QID 591253

Date Published: 2023-01-06

QID 591253: Siemens SIMATIC Controllers and TIM Incorrect Authorization Vulnerability (ICSA-21-257-23, SSA-865327)

AFFECTED PRODUCTS
SIMATIC Drive Controller family: All versions prior to V2.9.2
SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl. SIPLUS variants): All versions prior to V21.9
SIMATIC S7-1200 CPU family (incl. SIPLUS variants): Version V4.4
SIMATIC S7-1500 CPU family (incl. related ET200 CPUs and SIPLUS variants): All versions higher than V2.5 and prior to V2.9.2
TIM 1531 IRC (incl. SIPLUS NET variants): Version V2.1

QID Detection Logic:
This QID checks for the Vulnerable version of Siemens SIMATIC Controllers and TIM using passive scanning

Successful exploitation of this vulnerability allows an unauthenticated attacker to read PLC variables from affected devices without proper authentication under certain circumstances.

  • CVSS V3 rated as Medium - 5.3 severity.
  • CVSS V2 rated as Medium - 5 severity.
    • Solution

    Customers are advised to refer to CERT MITIGATIONS section ICSA-21-257-23 or Siemens MITIGATIONS section SSA-865327 for affected packages and patching details.

    Vendor References

    CVEs related to QID 591253

    CVE-2020-28397 |
    Software Advisories
    Advisory ID Software Component Link
    icsa-21-257-23 URL Logo www.cisa.gov/uscert/ics/advisories/icsa-21-257-23
    ssa-865327 URL Logo cert-portal.siemens.com/productcert/pdf/ssa-865327.pdf
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