-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 # SSA-592007: Denial of Service Vulnerability in Industrial Products Publication Date: 2018-03-20 Last Update: 2023-05-09 Current Version: 2.1 CVSS v3.1 Base Score: 6.5 SUMMARY ======= Several industrial controllers are affected by a security vulnerability that could allow an attacker to cause a denial of service condition via PROFINET DCP network packets under certain circumstances. Precondition for this scenario is a direct OSI Layer 2 access to the affected products. PROFIBUS interfaces are not affected. Siemens has released updates for several affected products and recommends to update to the latest versions. Siemens recommends specific countermeasures for products where updates are not, or not yet available. AFFECTED PRODUCTS AND SOLUTION ============================== * SIMATIC S7-400 CPU 414-3 PN/DP V7 (6ES7414-3EM07-0AB0) - Affected versions: All versions < V7.0.3 - Remediation: Update to V7.0.3 or later version See recommendations from section "Workarounds and Mitigations" - Download: https://support.industry.siemens.com/cs/ww/en/view/109752685/ * SIMATIC S7-400 CPU 414F-3 PN/DP V7 (6ES7414-3FM07-0AB0) - Affected versions: All versions < V7.0.3 - Remediation: Update to V7.0.3 or later version See recommendations from section "Workarounds and Mitigations" - Download: https://support.industry.siemens.com/cs/ww/en/view/109752685/ * SIMATIC S7-400 CPU 416-3 PN/DP V7 (6ES7416-3ES07-0AB0) - Affected versions: All versions < V7.0.3 - Remediation: Update to V7.0.3 or later version See recommendations from section "Workarounds and Mitigations" - Download: https://support.industry.siemens.com/cs/ww/en/view/109752685/ * SIMATIC S7-400 CPU 416F-3 PN/DP V7 (6ES7416-3FS07-0AB0) - Affected versions: All versions < V7.0.3 - Remediation: Update to V7.0.3 or later version See recommendations from section "Workarounds and Mitigations" - Download: https://support.industry.siemens.com/cs/ww/en/view/109752685/ * SIMATIC CP 343-1 (incl. SIPLUS variants) - Affected versions: All versions - Remediation: Currently no fix is planned See recommendations from section "Workarounds and Mitigations" * SIMATIC CP 343-1 Advanced (incl. SIPLUS variants) - Affected versions: All versions - Remediation: Currently no fix is planned See recommendations from section "Workarounds and Mitigations" * SIMATIC CP 443-1 (6GK7443-1EX30-0XE0) - Affected versions: All versions < V3.3 - Remediation: Update to V3.3 or later version See recommendations from section "Workarounds and Mitigations" - Download: https://support.industry.siemens.com/cs/ww/en/view/109817938/ * SIMATIC CP 443-1 (6GK7443-1EX30-0XE1) - Affected versions: All versions < V3.3 - Remediation: Update to V3.3 or later version See recommendations from section "Workarounds and Mitigations" - Download: https://support.industry.siemens.com/cs/ww/en/view/109817938/ * SIMATIC CP 443-1 Advanced (6GK7443-1GX30-0XE0) - Affected versions: All versions < V3.3 - Remediation: Update to V3.3 or later version See recommendations from section "Workarounds and Mitigations" - Download: https://support.industry.siemens.com/cs/ww/en/view/109817938/ * SIMATIC ET 200pro IM154-8 PN/DP CPU (6ES7154-8AB01-0AB0) - Affected versions: All versions < V3.2.16 - Remediation: Update to V3.2.16 or later version See further recommendations from section "Workarounds and Mitigations" - Download: https://support.industry.siemens.com/cs/ww/en/view/47354502/ * SIMATIC ET 200pro IM154-8F PN/DP CPU (6ES7154-8FB01-0AB0) - Affected versions: All versions < V3.2.16 - Remediation: Update to V3.2.16 or later version See further recommendations from section "Workarounds and Mitigations" - Download: https://support.industry.siemens.com/cs/ww/en/view/47354578/ * SIMATIC ET 200pro IM154-8FX PN/DP