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VxWorks WDB Agent Debug Service Exposure August 2, 2010

Rapid7 Customer Protection:

Rapid7 Nexpose customers have access to a vulnerability check for this flaw as of the latest update. More information about this check can be found online at:

Vulnerability Details:

This vulnerability allows remote attackers to read memory, write memory, execute code, and ultimately take complete control of the affected device. This issue affects over 100 different vendors and a multitude of products, both shipping and end-of-life. A apreadsheet of identified products affected by this flaw can be found at the URL below. This index is not comprehensive and not all devices found are still supported.

This flaw occurs due to an insecure setting in the configuration file of the manufacturer's source code. This setting results in a system- debug service being exposed on UDP port 17185. This service does not require authentication to access. More information about this issue can be found at the Metasploit blog:

Vendor Response:

Wind River Systems has notified their customers of the issue and indicated that the WDB agent should be disabled for production builds.
CERT has notified every vendor with an identified, shipping product containing this vulnerability. Responses for each specific vendor can be found in the CERT advisory:

Disclosure Timeline:

2010-06-02 - Vulnerability reported to CERT for vendor notification
2010-08-02 - Coordinated public release of advisory


This vulnerability had been discovered in specific devices in multiple instances, first by Bennett Todd in 2002 and then Shawn Merdinger in 2005. A comprehensive analysis of all affected devices was conducted by HD Moore in 2010.

About Rapid7 Security

Rapid7 provides vulnerability management, compliance and penetration testing solutions for Web application, network and database security. In addition to developing the Nexpose Vulnerability Management system,
Rapid7 manages the Metasploit Project and is the primary sponsor of the W3AF web assessment tool.

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