ICS-CERT: 3S-Software CoDeSys Improper Access Control

Tuesday, April 10, 2012

Infosec Island Admin

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ICS-CERT is aware of a public report of improper access control vulnerability affecting 3S-Software CoDeSys. CoDeSys is a third party product used on programmable logic controllers and engineering workstations.

According to this report, an attacker can upload unauthenticated configuration changes to the PLC which may include arbitrary code. This report was released by Reid Wightman, Digital Bond, without coordination with either the vendor or ICS-CERT.

ICS-CERT has notified the affected vendor of the report and has 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 for the following vulnerability:

Vulnerability Type:  Improper Access Control
Exploitability:  Remote
Impact:  Loss of integrity

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

MITIGATION

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

The full ICS-CERT advisory can be found here:

Source:  http://www.us-cert.gov/control_systems/pdf/ICS-ALERT-12-097-02.pdf

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