CPU (6ES7154-8FX00-0AB0) - Affected versions: All versions < V3.2.16 - Remediation: Update to V3.2.16 or later version See further recommendations from section "Workarounds and Mitigations" - Download: https://support.industry.siemens.com/cs/ww/en/view/62612377/ * SIMATIC ET 200S IM151-8 PN/DP CPU (6ES7151-8AB01-0AB0) - Affected versions: All versions < V3.2.16 - Remediation: Update to V3.2.16 or later version See further recommendations from section "Workarounds and Mitigations" - Download: https://support.industry.siemens.com/cs/ww/en/view/47353723/ * SIMATIC ET 200S IM151-8F PN/DP CPU (6ES7151-8FB01-0AB0) - Affected versions: All versions < V3.2.16 - Remediation: Update to V3.2.16 or later version See further recommendations from section "Workarounds and Mitigations" - Download: https://support.industry.siemens.com/cs/ww/en/view/47354354/ * SIMATIC S7-300 CPU 314C-2 PN/DP (6ES7314-6EH04-0AB0) - Affected versions: All versions < V3.3.16 - Remediation: Update to V3.3.16 or later version See further recommendations from section "Workarounds and Mitigations" - Download: https://support.industry.siemens.com/cs/ww/en/view/51466769/ * SIMATIC S7-300 CPU 315-2 PN/DP (6ES7315-2EH14-0AB0) - Affected versions: All versions < V3.2.16 - Remediation: Update to V3.2.16 or later version See further recommendations from section "Workarounds and Mitigations" - Download: https://support.industry.siemens.com/cs/ww/en/view/40360647/ * SIMATIC S7-300 CPU 315F-2 PN/DP (6ES7315-2FJ14-0AB0) - Affected versions: All versions < V3.2.16 - Remediation: Update to V3.2.16 or later version See further recommendations from section "Workarounds and Mitigations" - Download: https://support.industry.siemens.com/cs/ww/en/view/40944925/ * SIMATIC S7-300 CPU 315T-3 PN/DP (6ES7315-7TJ10-0AB0) - Affected versions: All versions < V3.2.16 - Remediation: Update to V3.2.16 or later version See further recommendations from section "Workarounds and Mitigations" - Download: https://support.industry.siemens.com/cs/ww/en/view/85049260/ * SIMATIC S7-300 CPU 317-2 PN/DP (6ES7317-2EK14-0AB0) - Affected versions: All versions < V3.2.16 - Remediation: Update to V3.2.16 or later version See further recommendations from section "Workarounds and Mitigations" - Download: https://support.industry.siemens.com/cs/ww/en/view/40362228/ * SIMATIC S7-300 CPU 317F-2 PN/DP (6ES7317-2FK14-0AB0) - Affected versions: All versions < V3.2.16 - Remediation: Update to V3.2.16 or later version See further recommendations from section "Workarounds and Mitigations" - Download: https://support.industry.siemens.com/cs/ww/en/view/40945128/ * SIMATIC S7-300 CPU 317T-3 PN/DP (6ES7317-7TK10-0AB0) - Affected versions: All versions < V3.2.16 - Remediation: Update to V3.2.16 or later version See further recommendations from section "Workarounds and Mitigations" - Download: https://support.industry.siemens.com/cs/ww/en/view/85059804/ * SIMATIC S7-300 CPU 317TF-3 PN/DP (6ES7317-7UL10-0AB0) - Affected versions: All versions < V3.2.16 - Remediation: Update to V3.2.16 or later version See further recommendations from section "Workarounds and Mitigations" - Download: https://support.industry.siemens.com/cs/ww/en/view/85063017/ * SIMATIC S7-300 CPU 319-3 PN/DP (6ES7318-3EL01-0AB0) - Affected versions: All versions < V3.2.16 - Remediation: Update to V3.2.16 or later version See further recommendations from section "Workarounds and Mitigations" - Download: https://support.industry.siemens.com/cs/ww/en/view/44442927/ * SIMATIC S7-300 CPU 319F-3 PN/DP (6ES7318-3FL01-0AB0) - Affected versions: All versions < V3.2.16 - Remediation: Update to V3.2.16 or later version See further recommendations from section "Workarounds and Mitigations" - Download: https://support.industry.siemens.com/cs/ww/en/view/44443101/ * SIMATIC