As of January 10, 2023, CISA will no longer be updating ICS security advisories for Siemens product vulnerabilities beyond the initial advisory. For the most up-to-date information on vulnerabilities in this advisory, please see Siemens’ ProductCERT Security Advisories (CERT Services | Services | Siemens Global). 

View CSAF

1. EXECUTIVE SUMMARY

CVSS v3 7.5
ATTENTION: Exploitable remotely/low attack complexity
Vendor: Siemens
Equipment: SIMATIC, SIPLUS Products
Vulnerability: Integer Overflow or Wraparound

2. RISK EVALUATION

Successful exploitation of this vulnerability could allow an unauthenticated remote attacker to create a denial-of-service condition by sending a specially crafted certificate.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

The following Siemens products are affected:

SIMATIC Cloud Connect 7 CC712 (6GK1411-1AC00): All versions prior to v2.2
SIMATIC Cloud Connect 7 CC716 (6GK1411-5AC00): All versions prior to v2.2
SIMATIC Drive Controller CPU 1504D TF (6ES7615-4DF10-0AB0): All versions prior to v2.9.7
SIMATIC Drive Controller CPU 1504D TF (6ES7615-4DF10-0AB0): All versions from v3.0.1 to v3.0.3
SIMATIC Drive Controller CPU 1507D TF (6ES7615-7DF10-0AB0): All versions prior to v2.9.7
SIMATIC Drive Controller CPU 1507D TF (6ES7615-7DF10-0AB0): All versions from v3.0.1 to v3.0.3
SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl. SIPLUS variants): All versions prior to v21.9.7
SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl. SIPLUS variants): Versions 30.0.0 and prior
SIMATIC S7-1200 CPU family (incl. SIPLUS variants): All versions
SIMATIC S7-1500 CPU 1510SP F-1 PN (6ES7510-1SJ01-0AB0): All versions prior to v2.9.7
SIMATIC S7-1500 CPU 1510SP F-1 PN (6ES7510-1SK03-0AB0): All versions prior to v3.0.3
SIMATIC S7-1500 CPU 1510SP-1 PN (6ES7510-1DJ01-0AB0): All versions prior to v2.9.7
SIMATIC S7-1500 CPU 1510SP-1 PN (6ES7510-1DK03-0AB0): All versions prior to v3.0.3
SIMATIC S7-1500 CPU 1511-1 PN (6ES7511-1AK01-0AB0): All versions prior to v2.9.7
SIMATIC S7-1500 CPU 1511-1 PN (6ES7511-1AK02-0AB0): All versions prior to v2.9.7
SIMATIC S7-1500 CPU 1511-1 PN (6ES7511-1AL03-0AB0): All versions prior to v3.0.3
SIMATIC S7-1500 CPU 1511C-1 PN (6ES7511-1CK00-0AB0): All versions prior to v2.9.7
SIMATIC S7-1500 CPU 1511C-1 PN (6ES7511-1CK01-0AB0): All versions prior to v2.9.7
SIMATIC S7-1500 CPU 1511F-1 PN (6ES7511-1FK01-0AB0): All versions prior to v2.9.7
SIMATIC S7-1500 CPU 1511F-1 PN (6ES7511-1FK02-0AB0): All versions prior to v2.9.7
SIMATIC S7-1500 CPU 1511F-1 PN (6ES7511-1FL03-0AB0): All versions prior to v3.0.3
SIMATIC S7-1500 CPU 1511T-1 PN (6ES7511-1TK01-0AB0): All versions prior to v2.9.7
SIMATIC S7-1500 CPU 1511T-1 PN (6ES7511-1TL03-0AB0): All versions prior to v3.0.3
SIMATIC S7-1500 CPU 1511TF-1 PN (6ES7511-1UK01-0AB0): All versions prior to v2.9.7
SIMATIC S7-1500 CPU 1511TF-1 PN (6ES7511-1UL03-0AB0): All versions prior to v3.0.3
SIMATIC S7-1500 CPU 1512C-1 PN (6ES7512-1CK00-0AB0): All versions prior to v2.9.7
