VRT Advisories


VRT Rules 2012-03-13

Sourcefire VRT Rules Update

Date: 2012-03-13

Synopsis:

The Sourcefire VRT is aware of vulnerabilities affecting products from Microsoft Corporation.

Details:

Microsoft Security Advisory MS12-017:
The DNS protocol as implemented in Microsoft Windows systems may allow a remote attacker to cause a permanent Denial of Service (Dos) against an affected system.

A previously released rule will detect attacks targeting this vulnerability and has been updated with the appropriate reference information. It is included in this release and is identified with GID 1, SID 13949.

Microsoft Security Advisory MS12-020:
Microsoft Windows RemoteDesktop suffers from programming errors that may allow a remote attacker to execute code on a vulnerable system.

Rules to detect attacks targeting these vulnerabilities are included in this release and are identified with GID 1, SIDs 21570, 21571 and 21572.

Microsoft Security Advisory MS12-021:
Microsoft Visual Studio suffers from a programming error that may allow a remote attacker to elevate privileges on a vulnerable system.

A rule to detect attacks targeting this vulnerability is included in this release and is identified with GID 1, SID 21576.

Microsoft Security Advisory MS12-022:
Microsoft Expression Design suffers from a programming error that may allow a remote attacker to execute code on a vulnerable system.

Rules to detect attacks targeting this vulnerability are included in this release and are identified with GID 1, SIDs 21566 and 21567.

The Sourcefire VRT has also added and modified multiple rules in the backdoor, blacklist, botnet-cnc, dns, dos, exploit, file-identify, misc, netbios, policy, scada, specific-threats, web-activex, web-client and web-php rule sets to provide coverage for emerging threats from these technologies.

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.

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