S7-400 CPU 412-2 PN V7 (6ES7412-2EK07-0AB0) - Affected versions: All versions < V7.0.3 - Remediation: Update to V7.0.3 or later version See recommendations from section "Workarounds and Mitigations" - Download: https://support.industry.siemens.com/cs/ww/en/view/109752685/ * SIMATIC S7-400 H V6 CPU family (incl. SIPLUS variants) - Affected versions: All versions < V6.0.9 - Remediation: Update to V6.0.9 See further recommendations from section "Workarounds and Mitigations" - Download: https://support.industry.siemens.com/cs/ww/en/view/109474550 * SIMATIC S7-400 PN/DP V6 CPU family (incl. SIPLUS variants) - Affected versions: All versions < V6.0.7 - Remediation: Update to V6.0.7 See further recommendations from section "Workarounds and Mitigations" - Download: https://support.industry.siemens.com/cs/ww/en/view/109474874 * SIMATIC S7-410 CPU family (incl. SIPLUS variants) - Affected versions: All versions < V8.1 - Remediation: Update to V8.1 or later version See further recommendations from section "Workarounds and Mitigations" - Download: https://support.industry.siemens.com/cs/ww/en/view/109476571 * SIMATIC S7-1500 CPU family (incl. related ET200 CPUs and SIPLUS variants) - Affected versions: All versions < V1.7.0 - Remediation: Update to V1.7.0 or later version See further recommendations from section "Workarounds and Mitigations" - Download: https://support.industry.siemens.com/cs/ww/en/view/109478459/ * SIMATIC S7-1500 Software Controller - Affected versions: All versions < V1.7.0 - Remediation: Update to V1.7.0 or later version See further recommendations from section "Workarounds and Mitigations" - Download: https://support.industry.siemens.com/cs/ww/en/view/109478528/ * SIMATIC WinAC RTX 2010 (6ES7671-0RC08-0YA0) - Affected versions: All versions < V2010 SP3 - Remediation: Update to V2010 SP3 or later version and apply BIOS and Microsoft Windows updates See further recommendations from section "Workarounds and Mitigations" - Download: https://support.industry.siemens.com/cs/ww/en/view/109765109/ * SIMATIC WinAC RTX F 2010 (6ES7671-1RC08-0YA0) - Affected versions: All versions < V2010 SP3 - Remediation: Update to V2010 SP3 or later version and apply BIOS and Microsoft Windows updates See further recommendations from section "Workarounds and Mitigations" - Download: https://support.industry.siemens.com/cs/ww/en/view/109765109/ * SINUMERIK 828D - Affected versions: All versions < V4.7 SP6 HF1 - Remediation: Update to V4.7 SP6 HF1 or later version See further recommendations from section "Workarounds and Mitigations" - Download: SINUMERIK software can be obtained from your local Siemens account manager * SIPLUS ET 200S IM151-8 PN/DP CPU (6AG1151-8AB01-7AB0) - Affected versions: All versions < V3.2.16 - Remediation: Update to V3.2.16 or later version See further recommendations from section "Workarounds and Mitigations" - Download: https://support.industry.siemens.com/cs/ww/en/view/47353723/ * SIPLUS ET 200S IM151-8F PN/DP CPU (6AG1151-8FB01-2AB0) - Affected versions: All versions < V3.2.16 - Remediation: Update to V3.2.16 or later version See further recommendations from section "Workarounds and Mitigations" - Download: https://support.industry.siemens.com/cs/ww/en/view/47354354/ * SIPLUS NET CP 443-1 (6AG1443-1EX30-4XE0) - Affected versions: All versions < V3.3 - Remediation: Update to V3.3 or later version See recommendations from section "Workarounds and Mitigations" - Download: https://support.industry.siemens.com/cs/ww/en/view/109817938/ * SIPLUS NET CP 443-1 Advanced (6AG1443-1GX30-4XE0) - Affected versions: All versions < V3.3 - Remediation: Update to V3.3 or later version See recommendations from section "Workarounds and Mitigations" - Download: https://support.industry.siemens.com/cs/ww/en/view/109817938/ * SIPLUS S7-300 