SIMATIC S7-1500 CPU 1512C-1 PN (6ES7512-1CK01-0AB0): All versions prior to v2.9.7
SIMATIC S7-1500 CPU 1512SP F-1 PN (6ES7512-1SK01-0AB0): All versions prior to v2.9.7
SIMATIC S7-1500 CPU 1512SP F-1 PN (6ES7512-1SM03-0AB0): All versions prior to v3.0.3
SIMATIC S7-1500 CPU 1512SP-1 PN (6ES7512-1DK01-0AB0): All versions prior to v2.9.7
SIMATIC S7-1500 CPU 1512SP-1 PN (6ES7512-1DM03-0AB0): All versions prior to v3.0.3
SIMATIC S7-1500 CPU 1513-1 PN (6ES7513-1AL01-0AB0): All versions prior to v2.9.7
SIMATIC S7-1500 CPU 1513-1 PN (6ES7513-1AL02-0AB0): All versions prior to v2.9.7
SIMATIC S7-1500 CPU 1513-1 PN (6ES7513-1AM03-0AB0): All versions prior to v3.0.3
SIMATIC S7-1500 CPU 1513F-1 PN (6ES7513-1FL01-0AB0): All versions prior to v2.9.7
SIMATIC S7-1500 CPU 1513F-1 PN (6ES7513-1FL02-0AB0): All versions prior to v2.9.7
SIMATIC S7-1500 CPU 1513F-1 PN (6ES7513-1FM03-0AB0): All versions prior to v3.0.3
SIMATIC S7-1500 CPU 1513R-1 PN (6ES7513-1RL00-0AB0): All versions prior to v2.9.7
SIMATIC S7-1500 CPU 1513R-1 PN (6ES7513-1RM03-0AB0): All versions prior to v3.0.3
SIMATIC S7-1500 CPU 1514SP F-2 PN (6ES7514-2SN03-0AB0): All versions prior to v3.0.3
SIMATIC S7-1500 CPU 1514SP-2 PN (6ES7514-2DN03-0AB0): All versions prior to v3.0.3
SIMATIC S7-1500 CPU 1514SPT F-2 PN (6ES7514-2WN03-0AB0): All versions prior to v3.0.3
SIMATIC S7-1500 CPU 1514SPT-2 PN (6ES7514-2VN03-0AB0): All versions prior to v3.0.3
SIMATIC S7-1500 CPU 1515-2 PN (6ES7515-2AM01-0AB0): All versions prior to v2.9.7
SIMATIC S7-1500 CPU 1515-2 PN (6ES7515-2AM02-0AB0): All versions prior to v2.9.7
SIMATIC S7-1500 CPU 1515-2 PN (6ES7515-2AN03-0AB0): All versions prior to v3.0.3
SIMATIC S7-1500 CPU 1515F-2 PN (6ES7515-2FM01-0AB0): All versions prior to v2.9.7
SIMATIC S7-1500 CPU 1515F-2 PN (6ES7515-2FM02-0AB0): All versions prior to v2.9.7
SIMATIC S7-1500 CPU 1515F-2 PN (6ES7515-2FN03-0AB0): All versions prior to v3.0.3
SIMATIC S7-1500 CPU 1515R-2 PN (6ES7515-2RM00-0AB0): All versions prior to v2.9.7
SIMATIC S7-1500 CPU 1515R-2 PN (6ES7515-2RN03-0AB0): All versions prior to v3.0.3
SIMATIC S7-1500 CPU 1515T-2 PN (6ES7515-2TM01-0AB0): All versions prior to v2.9.7
SIMATIC S7-1500 CPU 1515T-2 PN (6ES7515-2TN03-0AB0): All versions prior to v3.0.3
SIMATIC S7-1500 CPU 1515TF-2 PN (6ES7515-2UM01-0AB0): All versions prior to v2.9.7
SIMATIC S7-1500 CPU 1515TF-2 PN (6ES7515-2UN03-0AB0): All versions prior to v3.0.3
SIMATIC S7-1500 CPU 1516-3 PN/DP (6ES7516-3AN01-0AB0): All versions prior to v2.9.7
SIMATIC S7-1500 CPU 1516-3 PN/DP (6ES7516-3AN02-0AB0): All versions prior to v2.9.7
SIMATIC S7-1500 CPU 1516-3 PN/DP (6ES7516-3AP03-0AB0): All versions prior to v3.0.3
SIMATIC S7-1500 CPU 1516F-3 PN/DP (6ES7516-3FN01-0AB0): All versions prior to v2.9.7
SIMATIC S7-1500 CPU 1516F-3 PN/DP (6ES7516-3FN02-0AB0): All versions prior to v2.9.7
SIMATIC S7-1500 CPU 1516F-3 PN/DP (6ES7516-3FP03-0AB0): All versions prior to v3.0.3
SIMATIC S7-1500 CPU 1516T-3 PN/DP (6ES7516-3TN00-0AB0): All versions prior to v3.0.3
SIMATIC S7-1500 CPU 1516TF-3 PN/DP (6ES7516-3UN00-0AB0): All versions prior to v3.0.3
