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Rewterz Threat Advisory – CVE-2019-10922 – Siemens SIMATIC WinCC and SIMATIC PCS 7 Remote Code Execution Vulnerability

Severity

High

Analysis Summary

If affected installations do not have “Encrypted Communication” configured, an unauthenticated attacker with network access may be able to execute arbitrary code.

Impact

Execution of arbitrary code

Affected Vendors

Siemens

Affected Products

  • SIMATIC WinCC
  • SIMATIC PCS 7
  • SIMATIC PCS 7 v8.0 and earlier
  • SIMATIC PCS 7 v8.1 and newer (if “Encrypted Communication” is disabled)
  • SIMATIC WinCC v7.2 and earlier
  • SIMATIC WinCC v7.3 and newer (if “Encrypted Communication” is disabled)

Remediation

  • Upgrade SIMATIC WinCC to v7.3 or newer.
  • Upgrade SIMATIC PCS 7 to v8.1 or newer.
  • Enable “Encrypted Communications” (some newer versions have this enabled by default).