VRT Advisories


May 2009 Archive

VRT Rules 2009-05-29

Sourcefire VRT Rules Update

Date: 2009-05-29

Synopsis:

The Sourcefire VRT is aware of a vulnerability affecting Microsoft DirectShow.

Details:

Microsoft DirectShow Buffer Overflow (CVE-2009-1537):
Microsoft DirectShow contains a programming error that may allow a remote attacker to execute code on an affected system. The problem occurs when DirectShow parses a specially crafted QuickTime file.

A rule to detect attacks targeting this vulnerability is included in this release and is identified with GID 3, SID 15517. This rule requires GID 1, SID 15516 to be enabled.

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 May 29, 2009



VRT Rules 2009-05-26

Sourcefire VRT Rules Update

Date: 2009-05-26

Synopsis:

The Sourcefire VRT is aware of vulnerabilities affecting the NTP daemon and Oracle Database systems.

Details:

NTP Daemon Buffer Overflow (CVE-2009-1252):
The NTP daemon is vulnerable to a stack overflow when OpenSSL and autokey are enabled. A remote attacker may execute code on an affected system via an extension field in an NTP packet.

A rule to detect attacks targeting this vulnerability is included in this release and is identified with GID 1, SID 15514.

Oracle Database SQL Injection (CVE-2009-0978):
The Workspace Manager component in Oracle Database contains a programming error that may allow a remote attacker to execute an SQL injection attack.

A rule to detect attacks targeting this vulnerability is included in this release and is identified with GID 1, SID 15515.

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 May 26, 2009



VRT Rules 2009-05-18

Sourcefire VRT Rules Update

Date: 2009-05-18

Synopsis:

This release contains two new rules and multiple rule modifications.

Details:

Two new rules have been added to address a vulnerability in Samba. These rules are identified with GID 1, SIDs 15507 and 15508.

Additionally, multiple rules have been updated to take advantage of the new 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 May 18, 2009



VRT Rules 2009-05-12

Sourcefire VRT Rules Update

Date: 2009-05-12

Synopsis:

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

Details:

Microsoft Security Advisory MS09-017:
Microsoft PowerPoint contains several programming errors that may allow a remote attacker to execute code on a vulnerable system via a specially crafted PowerPoint file.

Rules to detect attacks targeting these vulnerabilities are included in this release and are identified with GID 3, SIDs 15498 through 15506.

Additionally, a previously released rule identified with GID 3, SID 15454 will also detect attacks targeting these vulnerabilities.

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 May 12, 2009



VRT Rules 2009-05-05

Sourcefire VRT Rules Update

Date: 2009-05-05

Synopsis:

The Sourcefire VRT is aware of multiple vulnerabilities affecting Adobe Reader.

Details:

Adobe Reader Code Execution (CVE-2009-1492):
The JavaScript API in Adobe Reader may allow a remote attacker to execute code on an affected system. The problem occurs when specially crafted JavaScript uses the getAnnots method in a PDF document.

A rule to detect attacks targeting this vulnerability is included in this release and is identified with GID 1, SID 15493.

Adobe Reader Buffer Overflow (CVE-2009-1493):
The JavaScript API in Adobe Reader may allow a remote attacker to execute code on an affected system. The problem occurs when specially crafted JavaScript uses the customDictionaryOpen method in a PDF document.

A rule to detect attacks targeting this vulnerability is included in this release and is identified with GID 1, SID 15492.

Additionally as a result of ongoing research, the Sourcefire VRT has added multiple rules to the exploit, specific-threats, backdoor, multimedia 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 May 05, 2009