Vulnerability in Microsoft Excel, Spyware and Backdoor Rule Updates
2007-08-01
Synopsis:
The Sourcefire VRT is aware of a vulnerability affecting hosts using Microsoft Excel. This release also includes additions to the spyware-put and backdoor rule categories.
Details:
Microsoft Security Bulletin MS07-036:
A memory corruption vulnerability exists in the way Microsoft Excel processes files. The vulnerability is a result of insufficient data validation while processing the Version field in a BOF record. A remote attacker can exploit this vulnerability by enticing the target user to open a crafted Excel file, potentially causing arbitrary code to be injected and executed in the security context of the current user.
A rule to detect attacks targeting this vulnerability is included in this release and is identified as SID 12184.
In addition, as a result of ongoing research, the VRT has added rules to the backdoor and spyware-put rule categories.
For Assistance:
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.
