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Rewterz Threat Advisory – CVE-2019-6568 – Siemens SINAMICS Denial of Service Vulnerability

August 16, 2019
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Rewterz Threat Advisory – Multiple HTTP/2 Implementations Vulnerabilities

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Rewterz Threat Advisory – CVE-2019-10942 – Siemens SCALANCE X Switches Denial of Service Vulnerability

Severity

High

Analysis Summary

An attacker may send large message packages repeatedly to the telnet service, which may allow a denial-of-service condition.

Impact

Denial of Service

Affected Vendors

Siemens

Affected Products

  • SCALANCE X-200: All versions
  • SCALANCE X-200IRT: All versions
  • SCALANCE X-200RNA: All versions

Remediation

Siemens has identified the following specific workarounds and mitigation users can apply to reduce the risk:

  • Disable telnet service on affected devices. Users should use SSH instead.
  • Restrict network access to Port 23/TCP of the device.

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