CPU 314C-2 PN/DP (6AG1314-6EH04-7AB0) - Affected versions: All versions < V3.3.16 - Remediation: Update to V3.3.16 or later version See further recommendations from section "Workarounds and Mitigations" - Download: https://support.industry.siemens.com/cs/ww/en/view/51466769/ * SIPLUS S7-300 CPU 315-2 PN/DP (6AG1315-2EH14-7AB0) - Affected versions: All versions < V3.2.16 - Remediation: Update to V3.2.16 or later version See further recommendations from section "Workarounds and Mitigations" - Download: https://support.industry.siemens.com/cs/ww/en/view/40360647/ * SIPLUS S7-300 CPU 315F-2 PN/DP (6AG1315-2FJ14-2AB0) - Affected versions: All versions < V3.2.16 - Remediation: Update to V3.2.16 or later version See further recommendations from section "Workarounds and Mitigations" - Download: https://support.industry.siemens.com/cs/ww/en/view/40944925/ * SIPLUS S7-300 CPU 317-2 PN/DP (6AG1317-2EK14-7AB0) - Affected versions: All versions < V3.2.16 - Remediation: Update to V3.2.16 or later version See further recommendations from section "Workarounds and Mitigations" - Download: https://support.industry.siemens.com/cs/ww/en/view/40362228/ * SIPLUS S7-300 CPU 317F-2 PN/DP (6AG1317-2FK14-2AB0) - Affected versions: All versions < V3.2.16 - Remediation: Update to V3.2.16 or later version See further recommendations from section "Workarounds and Mitigations" - Download: https://support.industry.siemens.com/cs/ww/en/view/40945128/ * SIPLUS S7-400 CPU 414-3 PN/DP V7 (6AG1414-3EM07-7AB0) - Affected versions: All versions < V7.0.3 - Remediation: Update to V7.0.3 or later version See recommendations from section "Workarounds and Mitigations" - Download: https://support.industry.siemens.com/cs/ww/en/view/109752685/ * SIPLUS S7-400 CPU 416-3 PN/DP V7 (6AG1416-3ES07-7AB0) - Affected versions: All versions < V7.0.3 - Remediation: Update to V7.0.3 or later version See recommendations from section "Workarounds and Mitigations" - Download: https://support.industry.siemens.com/cs/ww/en/view/109752685/ * Softnet PROFINET IO for PC-based Windows systems - Affected versions: All versions - Remediation: Currently no fix is planned See recommendations from section "Workarounds and Mitigations" WORKAROUNDS AND MITIGATIONS =========================== Siemens has identified the following specific workarounds and mitigations that customers can apply to reduce the risk: * Use VPN for protecting network communication between cells. Product-specific remediations or mitigations can be found in the section "Affected Products and Solution". Please follow the "General Security Recommendations". 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 PRODUCT DESCRIPTION =================== SIMATIC CP 343-1 and CP 443-1 are communication processors (CP) designed to enable Ethernet communication for SIMATIC S7-300/S7-400 CPUs. SIMATIC S7-1500 CPU products have been designed for discrete and continuous control in industrial environments such as manufacturing, food and beverages, and chemical industries worldwide. SIMATIC S7-1500 Software Controller is a SIMATIC software controller for PC-based automation solutions. SIMATIC S7-300 controllers have been designed for discrete and continuous control in industrial environments such as manufacturing, food and beverages, and chemical industries worldwide. SIMATIC S7-400 controllers have been designed for discrete and continuous control in industrial environments such as manufacturing, food and beverages, and chemical industries worldwide. SIMATIC WinAC RTX is a SIMATIC software controller for PC-based automation solutions. SINUMERIK CNC offers automation solutions for the shop floor, job shops and large serial production environments. SIPLUS extreme products are designed for reliable operation under extreme conditions and are