ICS-CERT: Key Management Errors in RuggedCom’s ROS

Thursday, August 23, 2012

Infosec Island Admin


ICS-CERT is aware of a public report of hard-coded RSA SSL private key within RuggedCom’s Rugged Operating System (ROS).

The vulnerability with proof-of-concept (PoC) exploit code was publicly presented by security researcher Justin W. Clarke of Cylance Inc. According to this report, the vulnerability can be used to decrypt SSL traffic between an end user and a RuggedCom network device.

ICS-CERT notified the affected vendor of the report and asked the vendor to confirm the vulnerability and identify mitigations. ICS-CERT is issuing this alert to provide early notice of the report and identify baseline mitigations for reducing risks to these and other cybersecurity attacks.

The report included vulnerability details and PoC exploit code for the following vulnerability:

Vulnerability Type:  Key Management Errors
Remotely Exploitable:  Yes
Impact:  Loss of System Integrity

Please report any issues affecting control systems in critical infrastructure environments to ICS-CERT.

Justin W. Clarke publicly reported that the RSA Private PKI key for SSL communication between a client/user and a RuggedCom switch can be identified in the ROS. An attacker may use the key to create malicious communication to a RuggedCom network device.


ICS-CERT is currently coordinating with the vendor and security researcher to identify mitigations.

The full ICS-CERT advisory can be found here:

Source:  http://www.us-cert.gov/control_systems/pdf/ICS-ALERT-12-234-01.pdf

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