CISA Advisory: Siemens SIMATIC S7-1500 CPUs | CISA

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). 

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1. EXECUTIVE SUMMARY

• CVSS v4 6.9
• ATTENTION: Exploitable remotely/low attack complexity
• Vendor: Siemens
• Equipment: SIMATIC S7-1500 CPUs
• Vulnerability: Authentication Bypass Using an Alternate Path or Channel

2. RISK EVALUATION

Successful exploitation of this vulnerability could allow an unauthenticated remote attacker to gain knowledge about actual and configured maximum cycle times and communication load of the CPU.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

The following Siemens products are affected:

• SIMATIC Drive Controller CPU 1504D TF (6ES7615-4DF10-0AB0): Versions prior to V3.1.4
• SIMATIC Drive Controller CPU 1507D TF (6ES7615-7DF10-0AB0): Versions prior to V3.1.4
• SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl. SIPLUS variants): All versions
• SIMATIC S7-1500 CPU 1510SP F-1 PN (6ES7510-1SJ01-0AB0): All versions
• SIMATIC S7-1500 CPU 1510SP F-1 PN (6ES7510-1SK03-0AB0): Versions prior to V3.1.4
• SIMATIC S7-1500 CPU 1510SP-1 PN (6ES7510-1DJ01-0AB0): All versions
• SIMATIC S7-1500 CPU 1510SP-1 PN (6ES7510-1DK03-0AB0): Versions prior to V3.1.4
• SIMATIC S7-1500 CPU 1511-1 PN (6ES7511-1AK01-0AB0): All versions
• SIMATIC S7-1500 CPU 1511-1 PN (6ES7511-1AK02-0AB0): All versions
• SIMATIC S7-1500 CPU 1511-1 PN (6ES7511-1AL03-0AB0): Versions prior to V3.1.4
• SIMATIC S7-1500 CPU 1511C-1 PN (6ES7511-1CK00-0AB0): All versions
• SIMATIC S7-1500 CPU 1511C-1 PN (6ES7511-1CK01-0AB0): All versions
• SIMATIC S7-1500 CPU 1511C-1 PN (6ES7511-1CL03-0AB0): Versions prior to V3.1.4
• SIMATIC S7-1500 CPU 1511F-1 PN (6ES7511-1FK01-0AB0): All versions
• SIMATIC S7-1500 CPU 1511F-1 PN (6ES7511-1FK02-0AB0): All versions
• SIMATIC S7-1500 CPU 1511F-1 PN (6ES7511-1FL03-0AB0): Versions prior to V3.1.4
• SIMATIC S7-1500 CPU 1511T-1 PN (6ES7511-1TK01-0AB0): All versions
• SIMATIC S7-1500 CPU 1511T-1 PN (6ES7511-1TL03-0AB0): Versions prior to V3.1.4
• SIMATIC S7-1500 CPU 1511TF-1 PN (6ES7511-1UK01-0AB0): All versions
• SIMATIC S7-1500 CPU 1511TF-1 PN (6ES7511-1UL03-0AB0): Versions prior to V3.1.4
• SIMATIC S7-1500 CPU 1512C-1 PN (6ES7512-1CK00-0AB0): All versions
• SIMATIC S7-1500 CPU 1512C-1 PN (6ES7512-1CK01-0AB0): All versions
• SIMATIC S7-1500 CPU 1512C-1 PN (6ES7512-1CM03-0AB0): Versions prior to V3.1.4
• SIMATIC S7-1500 CPU 1512SP F-1 PN (6ES7512-1SK01-0AB0): All versions
