Publication Date: |
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Last Update: |
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Current Version: | V2.1 |
CVSS v3.1 Base Score: | 7.5 |
Affected Product and Versions | Remediation |
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All versions < V8.1 SP1 affected by CVE-2023-28831 |
Update to V8.1 SP1 or later version
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All versions < V2.2 affected by CVE-2023-28831 |
Update to V2.2 or later version
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All versions < V2.2 affected by CVE-2023-28831 |
Update to V2.2 or later version
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All versions affected by CVE-2023-28831 |
Currently no fix is available
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Open for details
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Open for details
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All versions affected by CVE-2023-28831 |
Currently no fix is planned
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Open for details
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Currently no fix is planned
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Currently no fix is planned
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Open for details
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Open for details
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All versions < V5.0 Update 2 affected by CVE-2023-28831 |
Update to V5.0 Update 2 or later version
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All versions < V8.1 SP1 affected by CVE-2023-28831 |
Update to V8.1 SP1 or later version
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Open for details
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All versions < V2.0.0.1 affected by CVE-2023-28831 |
Update to V2.0.0.1 or later version
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Open for details
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All versions < V5.0.0.0 affected by CVE-2023-28831 |
Update to V5.0.0.0 or later version
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Open for details
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Siemens has identified the following specific workarounds and mitigations that customers can apply to reduce the risk:
Product-specific remediations or mitigations can be found in the section
Affected Products and Solution.
Please follow the General Security Recommendations.
As a general security measure, Siemens strongly recommends to protect network access to devices with appropriate mechanisms. In order to operate the devices in a protected IT environment, Siemens recommends to configure the environment according to Siemens' operational guidelines for Industrial Security (Download: https://www.siemens.com/cert/operational-guidelines-industrial-security), and to follow the recommendations in the product manuals. Additional information on Industrial Security by Siemens can be found at: https://www.siemens.com/industrialsecurity
This chapter describes all vulnerabilities (CVE-IDs) addressed in this security advisory. Wherever applicable, it also documents the product-specific impact of the individual vulnerabilities.
The OPC UA implementations (ANSI C and C++) in affected products contain 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.
CVSS v3.1 Base Score | 7.5 |
CVSS v3.1 Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C |
CWE | CWE-190: Integer Overflow or Wraparound |
V1.0 (2023-09-12): | Publication Date |
V1.1 (2023-10-10): | Added additional vulnerable products SIMATIC WinCC OA V3.17, SIMATIC WinCC OA V3.18, and SIMATIC WinCC OA V3.19; clarified that both ANSI C and C++ implementations are affected |
V1.2 (2023-11-14): | Added additional vulnerable products SIMATIC BRAUMAT / SISTAR |
V1.3 (2023-12-12): | Added SIMATIC Comfort/Mobile RT, SIMATIC IPC DiagMonitor, SIMATIC WinCC Unified OPC UA Client/Server, and SIMATIC PCS neo as affected products; removed unaffected devices: 6ES7513-1RL00-0AB0, 6ES7513-1RM03-0AB0, 6ES7515-2RM00-0AB0, 6ES7515-2RN03-0AB0, 6AG1515-2RM00-7AB0, 6AG2515-2RM00-4AB0, 6ES7517-3HP00-0AB0, 6AG1517-3HP00-4AB0, 6ES7518-4JP00-0AB0, 6AG1518-4JP00-4AB0; added fix for SIMATIC S7-PLCSIM Advanced |
V1.4 (2024-01-09): | No fix planned for SIMATIC IPC DiagMonitor |
V1.5 (2024-02-13): | Added fix for SIMATIC WinCC Unified OPC UA Client/Server; Added SIMATIC PCS 7 V9.1 as affected; Added specific mitigation measure for CVE-2023-28831 (disable OPC UA) |
V1.6 (2024-03-12): | Removed unaffected device SIMATIC S7-1200 CPU family (incl. SIPLUS variants), added SIMATIC WinCC (Classic and Runtime Professional) and Totally Integrated Automation Portal to the list of affected devices, no fix planned for SIMATIC PCS 7 V9.1 |
V1.7 (2024-04-09): | Added SIMATIC NET PC Software as affected product; added fix for SIMATIC NET PC Software V17, V18; added fix for SIMATIC S7-1500 Software Controller V3; removed unaffected product TIA Portal |
V1.8 (2024-05-14): | Added fix for SIMATIC ET 200SP Open Controller CPU 1515SP PC2 V30 |
V1.9 (2024-06-11): | Added fix for SIMATIC WinCC Runtime Professional V19 |
V2.0 (2024-07-09): | Added fix for SIMATIC WinCC V8.0 |
V2.1 (2024-10-08): | No fix planned for SIMATIC PCS neo V4.0; removed SIMATIC PCS neo V4.1 as not affected |