SIMATIC S7-1500 CPU 1517-3 PN/DP (6ES7517-3AP00-0AB0): All versions prior to v3.0.3
SIMATIC S7-1500 CPU 1517F-3 PN/DP (6ES7517-3FP00-0AB0): All versions prior to v3.0.3
SIMATIC S7-1500 CPU 1517H-3 PN (6ES7517-3HP00-0AB0): All versions prior to v3.0.3
SIMATIC S7-1500 CPU 1517T-3 PN/DP (6ES7517-3TP00-0AB0): All versions prior to v3.0.3
SIMATIC S7-1500 CPU 1517TF-3 PN/DP (6ES7517-3UP00-0AB0): All versions prior to v3.0.3
SIMATIC S7-1500 CPU 1518-4 PN/DP (6ES7518-4AP00-0AB0): All versions prior to v3.0.3
SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0):All versions prior to v3.0.3
SIMATIC S7-1500 CPU 1518F-4 PN/DP (6ES7518-4FP00-0AB0): All versions prior to v3.0.3
SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0): All versions prior to v3.0.3
SIMATIC S7-1500 CPU 1518HF-4 PN (6ES7518-4JP00-0AB0): All versions prior to v3.0.3
SIMATIC S7-1500 CPU 1518T-4 PN/DP (6ES7518-4TP00-0AB0): All versions prior to v3.0.3
SIMATIC S7-1500 CPU 1518TF-4 PN/DP (6ES7518-4UP00-0AB0): All versions prior to v3.0.3
SIMATIC S7-1500 CPU S7-1518-4 PN/DP ODK (6ES7518-4AP00-3AB0):All versions prior to v2.9.7
SIMATIC S7-1500 CPU S7-1518F-4 PN/DP ODK (6ES7518-4FP00-3AB0): All versions prior to v2.9.7
SIMATIC S7-1500 ET 200pro: CPU 1513PRO F-2 PN (6ES7513-2GL00-0AB0): All versions prior to v2.9.7
SIMATIC S7-1500 ET 200pro: CPU 1513PRO-2 PN (6ES7513-2PL00-0AB0): All versions prior to v2.9.7
SIMATIC S7-1500 ET 200pro: CPU 1516PRO F-2 PN (6ES7516-2GN00-0AB0): All versions prior to v2.9.7
SIMATIC S7-1500 ET 200pro: CPU 1516PRO-2 PN (6ES7516-2PN00-0AB0): All versions prior to v2.9.7
SIMATIC S7-1500 Software Controller V2: All versions prior to v21.9.7
SIMATIC S7-1500 Software Controller V3: All versions
SIMATIC S7-PLCSIM Advanced: All versions
SIPLUS ET 200SP CPU 1510SP F-1 PN (6AG1510-1SJ01-2AB0): All versions prior to v2.9.7
SIPLUS ET 200SP CPU 1510SP F-1 PN RAIL (6AG2510-1SJ01-1AB0):All versions prior to v2.9.7
SIPLUS ET 200SP CPU 1510SP-1 PN (6AG1510-1DJ01-2AB0): All versions prior to v2.9.7
SIPLUS ET 200SP CPU 1510SP-1 PN (6AG1510-1DJ01-7AB0): All versions prior to v2.9.7
SIPLUS ET 200SP CPU 1510SP-1 PN RAIL (6AG2510-1DJ01-4AB0): All versions prior to v2.9.7
SIPLUS ET 200SP CPU 1510SP-1 PN RAIL (6AG2510-1DJ01-1AB0): All versions prior to v2.9.7
SIPLUS ET 200SP CPU 1512SP F-1 PN (6AG1512-1SK01-2AB0): All versions prior to v2.9.7
SIPLUS ET 200SP CPU 1512SP F-1 PN (6AG1512-1SK01-7AB0): All versions prior to v2.9.7
SIPLUS ET 200SP CPU 1512SP F-1 PN RAIL (6AG2512-1SK01-1AB0): All versions prior to v2.9.7
SIPLUS ET 200SP CPU 1512SP F-1 PN RAIL (6AG2512-1SK01-4AB0): All versions prior to v2.9.7
SIPLUS ET 200SP CPU 1512SP-1 PN (6AG1512-1DK01-2AB0): All versions prior to v2.9.7
SIPLUS ET 200SP CPU 1512SP-1 PN (6AG1512-1DK01-7AB0): All versions prior to v2.9.7
SIPLUS ET 200SP CPU 1512SP-1 PN RAIL (6AG2512-1DK01-4AB0): All versions prior to v2.9.7
SIPLUS ET 200SP CPU 1512SP-1 PN RAIL (6AG2512-1DK01-1AB0): All versions prior to v2.9.7
SIPLUS S7-1500 CPU 1511-1 PN (6AG1511-1AK01-2AB0): All versions prior to v2.9.7