• SIMATIC S7-1500 CPU 1512SP F-1 PN (6ES7512-1SM03-0AB0): Versions prior to V3.1.4
• SIMATIC S7-1500 CPU 1512SP-1 PN (6ES7512-1DK01-0AB0): All versions
• SIMATIC S7-1500 CPU 1512SP-1 PN (6ES7512-1DM03-0AB0): Versions prior to V3.1.4
• SIMATIC S7-1500 CPU 1513-1 PN (6ES7513-1AL01-0AB0): All versions
• SIMATIC S7-1500 CPU 1513-1 PN (6ES7513-1AL02-0AB0): All versions
• SIMATIC S7-1500 CPU 1513-1 PN (6ES7513-1AM03-0AB0): Versions prior to V3.1.4
• SIMATIC S7-1500 CPU 1513F-1 PN (6ES7513-1FL01-0AB0): All versions
• SIMATIC S7-1500 CPU 1513F-1 PN (6ES7513-1FL02-0AB0): All versions
• SIMATIC S7-1500 CPU 1513F-1 PN (6ES7513-1FM03-0AB0): Versions prior to V3.1.4
• SIMATIC S7-1500 CPU 1513pro F-2 PN (6ES7513-2GM03-0AB0): Versions prior to V3.1.4
• SIMATIC S7-1500 CPU 1513pro-2 PN (6ES7513-2PM03-0AB0): Versions prior to V3.1.4
• SIMATIC S7-1500 CPU 1514SP F-2 PN (6ES7514-2SN03-0AB0): Versions prior to V3.1.4
• SIMATIC S7-1500 CPU 1514SP-2 PN (6ES7514-2DN03-0AB0): Versions prior to V3.1.4
• SIMATIC S7-1500 CPU 1514SPT F-2 PN (6ES7514-2WN03-0AB0): Versions prior to V3.1.4
• SIMATIC S7-1500 CPU 1514SPT-2 PN (6ES7514-2VN03-0AB0): Versions prior to V3.1.4
• SIMATIC S7-1500 CPU 1515-2 PN (6ES7515-2AM01-0AB0): All versions
• SIMATIC S7-1500 CPU 1515-2 PN (6ES7515-2AM02-0AB0): All versions
• SIMATIC S7-1500 CPU 1515-2 PN (6ES7515-2AN03-0AB0): Versions prior to V3.1.4
• SIMATIC S7-1500 CPU 1515F-2 PN (6ES7515-2FM01-0AB0): All versions
• SIMATIC S7-1500 CPU 1515F-2 PN (6ES7515-2FM02-0AB0): All versions
• SIMATIC S7-1500 CPU 1515F-2 PN (6ES7515-2FN03-0AB0): Versions prior to V3.1.4
• SIMATIC S7-1500 CPU 1515T-2 PN (6ES7515-2TM01-0AB0): All versions
• SIMATIC S7-1500 CPU 1515T-2 PN (6ES7515-2TN03-0AB0): Versions prior to V3.1.4
• SIMATIC S7-1500 CPU 1515TF-2 PN (6ES7515-2UM01-0AB0): All versions
• SIMATIC S7-1500 CPU 1515TF-2 PN (6ES7515-2UN03-0AB0): Versions prior to V3.1.4
• SIMATIC S7-1500 CPU 1516-3 PN/DP (6ES7516-3AN01-0AB0): All versions
• SIMATIC S7-1500 CPU 1516-3 PN/DP (6ES7516-3AN02-0AB0): All versions
• SIMATIC S7-1500 CPU 1516-3 PN/DP (6ES7516-3AP03-0AB0): Versions prior to V3.1.4
• SIMATIC S7-1500 CPU 1516F-3 PN/DP (6ES7516-3FN01-0AB0): All versions
• SIMATIC S7-1500 CPU 1516F-3 PN/DP (6ES7516-3FN02-0AB0): All versions
• SIMATIC S7-1500 CPU 1516F-3 PN/DP (6ES7516-3FP03-0AB0): Versions prior to V3.1.4
• SIMATIC S7-1500 CPU 1516pro F-2 PN (6ES7516-2GP03-0AB0): Versions prior to V3.1.4
• SIMATIC S7-1500 CPU 1516pro-2 PN (6ES7516-2PP03-0AB0): Versions prior to V3.1.4
