VRT Advisories

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VRT Rules 2007-02-09

Sourcefire VRT Update

Date: 2007-02-09

Synopsis:

The Sourcefire Vulnerability Research Team (VRT) is aware of vulnerabilities affecting the Squid Proxy Server and the Microsoft Windows Operating System.

Details:

Squid Proxy Server CVE-2007-0247:
The Squid Proxy Server is prone to a Denial of Service (DoS) condition when handling malformed directory listing responses from remote FTP servers.

A rule to detect attacks targeting this vulnerability is included in this release and is identified as SID 10135.

Microsoft Security Bulletin MS06-032:
The Microsoft Windows operating system is prone to a Denial of Service (DoS) condition that is caused by the improper handling of TCP/IP packets.

A shared object rule to detect attacks targeting this vulnerability is included in this release and is identified as GID 3 SID 10127.

Multiple rules have been added and modified to provide coverage for other threats.

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 Feb 09, 2007



VRT Rules 2007-02-01

Sourcefire VRT Update

Date: 2007-02-01

Synopsis:

The Sourcefire Vulnerability Research Team (VRT) is aware of vulnerabilities affecting BrightStor ARCserve Backup and has added a number of rules to the specific-threats and backdoor categories.

Details:

BrightStor ARCserve CVE-2007-0169:
Computer Associates BrightStor ARCserve Backup Suite is vulnerable to multiple remote buffer-overflow attacks due to poor checking of user-supplied data to the application.

Rules to detect attacks targeting these vulnerabilities are included in this release and are identified as SIDs 10117 through 10122.

Specific Threats Update:
Multiple rules have been added in the specific-threats category to provide further coverage for the Peacomm trojan and problems relating to weak authentication with some Voice over IP (VoIP) telephones.

Rules to detect activity from the Peacomm trojan are included in this release and are identified as SIDs 10113 and 10114.

Rules to detect attempts to exploit VoIP telephones are included in this release and are identified as SIDs 10123 and 10124.

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 Feb 01, 2007



VRT Tool 2007-01-29

Sourcefire VRT Tool Update

Date: 2007-01-29

Synopsis:

The Sourcefire VRT has updated the OfficeCat tool to include coverage for recently announced vulnerabilities in Microsoft Word.

Details:

OfficeCat Update:
The OfficeCat tool has been updated to account for recently announced vulnerabilites in Microsoft Word. These vulnerabilities may be exploited by an attacker and could lead to the execution of arbitrary code on an affected system.

Microsoft is currently investigating reports of a new vulnerability in Word that may allow an attacker to execute code of their choosing on an affected system. Further details are available here.

The OfficeCat tool is able to process Word, Excel and PowerPoint files and will return the appropriate reference information should possible exploit conditions be present in the document.

OfficeCat Tool Download:

Download zip archive here.

Usage Instructions:

  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.

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 Jan 29, 2007



VRT Rules 2007-01-22

Sourcefire VRT Update

Date: 2007-01-22

Synopsis:

The Sourcefire Vulnerability Research Team (VRT) is aware of vulnerabilities affecting BrightStor ARCserve Backup and has added rules to the specific-threats category.

Details:

BrightStor ARCserve CVE-2007-0169:
Computer Associates BrightStor ARCserve backup suite is vulnerable to multiple remote buffer overflow attacks due to poor checking of user-supplied data to the application.

Rules to detect attacks targeting these vulnerabilities are included in this release and are identified as SIDs 10018 through 10061.

Specific Threats Update:
Multiple rules have been added in the specific-threats category to provide coverage for the the Peacomm trojan currently circulating via email. This trojan is known to communicate with other peers via UDP in order to create a botnet.

Rules to detect activity from this trojan are included in this release and are identified as SIDs 10065 through 10083.

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 Jan 22, 2007



VRT Tool 2007-01-11

Sourcefire VRT Tool Update

Date: 2007-01-11

Synopsis:

The Sourcefire VRT has updated the OfficeCat tool to include coverage for recently announced vulnerabilities in Microsoft Excel.

Details:

OfficeCat Update: The OfficeCat tool has been updated to account for recently announced vulnerabilites in Microsoft Excel. These vulnerabilities may be exploited by an attacker and could lead to the execution of arbitrary code on an affected system.

The OfficeCat tool is able to process Word, Excel and PowerPoint files and will return the appropriate reference information should possible exploit conditions be present in the document.

OfficeCat Tool Download:

Download zip archive here.

Usage Instructions:

  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.

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 Jan 11, 2007



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