VRT Advisories

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VRT Rules 2007-03-22

Sourcefire VRT Update

Date: 2007-03-22

Synopsis:

The Sourcefire VRT is aware of vulnerabilities affecting Microsoft Windows Server Service Controller, McAfee ePolicy Orchestrator and Symantec SupportSoft ActiveX controls.

Details:

Microsoft Windows Server Service Controller: The Server Service Controller is prone to a buffer overflow vulnerability that may allow an attacker to take complete control of the target host. Insufficient checks are made on user-supplied input to calls made to the svcctl function. This may allow an attacker to execute code of their choosing with system level privileges on an affected host.

Rules to detect attacks targeting this vulnerability are included in this release and are identified as SIDs 10217 through 10386.

McAfee ePolicy Orchestrator CVE-2007-1498:
McAfee ePolicy Orchestrator fails to correctly process user-supplied input. It may be possible for a remote attacker to cause a buffer overflow condition to occur and execute code on the host system.

Rules to detect attacks targeting this vulnerability are included in this release and are identified as SIDs 10387 through 10389.

Symantec SupportSoft CVE-2006-6490:
Symantec SupportSoft ActiveX controls used in various products fail to correctly process user-supplied input. It may be possible for a remote attacker to cause a buffer overflow condition to occur and execute code on the host system.

Rules to detect attacks targeting this vulnerability are included in this release and are identified as SIDs 10214 through 10216.

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 22, 2007



VRT Rules 2007-03-08

Sourcefire VRT Update

Date: 2007-03-08

Synopsis:

The Sourcefire VRT is aware of vulnerabilities affecting HP Mercury Loadrunner, Shockwave, Trend Micro Officescan and Wordpress. This release also includes more additions to the spyware-put and backdoor rule sets.

Details:

HP Mercury LoadRunner CVE-2007-0446:
The HP Mercury LoadRunner agent suffers from a programming error that may allow a remote attacker to cause a stack-based buffer overflow condition to occur. This may lead to code execution of the attacker's choosing.

A rule to detect attacks targeting this vulnerability is included in this release and is identified as SID 10187.

Trend Micro OfficeScan CVE-2007-0325:
The Trend Micro OfficeScan Web-Deployment ActiveX control contains a programming error that may allow remote attackers to execute code on an affected host via a specially crafted web page.

Rules to detect attacks targeting this vulnerability are included in this release and are identified as SIDs 10173 through 10175.

WordPress CVE-2007-1277:
The WordPress 2.1.1 source code was compromised by an attacker who then introduced a backdoor into the application. This may allow other attackers to execute commands or code of their choosing on an affected server.

Rules to detect attacks targeting this vulnerability are included in this release and are identified as SIDs 10196 and 10197.

Macromedia Shockwave Flash ActiveX control: Macromedia Shockwave Flash contains a programming error that may allow a remote attacker to execute code of their choosing on an affected host using the ActiveX control.

Rules to detect attacks targeting this vulnerability are included in this release and are identified as SIDs 10214 through 10216.

Also, the Sourcefire VRT has added multiple new rules to the backdoor and spyware-put categories 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 08, 2007



VRT Rules 2007-02-21

Sourcefire VRT Update

Date: 2007-02-21

Synopsis:

This SEU contains a modification to a shared object rule to account for possible false positives.

Details:

This SEU contains a modified shared object rule to take into account false positives that may be experienced under certain network conditions.

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 21, 2007



VRT Rules 2007-02-20

Sourcefire VRT Update

Date: 2007-02-20

Synopsis:

A remotely exploitable vulnerability exists in the DCE/RPC dynamic preprocessor included with Snort versions 2.6.1, 2.6.1.1, 2.6.1.2 and 2.7 Beta 1. For more details on the vulnerability refer to the advisory released on 2007-02-19.

Details:

The DCE/RPC preprocessor was vulnerable to a stack-based buffer overflow that could potentially allow a remote attacker to execute code in the context of the user running Snort.

Rules to detect attacks targeting this vulnerability are included in this release and are identified as SIDs 10158 through 10160.

Additionally a shared object rule to detect attacks targeting this vulnerability is included in this release and is identified as GID 3 SID 10161.

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, 2007



VRT Rules 2007-02-17

Sourcefire VRT Update

Date: 2007-02-17

Synopsis:

This Snort Engine Update (SEU) addresses a vulnerability in the DCERPC preprocessor.

Details:

A critical vulnerability exists in Sourcefire Intrusion Sensors. The DCERPC preprocessor is vulnerable to a stack-based buffer overflow that could potentially allow an attacker to remotely execute code.

This SEU contains an updated Detection Engine that resolve this issue.

Mitigation Factors:

Customer who cannot immediately install the SEU can mitigate this vulnerability by disabling the DCERPC preprocessor.

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 17, 2007



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