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Rewterz Threat Advisory – Siemens CP1604 and CP1616 Multiple vulnerabilities

Severity: HIGH

Analysis Summary

Following vulnerabilities are found in Siemens CP1604 and CP1616:

CVE-2018-13808 – CLEARTEXT TRANSMISSION OF SENSITIVE INFORMATION An attacker with network access to Port 23/TCP could extract internal communication data or cause a denial-of-service condition.

CVE-2018-13809 – IMPROPER NEUTRALIZATION OF INPUT DURING WEB PAGE GENERATION (‘CROSS-SITE SCRIPTING’) The integrated web server of the affected CP devices could allow cross-site scripting (XSS) attacks if unsuspecting users are tricked into following a malicious link.

CVE-2018-13810 – CROSS-SITE REQUEST FORGERY The integrated configuration web server of the affected CP devices could allow a cross-site request forgery (CSRF) attack if an unsuspecting user is tricked into accessing a malicious link.

Impact

  • Denial of service
  • Exposure of sensitive information
  • Execution of arbitrary code
  • Cross site request forgery
  • Cross site scripting

Affected Products

CP 1604

CP 1616

All versions prior to v2.8

Remediation

  • Do not click on any links sent from unknown senders.
  • Disable the integrated server.
  • Restrict access to the device to the internal or VPN network. Further restrict access to the web interface (80/TCP) and to the telnet port (23/TCP) to trusted IP addresses if possible.
  • Update to version 2.8. https://www.siemens.com/industrialsecurity