VRT Advisories


VRT Rules 2012-04-10

Sourcefire VRT Rules Update

Date: 2012-04-10

Synopsis:

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

Details:

Microsoft Security Bulletin MS12-023:
Microsoft Internet Explorer suffers from programming errors that may allow a remote attacker to execute code on an affected system.

Rules to detect attacks targeting these vulnerabilities are included in this release and are identified with GID 1, SIDs 21793 and 21796.

Microsoft Security Bulletin MS12-024:
The Microsoft Windows Authenticode verification system contains a programming error that may allow a remote attacker to include executable code in an application while keeping the digital signature intact.

A rule to detect attacks targeting this vulnerability is included in this release and is identified with GID 1, SID 21795.

Microsoft Security Bulletin MS12-025:
The Microsoft .NET framework incorrectly validates some parameters used in processing image data. This may allow a remote attacker to execute code on an affected system.

A rule to detect attacks targeting this vulnerability is included in this release and is identified with GID 1, SID 21792.

Microsoft Security Bulletin MS12-027:
The Microsoft Windows Common Controls ActiveX DLL (MSCOMCTL) contains programming errors that may allow a remote attacker to execute code on an affected system.

Rules to detect attacks targeting these vulnerabilities are included in this release and are identified with GID 1, SIDs 21797 through 21801.

Microsoft Security Bulletin MS12-028:
The Microsoft Office WPS converter contains a programming error that may allow a remote attacker to execute code on an affected system.

A rule to detect attacks targeting this vulnerability is included in this release and is identified with GID 1, SID 21794.

Additionally, the Sourcefire VRT has added and modified multiple rules in the backdoor, botnet-cnc, dns, dos, exploit, file-identify, file-office, file-other, file-pdf, netbios, policy, pop3, rpc, scada, shellcode, smtp, specific-threats, sql, voip, web-activex and web-misc 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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