• SIMATIC S7-1500 CPU 1516T-3 PN/DP (6ES7516-3TN00-0AB0): Versions prior to V3.1.4
• SIMATIC S7-1500 CPU 1516TF-3 PN/DP (6ES7516-3UN00-0AB0): Versions prior to V3.1.4
• SIMATIC S7-1500 CPU 1517-3 PN/DP (6ES7517-3AP00-0AB0): Versions prior to V3.1.4
• SIMATIC S7-1500 CPU 1517F-3 PN/DP (6ES7517-3FP00-0AB0): Versions prior to V3.1.4
• SIMATIC S7-1500 CPU 1517F-3 PN/DP (6ES7517-3FP01-0AB0): Versions prior to V3.1.4
• SIMATIC S7-1500 CPU 1517T-3 PN/DP (6ES7517-3TP00-0AB0): Versions prior to V3.1.4
• SIMATIC S7-1500 CPU 1517TF-3 PN/DP (6ES7517-3UP00-0AB0): Versions prior to V3.1.4
• SIMATIC S7-1500 CPU 1518-4 PN/DP (6ES7518-4AP00-0AB0): Versions prior to V3.1.4
• SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0): All versions
• SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0): All versions
• SIMATIC S7-1500 CPU 1518F-4 PN/DP (6ES7518-4FP00-0AB0): Versions prior to V3.1.4
• SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0): All versions
• SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0): All versions
• SIMATIC S7-1500 CPU 1518T-4 PN/DP (6ES7518-4TP00-0AB0): Versions prior to V3.1.4
• SIMATIC S7-1500 CPU 1518TF-4 PN/DP (6ES7518-4UP00-0AB0): Versions prior to V3.1.4
• SIMATIC S7-1500 CPU S7-1518-4 PN/DP ODK (6ES7518-4AP00-3AB0): All versions
• SIMATIC S7-1500 CPU S7-1518F-4 PN/DP ODK (6ES7518-4FP00-3AB0): All versions
• SIMATIC S7-1500 ET 200pro: CPU 1513PRO F-2 PN (6ES7513-2GL00-0AB0): All versions
• SIMATIC S7-1500 ET 200pro: CPU 1513PRO-2 PN (6ES7513-2PL00-0AB0): All versions
• SIMATIC S7-1500 ET 200pro: CPU 1516PRO F-2 PN (6ES7516-2GN00-0AB0): All versions
• SIMATIC S7-1500 ET 200pro: CPU 1516PRO-2 PN (6ES7516-2PN00-0AB0): All versions
• SIMATIC S7-1500 Software Controller V2: All versions
• 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
• SIPLUS ET 200SP CPU 1510SP F-1 PN RAIL (6AG2510-1SJ01-1AB0): All versions
• SIPLUS ET 200SP CPU 1510SP-1 PN (6AG1510-1DJ01-2AB0): All versions
• SIPLUS ET 200SP CPU 1510SP-1 PN (6AG1510-1DJ01-7AB0): All versions
• SIPLUS ET 200SP CPU 1510SP-1 PN RAIL (6AG2510-1DJ01-1AB0): All versions
• SIPLUS ET 200SP CPU 1510SP-1 PN RAIL (6AG2510-1DJ01-4AB0): All versions
• SIPLUS ET 200SP CPU 1512SP F-1 PN (6AG1512-1SK01-2AB0): All versions
• SIPLUS ET 200SP CPU 1512SP F-1 PN (6AG1512-1SK01-7AB0): All versions
• SIPLUS ET 200SP CPU 1512SP F-1 PN RAIL (6AG2512-1SK01-1AB0): All versions
• SIPLUS ET 200SP CPU 1512SP F-1 PN RAIL (6AG2512-1SK01-4AB0): All versions
• SIPLUS ET 200SP CPU 1512SP-1 PN (6AG1512-1DK01-2AB0): All versions