based on SIMATIC, LOGO!, SITOP, SINAMICS, SIMOTION, SCALANCE or other devices. SIPLUS devices use the same firmware as the product they are based on. Softnet PROFINET IO for PC-based Windows systems allows setting up open control solutions on standard PC hardware. VULNERABILITY CLASSIFICATION ============================ The vulnerability classification has been performed by using the CVSS scoring system in version 3.1 (CVSS v3.1) (https://www.first.org/cvss/). The CVSS environmental score is specific to the customer's environment and will impact the overall CVSS score. The environmental score should therefore be individually defined by the customer to accomplish final scoring. An additional classification has been performed using the CWE classification, a community-developed list of common software security weaknesses. This serves as a common language and as a baseline for weakness identification, mitigation, and prevention efforts. A detailed list of CWE classes can be found at: https://cwe.mitre.org/. * Vulnerability CVE-2018-4843 Responding to a PROFINET DCP request with a specially crafted PROFINET DCP packet could cause a denial of service condition of the requesting system. The security vulnerability could be exploited by an attacker located on the same Ethernet segment (OSI Layer 2) as the targeted device. A manual restart is required to recover the system. CVSS v3.1 Base Score: 6.5 CVSS Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C CWE: CWE-20: Improper Input Validation ACKNOWLEDGMENTS =============== Siemens thanks the following party for its efforts: * Artem Zinenko from Kaspersky for pointing out that SIPLUS should also be mentioned ADDITIONAL INFORMATION ====================== For further inquiries on security vulnerabilities in Siemens products and solutions, please contact the Siemens ProductCERT: https://www.siemens.com/cert/advisories HISTORY DATA ============ V1.0 (2018-03-20): Publication Date V1.1 (2018-03-27): Removed SINUMERIK 840D sl from affected products V1.2 (2018-10-09): Added update for SINUMERIK 828D V1.3 (2019-01-08): Added update for SIMATIC S7-300 incl. F and T V1.4 (2019-05-14): Added update for S7-400 H V6 V1.5 (2019-10-08): Renamed SIMATIC WinAC RTX 2010 incl. F to SIMATIC WinAC RTX (F) 2010 and added update information for SIMATIC WinAC RTX (F) 2010 V1.6 (2020-02-10): SIPLUS devices now explicitly mentioned in the list of affected products V1.7 (2022-06-14): No fix planned for SIMATIC CP 343-1 and SIMATIC CP 443-1 Advanced V1.8 (2022-08-09): Clarify no fix planned for SIMATIC CP 343-1 Advanced (incl. SIPLUS variants) V1.9 (2023-01-10): SIMATIC S7-300 CPU family expanded with product specific designations, patch links and MLFBs; No fix planned for SIMATIC S7-400 PN/DP V7 CPU family (incl. SIPLUS variants) V2.0 (2023-04-11): Added fix for SIMATIC CP 443-1 and CP 443-1 Advanced V2.1 (2023-05-09): Added fix for SIMATIC S7-400 PN/DP V7 CPU family (incl. SIPLUS variants); expanded SIMATIC S7-400 PN/DP V7 CPU family (incl. SIPLUS variants) to individual products and MLFBs; reviewed CVSS score and description of CVE-2018-4843 TERMS OF USE ============ Siemens Security Advisories are subject to the terms and conditions contained in Siemens' underlying license terms or other applicable agreements previously agreed to with Siemens (hereinafter "License Terms"). To the extent applicable to information, software or documentation made available in or through a Siemens Security Advisory, the Terms of Use of Siemens' Global Website (https://www.siemens.com/terms_of_use, hereinafter "Terms of Use"), in particular Sections 8-10 of the Terms of Use, shall apply additionally. In case of conflicts, the License Terms shall prevail over the Terms of Use. 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