VRT Advisories


January 2008 Archive

VRT Rules 2008-01-29

Sourcefire VRT Rules Update

Date: 2008-01-29

Synopsis:

The Sourcefire VRT is aware of vulnerabilities affecting the Cisco Unified Communications Manager and SAP MaxDB.

Details:

Cisco Unified Communications Manager Buffer Overflow (CVE-2008-0027):
A buffer overflow condition in the Certificate Trust List Provider service used by the Cisco Unified Communications Manager 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 as SID 13363.

SAP MaxDB Command Injection (CVE-2008-0244):
SAP MaxDB fails to correctly sanitize user-supplied input before passing the data to certain commands. A remote attacker may be able to inject commands to be executed on an affected system via the use of shell meta-characters.

A rule to detect attacks targeting this vulnerability is included in this release and is identified as SID 13356.

Other rules have been added to address the vulnerabilities described in CVE entries CVE-2007-5511, CVE-2007-4731, CVE-2007-6435 and CVE-2007-6335. Multiple rules have also been added to the spyware-put and web-client categories to provide further coverage for additional ActiveX vulnerabilities and spyware programs.

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 Jan 29, 2008



VRT Rules 2008-01-23

Sourcefire VRT Rules Update

Date: 2008-01-23

Synopsis:

The Sourcefire VRT is aware of vulnerabilities affecting Microsoft Windows Media Player and Adobe Flash Player. This release also contains rules to address CVE entries CVE-2008-0236, CVE-2008-0237, CVE-2007-3847 and CVE-2008-0248.

Details:

Microsoft Windows Media Player Buffer Overflow (CVE-2007-6401):
A buffer overflow condition in Microsoft Windows Media Player may be used by an attacker to execute code of their choosing on an affected system via a malicious .mp4 file.

Rules to detect attacks targeting this vulnerability are included in this release and are identified as SIDs 13316 through 13320.

Adobe Flash Player Input Validation Error (CVE-2007-6242):
Adobe Flash Player does not correctly validate user input when processing flash animation files. A remote attacker may use these vulnerabilities to execute code on an affected system.

Rules to detect attacks targeting this vulnerability are included in this release and are identified as SIDs 13300 and 13301.

Multiple other rule additions have been made to address vulnerabilities described in CVE entries CVE-2008-0236, CVE-2008-0237, CVE-2007-3847 and CVE-2008-0248.

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 Jan 23, 2008



VRT Tool 2008-01-16

Sourcefire VRT Tool Tool Update

Date: 2008-01-16

Synopsis:

The OfficeCat tool has been updated to include detection for a vulnerability in Microsoft Excel.

Details:

The OfficeCat tool has been updated to include detection for a vulnerability in Microsoft Excel. This vulnerability is identified with the CVE reference 2008-0081.

Please send feature requests and bug reports via email to vrt@sourcefire.com. Post cards and beer can be sent to the Sourcefire VRT, 9780 Patuxent Woods Drive, Columbia, MD 21045, USA.

Additionally, malware samples would be most appreciated, please contact vrt@sourcefire.com if you have some to share.

The OfficeCat tool is able to process Word, Excel and PowerPoint files and will return the appropriate reference information should possible exploit conditions be present in the document.

OfficeCat Tool Download:

Download zip archive here.

Usage Instructions:

  1. Unzip the archive
  2. Open a command shell
  3. Execute the tool executable with a document name for checking

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.

About Sourcefire

Sourcefire, Inc., the world leader in intrusion prevention, is transforming the way organizations manage and minimize network security risks with its 3D Approach - Discover, Determine, Defend - to securing real networks in real-time. For more information about Sourcefire, please visit www.sourcefire.com.

Posted by on Jan 16, 2008



VRT Rules 2008-01-10

Sourcefire VRT Rules Update

Date: 2008-01-10

Synopsis:

The Sourcefire VRT is aware of vulnerabilities affecting Samba, Skype and Apple QuickTime.

Details:

Samba Buffer Overflow (CVE-2007-6015):
A stack based buffer overflow condition is present in nmbd in certain versions of Samba. A remote attacker may be able to execute code on an affected system via a GETDC mailslot request.

A rule to detect attacks targeting this vulnerability is included in this release and is identified as SID 13291.

Skype Technologies Heap Corruption (CVE-2007-5989):
A programming error in the Skype URI handler may allow a remote attacker to cause memory corruption which may lead to code execution.

A rule to detect attacks targeting this vulnerability is included in this release and is identified as SID 13292.

Apple QuickTime Buffer Overflow (CVE-2007-4675):
Apple QuickTime does not perform adequate checks on user supplied data in QuickTime Virtual Reality movie files. A remote attacker may use this flaw to cause a buffer overflow and execute code on an affected system.

A rule to detect attacks targeting this vulnerability is included in this release and is identified as SID 13293.

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 Jan 10, 2008



VRT Rules 2008-01-08

Sourcefire VRT Rules Update

Date: 2008-01-08

Synopsis:

The Sourcefire VRT is aware of vulnerabilities affecting hosts using the Microsoft Windows operating system.

Details:

Microsoft Security Bulletin (MS08-001):
The Microsoft Windows operating system contains a programming error that may allow a remote attacker to execute code on an affected system. It should be noted however, that the likelihood of this issue being actively exploited is minimal.

Shared object rules to detect attacks targeting this vulnerability are included in this release and are identified with GID 3 and SIDs 13287 and 13288.

Rule Pack Summary:

For a complete list of new and modified rules, click here.

IMPORTANT INFORMATION:

The structure of the "so_rules" directory inside the rule packages has changed. The following is a break out of the new directory structure:

so_rules/
	src/
	precompiled/
		   <distro>/
		           <platform>/
				     <snort-version>

Where:
<distro> is one of the following values:
	a. CentOS-4.6
	b. CentOS-5.1
	c. FC-5
	d. OSX-10.4
	e. ubuntu-6.01.1

<platform> is one of the following values:
	a. i386

<snort-version> is one of the following values
	a. 2.6.1.5
	b. 2.7.0
	c. 2.8.0.1

There have been no changes to the src/ directory layout from previous packages.

The reason for this change is two fold. First, due to contract terms with some 3rd party research organizations, a small number of VRT certified rules will now only be delivered as binaries. This change applies only to SO rules. Non-SO rules will not be affected. Additionally, because of this change and to better serve the Snort community the VRT will pre-compile the "SO" rules so they are easier to use on the various platforms utilized by the snort community and the VRT subscribers.

If your platform / distribution is not currently listed above this does not mean these shared objects won’t work on your platform. Numerous Linux distributions share common libc versions and it is possible that one of the above distributions and platforms will work on your system. If none of the above combinations work on your platform, please send a note to the snort-sigs mailing list so we can determine the need for additional platforms and distributions to be added to the list of supported platforms.

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 Jan 08, 2008