SIPLUS S7-1500 CPU 1511-1 PN (6AG1511-1AK02-2AB0): All versions prior to v2.9.7
SIPLUS S7-1500 CPU 1511-1 PN (6AG1511-1AK01-7AB0): All versions prior to v2.9.7
SIPLUS S7-1500 CPU 1511-1 PN (6AG1511-1AK02-7AB0): All versions prior to v2.9.7
SIPLUS S7-1500 CPU 1511-1 PN T1 RAIL (6AG2511-1AK01-1AB0): All versions prior to v2.9.7
SIPLUS S7-1500 CPU 1511-1 PN T1 RAIL (6AG2511-1AK02-1AB0): All versions prior to v2.9.7
SIPLUS S7-1500 CPU 1511-1 PN TX RAIL (6AG2511-1AK01-4AB0): All versions prior to v2.9.7
SIPLUS S7-1500 CPU 1511-1 PN TX RAIL (6AG2511-1AK02-4AB0): All versions prior to v2.9.7
SIPLUS S7-1500 CPU 1511F-1 PN (6AG1511-1FK01-2AB0): All versions prior to v2.9.7
SIPLUS S7-1500 CPU 1511F-1 PN (6AG1511-1FK02-2AB0): All versions prior to v2.9.7
SIPLUS S7-1500 CPU 1513-1 PN (6AG1513-1AL01-7AB0): All versions prior to v2.9.7
SIPLUS S7-1500 CPU 1513-1 PN (6AG1513-1AL01-2AB0): All versions prior to v2.9.7
SIPLUS S7-1500 CPU 1513-1 PN (6AG1513-1AL02-2AB0): All versions prior to v2.9.7
SIPLUS S7-1500 CPU 1513-1 PN (6AG1513-1AL02-7AB0): All versions prior to v2.9.7
SIPLUS S7-1500 CPU 1513F-1 PN (6AG1513-1FL01-2AB0): All versions prior to v2.9.7
SIPLUS S7-1500 CPU 1513F-1 PN (6AG1513-1FL02-2AB0): All versions prior to v2.9.7
SIPLUS S7-1500 CPU 1515F-2 PN (6AG1515-2FM01-2AB0): All versions prior to v2.9.7
SIPLUS S7-1500 CPU 1515F-2 PN (6AG1515-2FM02-2AB0): All versions prior to v2.9.7
SIPLUS S7-1500 CPU 1515F-2 PN RAIL (6AG2515-2FM02-4AB0): All versions prior to v2.9.7
SIPLUS S7-1500 CPU 1515F-2 PN T2 RAIL (6AG2515-2FM01-2AB0): All versions prior to v2.9.7
SIPLUS S7-1500 CPU 1515R-2 PN (6AG1515-2RM00-7AB0): All versions prior to v2.9.7
SIPLUS S7-1500 CPU 1515R-2 PN TX RAIL (6AG2515-2RM00-4AB0): All versions prior to v2.9.7
SIPLUS S7-1500 CPU 1516-3 PN/DP (6AG1516-3AN01-7AB0): All versions prior to v2.9.7
SIPLUS S7-1500 CPU 1516-3 PN/DP (6AG1516-3AN01-2AB0): All versions prior to v2.9.7
SIPLUS S7-1500 CPU 1516-3 PN/DP (6AG1516-3AN02-2AB0): All versions prior to v2.9.7
SIPLUS S7-1500 CPU 1516-3 PN/DP (6AG1516-3AN02-7AB0): All versions prior to v2.9.7
SIPLUS S7-1500 CPU 1516-3 PN/DP RAIL (6AG2516-3AN02-4AB0): All versions prior to v2.9.7
SIPLUS S7-1500 CPU 1516-3 PN/DP TX RAIL (6AG2516-3AN01-4AB0): All versions prior to v2.9.7
SIPLUS S7-1500 CPU 1516F-3 PN/DP (6AG1516-3FN02-2AB0): All versions prior to v2.9.7
SIPLUS S7-1500 CPU 1516F-3 PN/DP (6AG1516-3FN01-2AB0): All versions prior to v2.9.7
SIPLUS S7-1500 CPU 1516F-3 PN/DP RAIL (6AG2516-3FN02-2AB0): All versions prior to v2.9.7
SIPLUS S7-1500 CPU 1516F-3 PN/DP RAIL (6AG2516-3FN02-4AB0): All versions prior to v2.9.7
SIPLUS S7-1500 CPU 1517H-3 PN (6AG1517-3HP00-4AB0): All versions prior to v3.0.3
SIPLUS S7-1500 CPU 1518-4 PN/DP (6AG1518-4AP00-4AB0): All versions prior to v3.0.3
SIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0): All versions prior to v3.0.3
SIPLUS S7-1500 CPU 1518F-4 PN/DP (6AG1518-4FP00-4AB0): All versions prior to v3.0.3
SIPLUS S7-1500 CPU 1518HF-4 PN (6AG1518-4JP00-4AB0): All versions prior to v3.0.3

