VRT Advisories

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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



VRT Rules 2007-01-10

Sourcefire VRT Update

Date: 2007-01-10

Synopsis:

The Sourcefire Vulnerability Research Team (VRT) has continued research into vulnerabilities affecting Microsoft Outlook and Microsoft Internet Explorer.

Details:

Microsoft Security Bulletin MS07-003:
Microsoft Outlook suffers from a programming error that may allow an attacker to execute arbitrary code. This problem arises when Outlook tries to process a malformed saved search file (.oss).

A rule to detect attacks targeting this vulnerability is included in this release and is identified as SID 9847.

Microsoft Security Bulletin MS07-004:
Microsoft Internet Explorer contains a programming error that may lead to an integer overflow condition. A remote attacker may be able to execute code on an affected machine by hosting a web page which has properties that could cause the overflow to occur.

Rules to detect attacks targeting this vulnerability are included in this release and are identified as SIDs 9848 and 9849.

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 10, 2007



VRT Rules 2007-01-09

Sourcefire VRT Update

Date: 2007-01-09

Synopsis:

The Sourcefire Vulnerability Research Team (VRT) has discovered a serious vulnerability affecting Microsoft Outlook and is aware of a vulnerability affecting Adobe Acrobat Reader.

Details:

Microsoft Security Bulletin MS07-003:
The Sourcefire VRT has discovered a remotely exploitable vulnerability in Microsoft Outlook when it is used to process iCal calendar requests. iCal files may be used in meeting requests and can be sent to recipients using email. Included in an iCal request is time zone data that is used on the system to automatically populate the calendar in Outlook with the contents of the file.

An error in the processing of time zone data in a VEVENT record of an iCal file may allow a remote attacker to execute arbitrary code on a vulnerable system with the privileges of the current user. This may lead to the complete compromise of an affected host.

A rule to detect attacks targeting this vulnerability is included in this release and is identified as SID 9841.

Adobe Acrobat Reader Plugin CVE-2007-0046:
The Adobe Acrobat Reader Plugin does not correctly process user-supplied input in the parameters supplied to a URI. This may allow a remote attacker to execute arbitrary code on an affected system.

Rules to detect attacks targeting this vulnerability are included in this release and are identifed as SIDs 9842 and 9843.

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 09, 2007



VRT Tool 2007-01-08

Sourcefire VRT Tool Update

Date: 2007-01-08

Synopsis:

The Sourcefire VRT has updated the OfficeCat tool to include updated CVE references.

Details:

OfficeCat Update:
The OfficeCat tool has been updated to include more CVE references when reporting possible exploit conditions in a document.

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 08, 2007



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