Rapid7 Advisory R7-0028: Caucho Resin World Readable DOS Device
May 14, 2007 - The Caucho Resin web application server does not properly sanitize get requests on windows servers. By specifying a DOS device file name appended with an arbitrary extension, an attacker could read a continuous stream of data from any COM or LPT device on the system.
Rapid7 have updated Nexpose to check for this vulnerability. Licensed customers will receive the new vulnerability checks automatically. Visit www.rapid7.com to register for a free demo of Nexpose.
- Caucho Resin Professional v3.1.0 for Windows
- Caucho Resin v3.1.0 for Windows
- Caucho Resin v3.0.21 for Windows
- Caucho Resin v3.0.20 for Windows
- Caucho Resin v3.0.19 for Windows
- Caucho Resin v3.0.18 for Windows
- Caucho Resin v3.0.17 for Windows
- Caucho Resin v3.1.1 for Windows
- Caucho Resin Professional v3.1.1 for Windows
Caucho Technology, Inc.
Caucho was notified of this vulnerability on May 3rd, 2007.They fixed this vulnerability in the latest unofficial snapshot of Resin 3.1.1, available from Caucho's Web site.
Upgrade to Caucho Resin 3.1.1 or later.
Caucho Resin is a servlet and JSP server. Resin ships with its own stand-alone web server which runs by default on port 8080. Any remote user can request URLs of the form:
(where "[device]" can be COM1, COM2, LPT1, etc.) to open an input stream to any hardware serial or LPT device on the system.
Once the initial connection is made, Resin will hold a lock on the device and subsequent requests to the same device may result in a 404/Not Found response from the server.
Discovered by Derek Abdine of Rapid7.
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