• SIPLUS ET 200SP CPU 1512SP-1 PN (6AG1512-1DK01-7AB0): All versions
• SIPLUS ET 200SP CPU 1512SP-1 PN RAIL (6AG2512-1DK01-1AB0): All versions
• SIPLUS ET 200SP CPU 1512SP-1 PN RAIL (6AG2512-1DK01-4AB0): All versions
• SIPLUS S7-1500 CPU 1511-1 PN (6AG1511-1AK01-2AB0): All versions
• SIPLUS S7-1500 CPU 1511-1 PN (6AG1511-1AK01-7AB0): All versions
• SIPLUS S7-1500 CPU 1511-1 PN (6AG1511-1AK02-2AB0): All versions
• SIPLUS S7-1500 CPU 1511-1 PN (6AG1511-1AK02-7AB0): All versions
• SIPLUS S7-1500 CPU 1511-1 PN T1 RAIL (6AG2511-1AK01-1AB0): All versions
• SIPLUS S7-1500 CPU 1511-1 PN T1 RAIL (6AG2511-1AK02-1AB0): All versions
• SIPLUS S7-1500 CPU 1511-1 PN TX RAIL (6AG2511-1AK01-4AB0): All versions
• SIPLUS S7-1500 CPU 1511-1 PN TX RAIL (6AG2511-1AK02-4AB0): All versions
• SIPLUS S7-1500 CPU 1511F-1 PN (6AG1511-1FK01-2AB0): All versions
• SIPLUS S7-1500 CPU 1511F-1 PN (6AG1511-1FK02-2AB0): All versions
• SIPLUS S7-1500 CPU 1513-1 PN (6AG1513-1AL01-2AB0): All versions
• SIPLUS S7-1500 CPU 1513-1 PN (6AG1513-1AL01-7AB0): All versions
• SIPLUS S7-1500 CPU 1513-1 PN (6AG1513-1AL02-2AB0): All versions
• SIPLUS S7-1500 CPU 1513-1 PN (6AG1513-1AL02-7AB0): All versions
• SIPLUS S7-1500 CPU 1513F-1 PN (6AG1513-1FL01-2AB0): All versions
• SIPLUS S7-1500 CPU 1513F-1 PN (6AG1513-1FL02-2AB0): All versions
• SIPLUS S7-1500 CPU 1515F-2 PN (6AG1515-2FM01-2AB0): All versions
• SIPLUS S7-1500 CPU 1515F-2 PN (6AG1515-2FM02-2AB0): All versions
• SIPLUS S7-1500 CPU 1515F-2 PN RAIL (6AG2515-2FM02-4AB0): All versions
• SIPLUS S7-1500 CPU 1515F-2 PN T2 RAIL (6AG2515-2FM01-2AB0): All versions
• SIPLUS S7-1500 CPU 1516-3 PN/DP (6AG1516-3AN01-2AB0): All versions
• SIPLUS S7-1500 CPU 1516-3 PN/DP (6AG1516-3AN01-7AB0): All versions
• SIPLUS S7-1500 CPU 1516-3 PN/DP (6AG1516-3AN02-2AB0): All versions
• SIPLUS S7-1500 CPU 1516-3 PN/DP (6AG1516-3AN02-7AB0): All versions
• SIPLUS S7-1500 CPU 1516-3 PN/DP RAIL (6AG2516-3AN02-4AB0): All versions
• SIPLUS S7-1500 CPU 1516-3 PN/DP TX RAIL (6AG2516-3AN01-4AB0): All versions
• SIPLUS S7-1500 CPU 1516F-3 PN/DP (6AG1516-3FN01-2AB0): All versions
• SIPLUS S7-1500 CPU 1516F-3 PN/DP (6AG1516-3FN02-2AB0): All versions
• SIPLUS S7-1500 CPU 1516F-3 PN/DP RAIL (6AG2516-3FN02-2AB0): All versions
• SIPLUS S7-1500 CPU 1516F-3 PN/DP RAIL (6AG2516-3FN02-4AB0): All versions
• SIPLUS S7-1500 CPU 1518-4 PN/DP (6AG1518-4AP00-4AB0): Versions prior to V3.1.4
• SIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0): All versions
• SIPLUS S7-1500 CPU 1518F-4 PN/DP (6AG1518-4FP00-4AB0): Versions prior to V3.1.4

