network security intelligence.

For more information about Sourcefire, please visit www.sourcefire.com.