VRT Advisories


VRT Rules 2011-12-13

Sourcefire VRT Rules Update

Date: 2011-12-13

Synopsis:

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

Details:

Microsoft Security Advisory MS11-087:
A vulnerability exists in the way that Microsoft Windows systems process TrueType font files 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 20735.

Microsoft Security Advisory MS11-089:
Microsoft Office 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 20724 and 20734.

Microsoft Security Advisory MS11-090:
A vulnerability exists in the way that Microsoft Internet Explorer handles ActiveX objects that may allow a remote attacker to execute code on an affected system.

Rules to detect attacks targeting this vulnerability are included in this release and are identified with GID 1, SIDs 20704 through 20716.

Microsoft Security Advisory MS11-091:
Microsoft Publisher contains programming errors that may allow a remote attacker to elevate privileges on an affected host.

Rules to detect attacks targeting these vulnerabilities are included in this release and are identified with GID 1, SIDs 20719 through 20721.

Microsoft Security Advisory MS11-093:
The Microsoft Windows Object Linking and Embedding (OLE) framework contains a vulnerability 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 20717.

Microsoft Security Advisory MS11-094:
Microsoft PowerPoint 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 20700 through 20703 and SID 20722.

Microsoft Security Advisory MS11-096:
A vulnerability exists in Microsoft Excel 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 20718.

Microsoft Security Advisory MS11-099:
Microsoft Windows contains programming errors that may allow a remote attacker to execute code on an affected system.

A rule to detect attacks targeting these vulnerabilities is included in this release and is identified with GID 1, SID 20699.

Additionally, previously released rules will also detect attacks targeting this vulnerability and are included in this release with updated reference information. They are identified with GID 1, SIDs 18208 and 18209.

The Sourcefire VRT has added and modified multiple rules in the backdoor, bad-traffic, blacklist, botnet-cnc, chat, ddos, dns, dos, exploit, file-identify, ftp, imap, misc, multimedia, mysql, netbios, oracle, p2p, phishing-spam, policy, pop3, rservices, specific-threats, spyware-put, sql, telnet, voip, web-activex, web-cgi, web-client, web-iis 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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