ICS-CERT: Wago IPC Multiple Vulnerabilities

Monday, April 09, 2012

Infosec Island Admin

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ICS-CERT is aware of a public report of multiple vulnerabilities affecting the WAGO IPC 758-870, which is an embedded Linux programmable logic controller (PLC).

According to this report, an attacker could exploit these vulnerabilities to gain unauthorized access or to make unauthenticated configuration changes, which may include arbitrary code.

The “Improper Access Control” vulnerability is the same vulnerability identified in ICS-ALERT-12-097-02—3S Software CoDeSys Improper Access Control.a 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 vulnerabilities:

Vulnerability Type: Use of Hard-coded Password
Exploitability: Remote
Impact: Loss of integrity

Vulnerability Type: Improper Access Control
Exploitability: Remote
Impact: Loss of integrity, possible arbitrary code execution

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 mitigations.

The full ICS-CERT advisory can be found here:

Source:  http://www.us-cert.gov/control_systems/pdf/ICS-ALERT-12-097-01.pdf

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