Vulnerabilities in Microsoft IIS, Microsoft Windows Firewall and the Microsoft .NET Framework

2007-07-10

Synopsis:

The Sourcefire VRT is aware of vulnerabilities affecting hosts using Microsoft IIS, Microsoft Windows Firewall and the Microsoft .NET Framework.

Details:

Microsoft Security Bulletin MS07-041: Microsoft Internet Information Services (IIS) contains a programming error that may allow an attacker to execute code on a vulnerable system. The problem occurs in the processing of URLs, in that a malformed request may cause a null pointer dereference and present the attacker with the opportunity to execute code in the context of the user running the service.

A rule to detect attacks targeting this vulnerability is included in this release and is identified as SID 12064.

Microsoft Security Bulletin MS07-040: The Microsoft .NET Framework suffers from a vulnerability that may allow a remote attacker to compromise a host using the Framework.

A previously released rule will detect attacks targeting this vulnerability and is identified as SID 11192.

Microsoft Security Bulletin MS07-038: The Microsoft Windows Firewall fails to correctly handle IPv6 packets when tunnelled over UDP to traverse an IPv4 Network Address Translation. This may allow an attacker to initiate network communications with a host and bypass any Microsoft Windows based firewalls in the process.

Rules to detect attacks targeting this vulnerability are included in this release and are identified as SIDs 12065 through 12068.

Additionally, SID 8446 may also generate events on IPv6 traffic encapsulated in IPv4.

For Assistance:

• Visit the Sourcefire Customer Support site at https://support.sourcefire.com.
• Email Sourcefire Customer Support at support@sourcefire.com.
• Call Sourcefire Customer Support at 410.423.1901 or 1.800.917.4134.

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.