VRT Advisories


VRT Rules 2008-02-26

Sourcefire VRT Rules Update

Date: 2008-02-26

Synopsis:

The Sourcefire VRT is aware of vulnerabilities affecting Apple QuickTime and Citrix MetaFrame.

Details:

Apple QuickTime Buffer Overflow (CVE-2008-0033):
Apple QuickTime contains a buffer overflow condition that may allow a remote attacker to execute code on a vulnerable system. The problem occurs when QuickTime attempts to process malformed movie files that contain an invalid Image Descriptor atom size.

A rule to detect attacks targeting this vulnerability is included in this release and is identified as SID 13517.

Apple QuickTime Buffer Overflow (CVE-2008-0234):
Apple QuickTime contains a buffer overflow condition that may allow a remote attacker to execute code on a vulnerable system. The problem occurs when QuickTime attempts to process a long Reason-Phrase response to an rtsp request.

A rule to detect attacks targeting this vulnerability is included in this release and is identified as SID 13516.

Citrix MetaFrame Buffer Overflow (CVE-2008-0356):
Citrix MetaFrame Presentation Server contains a buffer overflow condition that may allow a remote attacker to execute code on an affected system. The problem occurs when the service attempts to process TCP packets containing an invalid size value.

A rule to detect attacks targeting this vulnerability is included in this release and is identified as SID 13519.

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.