3.2 Vulnerability Overview

3.2.1 INTEGER OVERFLOW OR WRAPAROUND CWE-190

The ANSI C OPC UA SDK contains an integer overflow vulnerability that could cause the application to run into an infinite loop during certificate validation. This could allow an unauthenticated remote attacker to create a denial of service condition by sending a specially crafted certificate.

CVE-2023-28831 has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).

3.3 BACKGROUND

CRITICAL INFRASTRUCTURE SECTORS: Multiple Sectors
COUNTRIES/AREAS DEPLOYED: Worldwide
COMPANY HEADQUARTERS LOCATION: Germany

3.4 RESEARCHER

Siemens reported this vulnerability to CISA.

4. MITIGATIONS

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

Currently no fix available for the following products:

SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl. SIPLUS variants)
SIMATIC S7-1200 CPU family (incl. SIPLUS variants)
SIMATIC S7-1500 Software Controller V3
SIMATIC S7-PLCSIM Advanced

Apply Update v2.2 or a later version to the following products:

SIMATIC Cloud Connect 7 CC712 (6GK1411-1AC00)
SIMATIC Cloud Connect 7 CC716 (6GK1411-5AC00)
SIMATIC Drive Controller CPU 1504D TF (6ES7615-4DF10-0AB0)

Apply Update v2.9.7 or a later version to the following products:

SIPLUS S7-1500 CPU 1516F-3 PN/DP RAIL (6AG2516-3FN02-4AB0)
SIMATIC Drive Controller CPU 1507D TF (6ES7615-7DF10-0AB0)
SIMATIC S7-1500 CPU 1510SP F-1 PN (6ES7510-1SJ01-0AB0)
SIMATIC S7-1500 CPU 1510SP-1 PN (6ES7510-1DJ01-0AB0)
SIMATIC S7-1500 CPU 1511-1 PN (6ES7511-1AK01-0AB0)
SIMATIC S7-1500 CPU 1511-1 PN (6ES7511-1AK02-0AB0)
SIMATIC S7-1500 CPU 1511C-1 PN (6ES7511-1CK00-0AB0)
SIMATIC S7-1500 CPU 1511C-1 PN (6ES7511-1CK01-0AB0)
SIMATIC S7-1500 CPU 1511F-1 PN (6ES7511-1FK01-0AB0)
SIMATIC S7-1500 CPU 1511F-1 PN (6ES7511-1FK02-0AB0)
SIMATIC S7-1500 CPU 1511T-1 PN (6ES7511-1TK01-0AB0)
SIMATIC S7-1500 CPU 1511TF-1 PN (6ES7511-1UK01-0AB0)
SIMATIC S7-1500 CPU 1512C-1 PN (6ES7512-1CK00-0AB0)
SIMATIC S7-1500 CPU 1512C-1 PN (6ES7512-1CK01-0AB0)
SIMATIC S7-1500 CPU 1512SP F-1 PN (6ES7512-1SK01-0AB0)
SIMATIC S7-1500 CPU 1512SP-1 PN (6ES7512-1DK01-0AB0)
SIMATIC S7-1500 CPU 1513-1 PN (6ES7513-1AL01-0AB0)
SIMATIC S7-1500 CPU 1513-1 PN (6ES7513-1AL02-0AB0)
SIMATIC S7-1500 CPU 1513F-1 PN (6ES7513-1FL01-0AB0)
SIMATIC S7-1500 CPU 1513F-1 PN (6ES7513-1FL02-0AB0)
SIMATIC S7-1500 CPU 1513R-1 PN (6ES7513-1RL00-0AB0)
SIMATIC S7-1500 CPU 1515-2 PN (6ES7515-2AM01-0AB0)
SIMATIC S7-1500 CPU 1515-2 PN (6ES7515-2AM02-0AB0)
SIMATIC S7-1500 CPU 1515F-2 PN (6ES7515-2FM01-0AB0)
SIMATIC S7-1500 CPU 1515F-2 PN (6ES7515-2FM02-0AB0)
SIMATIC S7-1500 CPU 1515R-2 PN (6ES7515-2RM00-0AB0)
SIMATIC S7-1500 CPU 1515T-2 PN (6ES7515-2TM01-0AB0)
SIMATIC S7-1500 CPU 1515TF-2 PN (6ES7515-2UM01-0AB0)
SIMATIC S7-1500 CPU 1516-3 PN/DP (6ES7516-3AN01-0AB0)
SIMATIC S7-1500 CPU 1516-3 PN/DP (6ES7516-3AN02-0AB0)
SIMATIC S7-1500 CPU 1516F-3 PN/DP (6ES7516-3FN01-0AB0)
SIMATIC S7-1500 CPU 1516F-3 PN/DP (6ES7516-3FN02-0AB0)
SIMATIC S7-1500 CPU S7-1518-4 PN/DP ODK (6ES7518-4AP00-3AB0)
SIMATIC S7-1500 CPU S7-1518F-4 PN/DP ODK (6ES7518-4FP00-3AB0)
SIMATIC S7-1500 ET 200pro: CPU 1513PRO F-2 PN (6ES7513-2GL00-0AB0)
SIMATIC S7-1500 ET 200pro: CPU 1513PRO-2 PN (6ES7513-2PL00-0AB0)
SIMATIC S7-1500 ET 200pro: CPU 1516PRO F-2 PN (6ES7516-2GN00-0AB0)
SIMATIC S7-1500 ET 200pro: CPU 1516PRO-2 PN (6ES7516-2PN00-0AB0)
SIPLUS ET 200SP CPU 1510SP F-1 PN (6AG1510-1SJ01-2AB0)
SIPLUS ET 200SP CPU 1510SP F-1 PN RAIL (6AG2510-1SJ01-1AB0)
SIPLUS ET 200SP CPU 1510SP-1 PN (6AG1510-1DJ01-2AB0)
