VRT Advisories


December 2008 Archive

VRT Rules 2008-12-23

Sourcefire VRT Rules Update

Date: 2008-12-23

Synopsis:

The Sourcefire VRT has added multiple rules in the web-activex, specific-threats, web-client and exploit categories to provide coverage for emerging threats from these technologies.

Details:

As a result of ongoing research, the Sourcefire VRT has added multiple rules to the web-activex, specific-threats, web-client and backdoor 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.

Posted by on Dec 23, 2008



VRT Rules 2008-12-16

Sourcefire VRT Rules Update

Date: 2008-12-16

Synopsis:

The Sourcefire VRT is aware of vulnerabilities affecting Oracle and CUPS.

Details:

Oracle Internet Directory Denial of Service (CVE-2008-2595):
Oracle Internet Directory contains a programming error that may allow a remote attacker to cause a Denial of Service (DoS) against the application. This issue does not require authentication.

A rule to detect attacks targeting this vulnerability is included in this release and is identified with GID 3, SID 15149.

CUPS Integer Overflow (CVE-2008-5286):
A vulnerability in the _cupsImageReadPNG function in CUPS may allow a remote attacker to execute code on a vulnerable system.

Rules to detect attacks targeting these vulnerabilities are included in this release and are identified with GID 1, SIDs 15145 and 15146.

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 Dec 16, 2008



VRT Tool 2008-12-12

Sourcefire VRT Tool Tool Update

Date: 2008-12-12

Synopsis:

The OfficeCat tool has been updated to include detection for a vulnerability in the Microsoft WordPad Text Converter for Word 97 files.

Details:

The OfficeCat tool has been updated to include detection for a vulnerability in the Microsoft WordPad Text Converter for Word 97 files. This vulnerability is identified with the CVE reference 2008-4841.

Please send feature requests and bug reports via email to vrt@sourcefire.com. Post cards and beer can be sent to the Sourcefire VRT, 9780 Patuxent Woods Drive, Columbia, MD 21045, USA.

Additionally, malware samples would be most appreciated, please contact vrt@sourcefire.com if you have some to share.

The OfficeCat tool is able to process Word, Excel, Publisher, Project 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 Dec 12, 2008



VRT Rules 2008-12-11

Sourcefire VRT Rules Update

Date: 2008-12-11

Synopsis:

The Sourcefire VRT is aware of multiple vulnerabilities affecting Microsoft products.

Details:

Microsoft Security Advisory (961051):
Microsoft Internet Explorer is vulnerable to an attack 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 15126.

Microsoft SQL Server Buffer Overflow (CVE-2008-5416):
A vulnerability in Microsoft SQL Server may allow a remote attacker to execute code on a vulnerable system. This issue may be exploited via the sp_replwritetovarbin stored procedure.

Rules to detect attacks targeting these vulnerabilities are included in this release and are identified with GID 1, SIDs 15127 through 15144.

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 Dec 11, 2008



VRT Rules 2008-12-09

Sourcefire VRT Rules Update

Date: 2008-12-09

Synopsis:

The Sourcefire VRT is aware of multiple vulnerabilities affecting Microsoft products.

Details:

Microsoft Security Advisory MS08-070:
Microsoft Visual Basic ActiveX controls contain vulnerabilities that may allow a remote attacker to execute code on a vulnerable system.

Rules to detect attacks targeting these vulnerabilities are included in this release and are identified with GID 3, SIDs 15084 through 15104 and 15118 through 15121.

Microsoft Security Advisory MS08-071:
A vulnerability in Microsoft GDI may allow a remote attacker to execute code on a vulnerable system via specially crafted WMF file.

A rule to detect attacks targeting this vulnerability is included in this release and is identified with GID 3, SID 15105.

Microsoft Security Advisory MS08-072:
Microsoft Word contains several vulnerabilities that may allow a remote attacker to execute code on a vulnerable system.

Rules to detect attacks targeting these vulnerabilities are included in this release and are identified with GID 3, SIDs 15082 through 15083, 15106 through 15107 and 15125.

Microsoft Security Advisory MS08-073:
Microsoft Internet Explorer contains several vulnerabilities that may allow a remote attacker to execute code on a vulnerable system.

Rules to detect attacks targeting these vulnerabilities are included in this release and are identified with GID 3, SIDs 15109 through 15115 and 15122.

Microsoft Security Advisory MS08-074:
Microsoft Excel contains several vulnerabilities that may allow a remote attacker to execute code on a vulnerable system.

A rule to detect attacks targeting these vulnerabilities is included in this release and is identified with GID 3, SID 15117.

Additionally, a previously released rule identified with GID 3, SID 13972 will also generate events for attacks targeting these vulnerabilities.

Microsoft Security Advisory MS08-075:
Microsoft Windows contains a vulnerability 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 3, SID 15116.

Additionally, a previously released rule identified with GID 1, SID 13911 will also generate events for attacks targeting these vulnerabilities.

Microsoft Security Advisory MS08-076:
Microsoft Windows Media Components contains a vulnerability that may allow a remote attacker to execute code on a vulnerable system.

A rule to detect attacks targeting these vulnerabilities is included in this release and is identified with GID 3, SID 15124.

Microsoft Security Advisory MS08-077:
Microsoft Sharepoint Server contains a vulnerability that may allow a remote attacker to access critical data and possibly escalate privileges.

A rule to detect attacks targeting these vulnerabilities is included in this release and is identified with GID 3, SID 15108.

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 Dec 09, 2008



VRT Tool 2008-12-09

Sourcefire VRT Tool Tool Update

Date: 2008-12-09

Synopsis:

The OfficeCat tool has been updated to include detection for vulnerabilities in Microsoft Word.

Details:

The OfficeCat tool has been updated to include detection for a vulnerability in Microsoft Word. This vulnerability is identified with the CVE references 2008-4024, 2008-4026, 2008-4837 and Microsoft Security Bulletin MS08-072.

Please send feature requests and bug reports via email to vrt@sourcefire.com. Post cards and beer can be sent to the Sourcefire VRT, 9780 Patuxent Woods Drive, Columbia, MD 21045, USA.

Additionally, malware samples would be most appreciated, please contact vrt@sourcefire.com if you have some to share.

The OfficeCat tool is able to process Word, Excel, Publisher, Project 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 Dec 09, 2008