VRT Advisories


June 2007 Archive

VRT Rules 2007-06-26

Sourcefire VRT Rules Update

Date: 2007-06-26

Synopsis:

The Sourcefire VRT is aware of vulnerabilities affecting Firebird SQL database server and Microsoft Internet Explorer.

Details:

Firebird SQL Remote Buffer Overflow (CVE-2007-3181):
Firebird SQL suffers from a programming error that may allow remote attackers to overflow a fixed length buffer and execute code on a vulnerable system.

A rule to detect attacks targeting this vulnerability is included in this release and is identified as SID 12009.

Microsoft Internet Explorer CSS Code Execution (CVE-2007-1750):
Microsoft Internet Explorer suffers from poor programming that may allow remote attackers to execute code by using a specially crafted Cascading Style Sheets (CSS) tag.

A rule to detect attacks targeting this vulnerability is included in this release and is identified as SID 11967.

Microsoft Internet Explorer URL Spoofing (CVE-2007-1499):
Microsoft Internet Explorer is vulnerable to phishing attacks when a URL is passed as an argument via a res: URI.

A rule to detect attacks targeting this vulnerability is included in this release and is identified as SID 12014.

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 Jun 26, 2007



VRT Rules 2007-06-19

Sourcefire VRT Rules Update

Date: 2007-06-19

Synopsis:

The Sourcefire VRT has added rules to the Backdoor and Spyware-put categories and has also improved detection functionality for the Samba call_trans2open buffer overflow vulnerability.

Details:

As a result of ongoing research, the Sourcefire VRT has added rules to the Backdoor and Spyware-put categories.

Samba call_trans2open Buffer Overflow (CVE-2003-0201):
The Sourcefire VRT has improved detection functionality for the Samba call_trans2open buffer overflow vulnerability.

The Samba network file server suffers from a programming error that may allow an attacker to execute code on a vulnerable host via a long pathname argument in a trans2open request.

Rules to detect attacks targeting this vulnerability are included in this release and are identified as SIDs 11955 through 11964.

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 Jun 19, 2007



VRT Rules 2007-06-13

Sourcefire VRT Rules Update

Date: 2007-06-13

Synopsis:

The Sourcefire VRT is aware of vulnerabilities affecting hosts using Microsoft products.

Details:

Microsoft Security Bulletin MS07-031:
The Windows Schannel Security Package may allow a remote attacker to execute code on an affected host. The issue occurs when processing certificate files during an SSL handshake.

A rule to detect attacks targeting this vulnerability is included in this release and is identified as SID 11947.

Microsoft Security Bulletin MS07-035:
The Microsoft Windows Win32 API fails to correctly handle user-supplied data. This may allow a remote attacker to execute code on a vulnerable system.

A rule to detect attacks targeting this vulnerability is included in this release and is identified as SID 11838.

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 Jun 13, 2007



VRT Rules 2007-06-12

Sourcefire VRT Rules Update

Date: 2007-06-12

Synopsis:

The Sourcefire VRT is aware of vulnerabilities affecting hosts using Microsoft products.

Details:

Microsoft Security Bulletin MS07-033:
Microsoft Internet Explorer suffers from multiple problems which may allow a remote attacker to execute code on an affected system.

COM Object Instantation Memory Corruption Vulnerability (CVE-2007-0218):
Multiple vulnerabilities exist in the way that Internet Explorer handles ActiveX controls. It may be possible for an attacker to instantiate COM objects on a vulnerable system by using an ActiveX control.

Rules to detect attacks targeting this vulnerability were previously released and are identified as SIDs 7904, 7905, 7928, 7929, 7934, 7935, 7938, 7939, 7942 through 7945 and SIDs 7958 and 7959.

Navigation Cancel Page Spoofing Vulnerability (CVE-2007-1752):
It may be possible for an attacker to display spoofed content in the Navigation cancelled information page in Internet Explorer. This may allow the attacker to execute code on an affected system.

A rule to detect attacks targeting this vulnerability is included in this release and is identified as SID 11834.

Speech Control Memory Corruption Vulnerability (CVE-2007-2222):
The Microsoft Speech API contains a programming error 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 as SIDs 11826 through 11833.

Microsoft Security Bulletin MS07-034:
Microsoft Mail fails to correctly handle UNC navigation requests. An attacker could utilize this vulnerability to execute code on an affected system.

A rule to detect attacks targeting this vulnerability is included in this release and is identified as SID 11837.

Microsoft Security Bulletin MS07-034:
Microsoft Visio fails to correctly validate the version number contained in a document. An attacker can utilize this flaw to execute code on an affected system.

A rule to detect attacks targeting this vulnerability is included in this release and is identified as SID 11836.

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 Jun 12, 2007



VRT Rules 2007-06-11

Sourcefire VRT Rules Update

Date: 2007-06-11

Synopsis:

The Sourcefire VRT is aware of vulnerabilities affecting Yahoo Messenger Webcam and Microsoft Office ActiveX controls.

Details:

Yahoo Messenger Webcam ActiveX Control (CVE-2007-3148 and CVE-2007-3147):
A buffer overflow condition in the Yahoo Messenger Webcam ActiveX control may allow remote attackers to execute code on an affected machine.

Rules to detect attacks targeting this vulnerability are included in this release and are identified as SIDs 11818 through 11825.

Microsoft Office 2000 ActiveX Control (CVE-2007-2903):
A buffer overflow condition in the Microsoft Office 2000 ActiveX control may allow remote attackers to cause a Denial of Service (DoS) against an affected host.

Rules to detect attacks targeting this vulnerability are included in this release and are identified as SIDs 11622 and 11623.

Numerous other new rules and modifications to existing rules are also included in this release.

Note: In order to use the rules for Snort version 2.6, the Snort version MUST be Snort 2.6.1.5. The rules for Snort CURRENT are for the Snort version from cvs HEAD.

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 Jun 11, 2007



VRT Tool 2007-06-04

Sourcefire VRT Tool Update

Date: 2007-06-04

Synopsis:

The Sourcefire VRT has updated the OfficeCat tool to provide coverage for a number of vulnerabilities affecting Microsoft Office document files.

Details:

The OfficeCat tool has been updated to provide coverage for the following vulnerabilities:

CVE-2006-0001 CVE-2006-3432 CVE-2006-3865 CVE-2006-4700 CVE-2006-4701 CVE-2006-5995

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 Jun 04, 2007