3.2 Vulnerability Overview

3.2.1 AUTHENTICATION BYPASS USING AN ALTERNATE PATH OR CHANNEL CWE-288

The web server of affected devices does not properly authenticate user request to the ‘/ClientArea/RuntimeInfoData.mwsl’ endpoint. This could allow an unauthenticated remote attacker to gain knowledge about current actual and configured maximum cycle times as well as about configured maximum communication load.

CVE-2024-46887 has been assigned to this vulnerability. A CVSS v3 base score of 5.3 has been assigned; the CVSS vector string is (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N).

A CVSS v4 score has also been calculated for CVE-2024-46887. A base score of 6.9 has been calculated; the CVSS vector string is (CVSS4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N).

3.3 BACKGROUND

• CRITICAL INFRASTRUCTURE SECTORS: Energy
• COUNTRIES/AREAS DEPLOYED: Worldwide
• COMPANY HEADQUARTERS LOCATION: Germany

3.4 RESEARCHER

Corstiaan Klos reported this vulnerability to Siemens.

4. MITIGATIONS

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

• SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl. SIPLUS variants), 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 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 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 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0), SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0), SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0), SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0), 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), SIMATIC S7-1500 Software Controller V2, SIMATIC S7-1500 Software Controller V3, SIMATIC S7-PLCSIM Advanced, 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 (6AG2510-1DJ01-1AB0), SIPLUS ET 200SP CPU 1510SP-1 PN RAIL (6AG2510-1DJ01-4AB0), 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 (6AG2512-1DK01-1AB0), SIPLUS ET 200SP CPU 1512SP-1 PN RAIL (6AG2512-1DK01-4AB0), SIPLUS S7-1500 CPU 1511-1 PN (6AG1511-1AK01-2AB0), SIPLUS S7-1500 CPU 1511-1 PN (6AG1511-1AK01-7AB0), SIPLUS S7-1500 CPU 1511-1 PN (6AG1511-1AK02-2AB0), 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 (6AG1513-1AL01-2AB0), SIPLUS S7-1500 CPU 1513-1 PN (6AG1513-1AL01-7AB0), 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 1516-3 PN/DP (6AG1516-3AN01-2AB0), SIPLUS S7-1500 CPU 1516-3 PN/DP (6AG1516-3AN01-7AB0), 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 (6AG1516-3FN01-2AB0), SIPLUS S7-1500 CPU 1516F-3 PN/DP (6AG1516-3FN02-2AB0), SIPLUS S7-1500 CPU 1516F-3 PN/DP RAIL (6AG2516-3FN02-2AB0), SIPLUS S7-1500 CPU 1516F-3 PN/DP RAIL (6AG2516-3FN02-4AB0), SIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0): Currently no fix is available
• 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 1511C-1 PN (6ES7511-1CL03-0AB0), 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 1512C-1 PN (6ES7512-1CM03-0AB0), 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 1513pro F-2 PN (6ES7513-2GM03-0AB0), SIMATIC S7-1500 CPU 1513pro-2 PN (6ES7513-2PM03-0AB0), 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 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 1516pro F-2 PN (6ES7516-2GP03-0AB0), SIMATIC S7-1500 CPU 1516pro-2 PN (6ES7516-2PP03-0AB0), 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 1517F-3 PN/DP (6ES7517-3FP01-0AB0), 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 1518F-4 PN/DP (6ES7518-4FP00-0AB0), 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 1518-4 PN/DP (6AG1518-4AP00-4AB0), SIPLUS S7-1500 CPU 1518F-4 PN/DP (6AG1518-4FP00-4AB0): Update to V3.1.4 or later version
• SIMATIC Drive Controller CPU 1504D TF (6ES7615-4DF10-0AB0), SIMATIC Drive Controller CPU 1507D TF (6ES7615-7DF10-0AB0): Update to V3.1.4 or later version

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 industrial security by Siemens can be found on the Siemens industrial security webpage

For more information see the associated Siemens security advisory SSA-054046 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 exploitation specifically targeting this vulnerability has been reported to CISA at this time.

5. UPDATE HISTORY

• October 10, 2024: Initial Publication