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Rewterz
Rewterz threat Advisory – CVE-2019-18257 – Advantech DiagAnywhere Server Remote Code Execution Vulnerability
December 13, 2019
Rewterz
Rewterz Threat Advisory – CVE-2019-18261 – ICS: Omron PLC CJ, CS and NJ Series Improper Limitation of suspicious failed logins
December 13, 2019

Rewterz Threat Advisory – ICS: Omron PLC CJ and CS Series Multiple Vulnerabilities

Severity

High

Analysis Summary

CVE-2019-18259

An attacker could spoof arbitrary messages or execute commands.

CVE-2019-13533

An attacker could monitor traffic between the PLC and the controller, and replay requests that could result in the opening and closing of industrial valves.

CVE-2019-18269

The software properly checks for the existence of a lock, but the lock can be externally controlled or influenced by an actor that is outside of the intended sphere of control.

Impact

  • Authentication Bypass by Spoofing
  • Authentication Bypass by Capture-replay
  • Unrestricted Externally Accessible Lock

Affected Vendors

Omron

Affected Products

  • Omron PLC CJ series all versions
  • Omron PLC CS series all versions

Remediation

  • Filter FINS port: Protect access to Omron’s PLC with a firewall and blocking unnecessary remote access to FINS port (default: 9600).
  • Filter IP addresses: Protect access to Omron’s PLC with a firewall and filtering devices connected to the PLC by IP address.