VRT Advisories

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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



VRT Rules 2007-01-04

Sourcefire VRT Update

Date: 2007-01-04

Synopsis:

The Sourcefire VRT is aware of multiple vulnerabilities affecting RealPlayer, Microsoft Outlook, Apple Quicktime, Yahoo Messenger and Symantec Veritas NetBackup. New rules have been introduced to provide coverage for exploitation attempts targeting these vulnerabilities.

Details:

Apple QuickTime RTSP Buffer Overflow CVE-2007-0015:
Apple QuickTime suffers from a programming error that may allow a remote attacker to overflow a fixed length buffer and execute code of their choosing on a vulnerable system. The condition is present in the processing of rtsp uri parameters.

A rule to detect attacks targeting this vulnerability is included in this release and is identified as SID 9823.

Apple QuickTime Security Bypass CVE-2006-4965:
It may be possible for a remote attacker to execute arbitrary code by using a QuickTime Media Link (QTL) file. This file may contain elements that could call on external scripts to be executed on the vulnerable machine.

Rules to detect attacks targeting this vulnerability are included in this release and are identified as SIDs 9428 and 9430.

Apple QuickTime HREFTrack Scripting: Apple QuickTime is prone to a scripting attack via the use of the HREFTrack parameter in a media file (.mov). A remote attacker could make use of this vulnerability to perform a cross site or cross zone scripting attack against a vulnerable machine.

A rule to detect attacks targeting this vulnerability is included in this release and is identified as SID 9840.

Microsoft Outlook Denial of Service CVE-2006-6659:
Microsoft Outlook is prone to a Denial of Service (DoS) attack via the Recipient ActiveX control. An attacker would need to supply a malicious HTML file to be viewed using Microsoft Outlook.

Rules to detect attacks targeting this vulnerability are included in this release and are identified as SIDs 9668 through 9670.

RealNetworks RealPlayer Denial of Service CVE-2006-6847:
RealPlayer is prone to a Denial of Service (DoS) when supplied with a long argument via the ActiveX control that invokes RealPlayer in a browser session.

Rules to detect attacks targeting this vulnerability are included in this release and are identified as SIDs 9671 through 9673.

Symantec Veritas NetBackup Buffer Overflow CVE-2006-5822:
The Symantec Veritas NetBackup daemon suffers from a programming error that may allow a remote attacker to overflow a fixed length buffer and execute code of their choosing on an affected system.

A rule to detect attacks targeting this vulnerability is included in this release and is identified as SID 9813.

Yahoo Messenger Remote Code Execution CVE-2006-6603:
Yahoo Messenger is prone to a buffer overflow condition in the ActiveX control YMailAttach. A remote attacker may be able to execute arbitrary code by passing excess data to the control via a crafted HTML file.

Rules to detect attacks targeting this vulnerability are included in this release and are identified as SIDs 9783, 9784 and 9812.

The Sourcefire VRT has also made additions to the spyware-put and backdoor rules categories as a result of ongoing research. Extensive modifications and rule additions have also been made to the netbios rules category.

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 04, 2007



VRT Rules 2006-12-15

Sourcefire VRT Update

Date: 2006-12-15

Synopsis:

This release provides a new "specific-threats" rules category.

Details:

The Sourcefire VRT has added a new rules category named "specific-threats" that is designed to give specific event information when activity relating to known worms is identified in network data.

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 15, 2006



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