VRT Advisories

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VRT Rules 2013-07-18

Sourcefire VRT Rules Update

Date: 2013-07-18

Synopsis:

This release includes an updated detection engine and also adds and modifies rules in several categories.

Details:

The Sourcefire VRT has added and modified multiple rules in the browser-ie, browser-plugins, exploit-kit, file-office, file-pdf, malware-other, os-windows, protocol-dns and server-webapp 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.

why subscribe? || download rules

Posted by on Jul 18, 2013



VRT Rules 2013-07-16

Sourcefire VRT Rules Update

Date: 2013-07-16

Synopsis:

This release adds and modifies rules in several categories.

Details:

The Sourcefire VRT has added and modified multiple rules in the blacklist, browser-ie, browser-plugins, exploit-kit, file-flash, file-java, file-office, file-other, indicator-compromise, malware-cnc, malware-other, os-linux, os-windows, policy-social, protocol-imap, server-oracle, server-other 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.

why subscribe? || download rules

Posted by on Jul 16, 2013



VRT Rules 2013-07-11

Sourcefire VRT Rules Update

Date: 2013-07-11

Synopsis:

This release contains an update to the Security over Connectivity base policy and also adds and modifies rules in several categories.

Details:

The Sourcefire VRT has added and modified multiple rules in the browser-ie, browser-plugins, deleted, file-other, malware-cnc and server-webapp rule sets to provide coverage for emerging threats from these technologies.

Policy Changes:

Impact

Under some circumstances, this update may result in a performance change. If you are using the “Security over Connectivity” policy as your base policy, we ask that you review the changes below before re-applying your policies as they may have an effect on the current performance of a sensor.

Policies that will be affected:

Those policies that create or have created a policy based on the Security over Connectivity base layer.

Those policies that have not modified any of the following settings manually.

Changes

The following changes have been made:

HTTP Preprocessor

The HTTP Inspect setting “server_flow_depth” will increase from 0 to 1460

The HTTP Inspect setting “chunk_size” will increase from 10 to 500000

The HTTP Inspect setting “compress_depth” will increase from 1460 to 20000

The HTTP Inspect setting “decompress_depth” will increase from 2920 to 20000

The HTTP Inspect setting “extended_response_inspection” is currently off, this setting will be enabled.

The HTTP Inspect setting “inspect_gzip” is currently off, this setting will be enabled.

Stream Preprocessor

The Stream Preprocessor setting “detect_anomalies” is currently off, this setting will be enabled.

The Stream Preprocessor setting “require_3whs” will increase from 0 to 180

The Stream Preprocessor setting “small_segments” is currently off, this setting will be enabled.

Variables

ORACLE_PORTS will change from “[1521,1526]” to “[1024:]”

GTP_PORTS will increase from “[2123,3386]” to “[2123,2152,3386]”

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.

why subscribe? || download rules

Posted by on Jul 11, 2013



VRT Rules 2013-07-09

Sourcefire VRT Rules Update

Date: 2013-07-09

Synopsis:

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

Details:

Microsoft Security Advisory MS13-052:
Programming errors in the .NET Framework and Silverlight may lead to remote code execution.

Rules to detect attacks targeting these vulnerabilities are included in this release and are identified with GID 1, SIDs 27136 and 27139.

Microsoft Security Advisory MS13-055:
Internet Explorer suffers from programming errors that may lead to remote code execution.

Rules to detect attacks targeting these vulnerabilities are included in this release and are identified with GID 1, SIDs 27126 through 27135, 27137 through 27138, 27147 through 27154, and 27156 through 27157.

The Sourcefire VRT has also added and modified multiple rules in the blacklist, browser-ie, browser-plugins, deleted, dos, exploit-kit, file-multimedia, file-office, file-other, file-pdf, malware-backdoor, malware-cnc, malware-other, os-mobile, os-windows, protocol-ftp, protocol-tftp and server-webapp 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.

why subscribe? || download rules

Posted by on Jul 09, 2013



VRT Rules 2013-07-02

Sourcefire VRT Rules Update

Date: 2013-07-02

Synopsis:

This release adds and modifies rules in several categories.

Details:

The Sourcefire VRT has added and modified multiple rules in the app-detect, blacklist, browser-ie, deleted, exploit-kit, file-java, file-other, indicator-compromise, indicator-obfuscation, indicator-shellcode, malware-cnc, malware-other, malware-tools, netbios, os-mobile, os-other, protocol-tftp, server-other 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.

why subscribe? || download rules

Posted by on Jul 02, 2013



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