VRT Advisories

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VRT Rules 2006-09-12

Sourcefire VRT Advisory

Date: 2006-09-12

Synopsis:

The Sourcefire VRT has continued research into a vulnerability affecting Microsoft Office documents and has updated the DocCheck tool to process xls files to determine the presence of an exploit.

Note:The DocCheck tool has also been renamed to OfficeCat to reflect the more global nature of the problem.

Details:

Microsoft Security Advisory (925059)
Microsoft Word contains a programming error that can allow a remote attacker to run code of their choosing on an affected host system via the processing of a malformed .doc file.

The OfficeCat tool has been updated to process Microsoft Office files to determine if the file contains possible exploit code for this vulnerability.

DocCheck tool download

download zip archive here

Instructions for use

  1. Unzip the archive
  2. Open a command shell
  3. Execute the tool executable with a document name for checking

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.

Posted by on Sep 12, 2006



Community 2006-09-05

Sourcefire Community Rule Update 2006-09-05

Sourcefire Community Rule Update

Date: 2006-09-05

This message is to announce the availability of an update for the Sourcefire community rule set, which can be downloaded free of cost or registration from http://www.snort.org/pub-bin/downloads.cgi.

New rules in this release are identified as SIDs 100000874-100000891. These rules cover detection of TOR and Google Talk traffic, which may be policy violations in some environments cross-site scripting attempts against the Roller Weblog system a buffer overflow attempt against ImageMagick remote file inclusion attacks against PHP Live Helper and Inlink SQL injection against SimpleBlog and other attacks against the pHNews, Proxima, pmwiki, tikiwiki, yappa-ng, and Webmin/Usermin systems.

Sourcefire would like to thank the following submitters for their contributions:

* Dan Ramaswami for SIDs 100000874-100000875 * Will Young for 100000876-100000877 * p3rlhax@gmail.com for SIDs 100000878-100000880

Community Rule Pack Update Summary:

For a complete list of new and modified rules use this link.

To submit rules to the Community rule set use this link.

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.

About Sourcefire

Sourcefire, Inc., the world leader in intrusion prevention, is transforming the way organizations manage and minimize network security risks with its 3D Approach - Discover, Determine, Defend - to securing real networks in real-time. For more information about Sourcefire, please visit www.sourcefire.com.

Posted by on Sep 05, 2006



VRT Rules 2006-09-01

Sourcefire VRT Update

Date: 2006-09-01

Synopsis:

The Sourcefire VRT has continued research into vulnerabilities affecting Microsoft Internet Explorer and has also added multiple new rules in the spyware-put category. The VRT has also improved the performance of multiple rules and has improved reference information for multiple rules.

Details:

Multiple vulnerabilities exist in the way that Microsoft Internet Explorer handles ActiveX controls. It may be possible for an attacker to execute code of their choosing on a system using Internet Explorer.

Rules to detect attacks against these vulnerabilities are included in this rule pack and are identified as sids 7862 through 8058.

As a result of continuing research in the field of Spyware and potentially unwanted technology, the Sourcefire VRT has added multiple rules to the Spyware and Backdoor rule sets.

Each rule is also accompanied by detailed documentation for each Trojan, Spyware and potentially unwanted software to assist in determining the likelihood of infection and has relevant links to information regarding their removal.

These rules are identified as sids 7794 through 7857.

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.

Posted by on Sep 01, 2006



VRT Rules 2006-08-22

Sourcefire VRT Update

Date: 2006-08-22

Synopsis:

The Sourcefire VRT has added multiple rules to detect the use of Spyware and potentially unwanted technology on a network.

Details:

As a result of continuing research in the field of Spyware and potentially unwanted technology, the Sourcefire VRT has added multiple rules to the Spyware and Backdoor rule sets.

Each rule is also accompanied by detailed documentation for each Trojan, Spyware and potentially unwanted software to assist in determining the likelihood of infection and has relevant links to information regarding their removal.

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.

Posted by on Aug 22, 2006



VRT Rules 2006-08-11

Sourcefire VRT Update

Date: 2006-08-11

Synopsis:

The Sourcefire VRT has continued research into the recently announced vulnerabilities in the Microsoft Windows operating system and has modified rules to improve performance.

Details:

Microsoft Security Bulletin MS06-040 A buffer overflow condition in the Microsoft Windows Server Service may allow a remote attacker to execute code of their choosing on a target system. The overflow condition can be triggered by malformed requests to the service accessing certain functions.

Rules to detect attacks against these vulnerabilities are included in this rule pack and are identified as sids 7209 through 7304.

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.

Posted by on Aug 11, 2006



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