VRT Advisories

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VRT Rules 2009-09-01

Sourcefire VRT Rules Update

Date: 2009-09-01

Synopsis:

This release adds and modifies rules in several categories.

Details:

Microsoft IIS FTP Buffer Overflow: The Microsoft FTP module for Internet Information Services (IIS) contains a programming error that may allow a remote attacker to execute code on an affected system. The problem occurs in the processing of specially crafted directory names which an attacker can leverage to cause a stack-based buffer overflow.

Previously released rules will detect attacks targeting this vulnerability and are identified with GID 1, SIDs 1529, 1973, 2374 and 3441. Additionally, the FTP Telnet preprocessor will detect attacks targeting this vulnerability. These events are identified with GID 125, SIDs 3, 6 and 8.

Additionally, as a result of ongoing research, the Sourcefire VRT has added multiple rules to the web-activex, web-client, specific-threats, shellcode and bad-traffic 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 Sep 01, 2009



VRT Rules 2009-08-25

Sourcefire VRT Rules Update

Date: 2009-08-25

Synopsis:

This release adds and modifies rules in several categories.

Details:

As a result of ongoing research, the Sourcefire VRT has added multiple rules to the web-activex, web-misc, specific-threats, exploit and chat 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 Aug 25, 2009



VRT Rules 2009-08-18

Sourcefire VRT Rules Update

Date: 2009-08-18

Synopsis:

This release adds and modifies rules in several categories.

Details:

As a result of ongoing research, the Sourcefire VRT has added multiple rules to the web-client, web-misc and sql 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 Aug 18, 2009



VRT Rules 2009-08-11

Sourcefire VRT Rules Update

Date: 2009-08-11

Synopsis:

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

Details:

Microsoft Security Advisory (MS09-036):
Microsoft Internet Information Server (IIS) contains a programming error that may allow a remote attacker to cause a Denial of Service (DoS) against a vulnerable system.

A rule to detect attacks targeting this vulnerability is included in this release and is identified with GID 3, SID 15851.

Microsoft Security Advisory (MS09-037):
The Microsoft Active Template Library contains programming errors that may allow a remote attacker to execute code on a vulnerable system.

Previously released rules to detect attacks targeting this vulnerability are included in this release with updated references, and are identified with GID 1, SIDs 15638 through 15671.

Microsoft Security Advisory (MS09-038):
The Microsoft Windows AVIFile API contains a programming error that 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 15854 and 15857.

Microsoft Security Advisory (MS09-039):
The Microsoft Windows Internet Naming Service (WINS) contains a programming error that 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 15848 and 15849.

Microsoft Security Advisory (MS09-041):
The Microsoft Windows Workstation Service contains a programming error that 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 with GID 3, SID 15860.

Microsoft Security Advisory (MS09-042):
The Microsoft Windows Telnet implementation suffers from a programming error that may allow a remote attacker to execute code on an affected system. The problem occurs due to the improper processing of NTLM credentials.

A Rule to detect attacks targeting this vulnerability is included in this release and is identified with GID 3, SID 15847.

Microsoft Security Advisory (MS09-043):
Microsoft Office Web Components contain multiple vulnerabilities that may allow a remote attacker to execute code on an affected system.

Rules to detect attacks targeting these vulnerabilities are included in this release and are identified with GID 3, SIDs 15685 through 15692 and GID 1, SIDs 15852, 15853, 15855 and 15856.

Previously released rules to detect attacks targeting this vulnerability are included in this release with updated references, and are identified with GID 1, SIDs 7872 and 7873.

Microsoft Security Advisory (MS09-044):
Microsoft Remote Desktop Connection contains programming errors 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 15850 and 15861 through 15864.

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 Aug 11, 2009



VRT Rules 2009-07-29

Sourcefire VRT Rules Update

Date: 2009-07-29

Synopsis:

The Sourcefire VRT is aware of a vulnerability affecting ISC BIND.

Details:

ISC BIND Dynamic Update DoS (CVE-2009-0696):
The ISC BIND daemon suffers from programming errors that may allow a remote attacker to cause a Denial of Service (DoS) attack against a vulnerable system. The problem applies to DNS servers using BIND that are configured to be the master server for a zone.

A rule to detect attacks targeting this vulnerability is included in this release and is identified with GID 3, SID 15734.

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 Jul 29, 2009



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