SIPLUS ET 200SP CPU 1510SP-1 PN (6AG1510-1DJ01-7AB0)
SIPLUS ET 200SP CPU 1510SP-1 PN RAIL (6AG2510-1DJ01-4AB0)
SIPLUS ET 200SP CPU 1510SP-1 PN RAIL (6AG2510-1DJ01-1AB0)
SIPLUS ET 200SP CPU 1512SP F-1 PN (6AG1512-1SK01-2AB0)
SIPLUS ET 200SP CPU 1512SP F-1 PN (6AG1512-1SK01-7AB0)
SIPLUS ET 200SP CPU 1512SP F-1 PN RAIL (6AG2512-1SK01-1AB0)
SIPLUS ET 200SP CPU 1512SP F-1 PN RAIL (6AG2512-1SK01-4AB0)
SIPLUS ET 200SP CPU 1512SP-1 PN (6AG1512-1DK01-2AB0)
SIPLUS ET 200SP CPU 1512SP-1 PN (6AG1512-1DK01-7AB0)
SIPLUS ET 200SP CPU 1512SP-1 PN RAIL (6AG2512-1DK01-4AB0)
SIPLUS ET 200SP CPU 1512SP-1 PN RAIL (6AG2512-1DK01-1AB0)
SIPLUS S7-1500 CPU 1511-1 PN (6AG1511-1AK01-2AB0)
SIPLUS S7-1500 CPU 1511-1 PN (6AG1511-1AK02-2AB0)
SIPLUS S7-1500 CPU 1511-1 PN (6AG1511-1AK01-7AB0)
SIPLUS S7-1500 CPU 1511-1 PN (6AG1511-1AK02-7AB0)
SIPLUS S7-1500 CPU 1511-1 PN T1 RAIL (6AG2511-1AK01-1AB0)
SIPLUS S7-1500 CPU 1511-1 PN T1 RAIL (6AG2511-1AK02-1AB0)
SIPLUS S7-1500 CPU 1511-1 PN TX RAIL (6AG2511-1AK01-4AB0)
SIPLUS S7-1500 CPU 1511-1 PN TX RAIL (6AG2511-1AK02-4AB0)
SIPLUS S7-1500 CPU 1511F-1 PN (6AG1511-1FK01-2AB0)
SIPLUS S7-1500 CPU 1511F-1 PN (6AG1511-1FK02-2AB0)
SIPLUS S7-1500 CPU 1513-1 PN (6AG1513-1AL01-7AB0)
SIPLUS S7-1500 CPU 1513-1 PN (6AG1513-1AL01-2AB0)
SIPLUS S7-1500 CPU 1513-1 PN (6AG1513-1AL02-2AB0)
SIPLUS S7-1500 CPU 1513-1 PN (6AG1513-1AL02-7AB0)
SIPLUS S7-1500 CPU 1513F-1 PN (6AG1513-1FL01-2AB0)
SIPLUS S7-1500 CPU 1513F-1 PN (6AG1513-1FL02-2AB0)
SIPLUS S7-1500 CPU 1515F-2 PN (6AG1515-2FM01-2AB0)
SIPLUS S7-1500 CPU 1515F-2 PN (6AG1515-2FM02-2AB0)
SIPLUS S7-1500 CPU 1515F-2 PN RAIL (6AG2515-2FM02-4AB0)
SIPLUS S7-1500 CPU 1515F-2 PN T2 RAIL (6AG2515-2FM01-2AB0)
SIPLUS S7-1500 CPU 1515R-2 PN (6AG1515-2RM00-7AB0)
SIPLUS S7-1500 CPU 1515R-2 PN TX RAIL (6AG2515-2RM00-4AB0)
SIPLUS S7-1500 CPU 1516-3 PN/DP (6AG1516-3AN01-7AB0)
SIPLUS S7-1500 CPU 1516-3 PN/DP (6AG1516-3AN01-2AB0)
SIPLUS S7-1500 CPU 1516-3 PN/DP (6AG1516-3AN02-2AB0)
SIPLUS S7-1500 CPU 1516-3 PN/DP (6AG1516-3AN02-7AB0)
SIPLUS S7-1500 CPU 1516-3 PN/DP RAIL (6AG2516-3AN02-4AB0)
SIPLUS S7-1500 CPU 1516-3 PN/DP TX RAIL (6AG2516-3AN01-4AB0)
SIPLUS S7-1500 CPU 1516F-3 PN/DP (6AG1516-3FN02-2AB0)
SIPLUS S7-1500 CPU 1516F-3 PN/DP (6AG1516-3FN01-2AB0)
SIPLUS S7-1500 CPU 1516F-3 PN/DP RAIL (6AG2516-3FN02-2AB0)

