VRT Advisories

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VRT Rules 2008-03-11

Sourcefire VRT Rules Update

Date: 2008-03-11

Synopsis:

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

Details:

Microsoft Security Bulletin (MS08-014):
Microsoft Excel suffers from multiple vulnerabilities, the most serious of which may allow a remote attacker to execute code on a vulnerable system.

Rules to detect attacks targeting this vulnerability are included in this release and are identified with GID 3, SIDs 13569 through 13571 and 13582. Additional rules to detect attacks targeting these vulnerabilities are also in this release and are identified with GID 1 and SIDs 13583 through 13585.

Microsoft Security Bulletin (MS08-015):
Microsoft Outlook does not correctly handle user-supplied input to mailto URIs. This 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 3 and SID 13573.

Microsoft Security Bulletin (MS08-016):
Microsoft Office does not correctly handle malformed PowerPoint files. This 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 3 and SID 13572.

Microsoft Security Bulletin (MS08-017):
Microsoft Office Web Components suffer from multiple vulnerabilities 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 with GID 3, SIDs 13580 and 13581. Additionally, previously released rules will also detect attempts to attack these vulnerabilities and are identified with GID 1 and SIDs 4170, 4177, 7870, 7871 and 13468.

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 Mar 11, 2008



VRT Rules 2008-03-06

Sourcefire VRT Rules Update

Date: 2008-03-06

Synopsis:

This is a rule maintenance release. There are no new rules in this release.

Details:

This is a rule maintenance release. There are no new rules in this release.

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 Mar 06, 2008



VRT Rules 2008-03-04

Sourcefire VRT Rules Update

Date: 2008-03-04

Synopsis:

The Sourcefire VRT has added multiple rules in the spyware-put and web-client categories to provide coverage for emerging spyware and ActiveX control threats.

Details:

As a result of ongoing research, the Sourcefire VRT has added multiple rules to the spyware-put and web-client 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 Mar 04, 2008



VRT Rules 2008-02-26

Sourcefire VRT Rules Update

Date: 2008-02-26

Synopsis:

The Sourcefire VRT is aware of vulnerabilities affecting Apple QuickTime and Citrix MetaFrame.

Details:

Apple QuickTime Buffer Overflow (CVE-2008-0033):
Apple QuickTime contains a buffer overflow condition that may allow a remote attacker to execute code on a vulnerable system. The problem occurs when QuickTime attempts to process malformed movie files that contain an invalid Image Descriptor atom size.

A rule to detect attacks targeting this vulnerability is included in this release and is identified as SID 13517.

Apple QuickTime Buffer Overflow (CVE-2008-0234):
Apple QuickTime contains a buffer overflow condition that may allow a remote attacker to execute code on a vulnerable system. The problem occurs when QuickTime attempts to process a long Reason-Phrase response to an rtsp request.

A rule to detect attacks targeting this vulnerability is included in this release and is identified as SID 13516.

Citrix MetaFrame Buffer Overflow (CVE-2008-0356):
Citrix MetaFrame Presentation Server contains a buffer overflow condition that may allow a remote attacker to execute code on an affected system. The problem occurs when the service attempts to process TCP packets containing an invalid size value.

A rule to detect attacks targeting this vulnerability is included in this release and is identified as SID 13519.

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 26, 2008



VRT Rules 2008-02-20

Sourcefire VRT Rules Update

Date: 2008-02-20

Synopsis:

The Sourcefire VRT is aware of vulnerabilities affecting Adobe Acrobat, Adobe Acrobat Reader and Microsoft Active Directory.

Details:

Adobe Acrobat and Adobe Acrobat Reader (CVE-2008-0655):
Adobe Acrobat and Adobe Acrobat Reader are prone to multiple 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 as SIDs 13477 and 13478.

Microsoft Security Bulletin (MS08-003):
A vulnerability in Active Directory may allow a remote attacker to cause a Denial of Service (DoS) condition on a vulnerable host.

A shared object rule to detect attacks targeting this vulnerability is included in this release and is identified with GID 3 and SID 13475.

Note:
The detection functionality in SID 13475 is only available when using Snort version 2.8.0.2. This rule will not work with prior versions of Snort.

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 20, 2008



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