Apply Update V21.9.7 or a later version to the following products:

SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl. SIPLUS variants)
SIMATIC S7-1500 Software Controller V2

Apply Update v3.0.3 or a later version to the following products:

SIMATIC Drive Controller CPU 1504D TF (6ES7615-4DF10-0AB0)
SIMATIC Drive Controller CPU 1507D TF (6ES7615-7DF10-0AB0)
SIMATIC S7-1500 CPU 1510SP F-1 PN (6ES7510-1SK03-0AB0)
SIMATIC S7-1500 CPU 1510SP-1 PN (6ES7510-1DK03-0AB0)
SIMATIC S7-1500 CPU 1511-1 PN (6ES7511-1AL03-0AB0)
SIMATIC S7-1500 CPU 1511F-1 PN (6ES7511-1FL03-0AB0)
SIMATIC S7-1500 CPU 1511T-1 PN (6ES7511-1TL03-0AB0)
SIMATIC S7-1500 CPU 1511TF-1 PN (6ES7511-1UL03-0AB0)
SIMATIC S7-1500 CPU 1512SP F-1 PN (6ES7512-1SM03-0AB0)
SIMATIC S7-1500 CPU 1512SP-1 PN (6ES7512-1DM03-0AB0)
SIMATIC S7-1500 CPU 1513-1 PN (6ES7513-1AM03-0AB0)
SIMATIC S7-1500 CPU 1513F-1 PN (6ES7513-1FM03-0AB0)
SIMATIC S7-1500 CPU 1513R-1 PN (6ES7513-1RM03-0AB0)
SIMATIC S7-1500 CPU 1514SP F-2 PN (6ES7514-2SN03-0AB0)
SIMATIC S7-1500 CPU 1514SP-2 PN (6ES7514-2DN03-0AB0)
SIMATIC S7-1500 CPU 1514SPT F-2 PN (6ES7514-2WN03-0AB0)
SIMATIC S7-1500 CPU 1514SPT-2 PN (6ES7514-2VN03-0AB0)
SIMATIC S7-1500 CPU 1515-2 PN (6ES7515-2AN03-0AB0)
SIMATIC S7-1500 CPU 1515F-2 PN (6ES7515-2FN03-0AB0)
SIMATIC S7-1500 CPU 1515R-2 PN (6ES7515-2RN03-0AB0)
SIMATIC S7-1500 CPU 1515T-2 PN (6ES7515-2TN03-0AB0)
SIMATIC S7-1500 CPU 1515TF-2 PN (6ES7515-2UN03-0AB0)
SIMATIC S7-1500 CPU 1516-3 PN/DP (6ES7516-3AP03-0AB0)
SIMATIC S7-1500 CPU 1516F-3 PN/DP (6ES7516-3FP03-0AB0)
SIMATIC S7-1500 CPU 1516T-3 PN/DP (6ES7516-3TN00-0AB0)
SIMATIC S7-1500 CPU 1516TF-3 PN/DP (6ES7516-3UN00-0AB0)
SIMATIC S7-1500 CPU 1517-3 PN/DP (6ES7517-3AP00-0AB0)
SIMATIC S7-1500 CPU 1517F-3 PN/DP (6ES7517-3FP00-0AB0)
SIMATIC S7-1500 CPU 1517H-3 PN (6ES7517-3HP00-0AB0)
SIMATIC S7-1500 CPU 1517T-3 PN/DP (6ES7517-3TP00-0AB0)
SIMATIC S7-1500 CPU 1517TF-3 PN/DP (6ES7517-3UP00-0AB0)
SIMATIC S7-1500 CPU 1518-4 PN/DP (6ES7518-4AP00-0AB0)
SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0)
SIMATIC S7-1500 CPU 1518F-4 PN/DP (6ES7518-4FP00-0AB0)
SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0)
SIMATIC S7-1500 CPU 1518HF-4 PN (6ES7518-4JP00-0AB0)
SIMATIC S7-1500 CPU 1518T-4 PN/DP (6ES7518-4TP00-0AB0)
SIMATIC S7-1500 CPU 1518TF-4 PN/DP (6ES7518-4UP00-0AB0)
SIPLUS S7-1500 CPU 1517H-3 PN (6AG1517-3HP00-4AB0)
SIPLUS S7-1500 CPU 1518-4 PN/DP (6AG1518-4AP00-4AB0)
SIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0)
SIPLUS S7-1500 CPU 1518F-4 PN/DP (6AG1518-4FP00-4AB0)
SIPLUS S7-1500 CPU 1518HF-4 PN (6AG1518-4JP00-4AB0)

As a general security measure, Siemens recommends protecting network access to devices with appropriate mechanisms. To operate the devices in a protected IT environment, Siemens recommends configuring the environment according to Siemens’ operational guidelines for industrial security and following recommendations in the product manuals.

Additional information on Siemens industrial security can be found on the Siemens industrial security webpage

For more information, see the associated Siemens security advisory SSA-711309 in HTML and CSAF.

CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability, such as:

Minimize network exposure for all control system devices and/or systems, ensuring they are not accessible from the internet.
Locate control system networks and remote devices behind firewalls and isolating them from business networks.
When remote access is required, use more secure methods, such as Virtual Private Networks (VPNs). Recognize VPNs may have vulnerabilities, should be updated to the most recent version available, and are only as secure as the connected devices.

CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.

CISA also provides a section for control systems security recommended practices on the ICS webpage on cisa.gov. Several CISA products detailing cyber defense best practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.

CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets.

Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov in the technical information paper, ICS-TIP-12-146-01B–Targeted Cyber Intrusion Detection and Mitigation Strategies.

Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents.

No known public exploits specifically targeting this vulnerability have been reported to CISA at this time.

5. UPDATE HISTORY

September 14, 2023: Initial Publication