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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2022.5794 ICS Advisory (ICSA-22-314-02) Siemens Web Server Login Page of Industrial Controllers 11 November 2022 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: SIMATIC Industrial Controllers and Software Publisher: ICS-CERT Operating System: Network Appliance Resolution: Patch/Upgrade CVE Names: CVE-2022-30694 Original Bulletin: https://us-cert.cisa.gov/ics/advisories/icsa-22-314-02 Comment: CVSS (Max): 6.5 CVE-2022-30694 (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N) CVSS Source: ICS-CERT Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N - --------------------------BEGIN INCLUDED TEXT-------------------- ICS Advisory (ICSA-22-314-02) Siemens Web Server Login Page of Industrial Controllers Original release date: November 10, 2022 Legal Notice All information products included in https://us-cert.cisa.gov/ics are provided "as is" for informational purposes only. The Department of Homeland Security (DHS) does not provide any warranties of any kind regarding any information contained within. DHS does not endorse any commercial product or service, referenced in this product or otherwise. Further dissemination of this product is governed by the Traffic Light Protocol (TLP) marking in the header. For more information about TLP, see https://us-cert.cisa.gov/tlp/ . 1. EXECUTIVE SUMMARY o CVSS v3 6.5 o ATTENTION: Exploitable Remotely/low Attack Complexity o Vendor: Siemens o Equipment: SIMATIC Industrial Controllers and Software o Vulnerability: Cross-Site Request Forgery (CSRF) 2. RISK EVALUATION Successful exploitation of this vulnerability could allow an attacker to track the activity of other users. 3. TECHNICAL DETAILS 3.1 AFFECTED PRODUCTS The web server login pages of the following Siemens devices are affected: o SIMATIC Drive Controller family: All versions. o SIMATIC ET 200pro IM154-8 PN/DP CPU (6ES7154-8AB01-0AB0): All versions prior to V3.2.19. o SIMATIC ET 200pro IM154-8F PN/DP CPU (6ES7154-8FB01-0AB0): All versions prior to V3.2.19. o SIMATIC ET 200pro IM154-8FX PN/DP CPU (6ES7154-8FX00-0AB0): All versions prior to V3.2.19. o SIMATIC ET 200S IM151-8 PN/DP CPU (6ES7151-8AB01-0AB0): All versions prior to V3.2.19. o SIMATIC ET 200S IM151-8F PN/DP CPU (6ES7151-8FB01-0AB0): All versions prior to V3.2.19. o SIMATIC PC Station: All versions V2.1 and later. o SIMATIC S7-300 CPU 314C-2 PN/DP (6ES7314-6EH04-0AB0): All versions prior to V3.3.19. o SIMATIC S7-300 CPU 315-2 PN/DP (6ES7315-2EH14-0AB0): All versions prior to V3.2.19. o SIMATIC S7-300 CPU 315F-2 PN/DP (6ES7315-2FJ14-0AB0): All versions prior to V3.2.19. o SIMATIC S7-300 CPU 315T-3 PN/DP (6ES7315-7TJ10-0AB0): All versions prior to V3.2.19. o SIMATIC S7-300 CPU 317-2 PN/DP (6ES7317-2EK14-0AB0): All versions prior to V3.2.19. o SIMATIC S7-300 CPU 317F-2 PN/DP (6ES7317-2FK14-0AB0): All versions prior to V3.2.19. o SIMATIC S7-300 CPU 317T-3 PN/DP (6ES7317-7TK10-0AB0): All versions prior to V3.2.19. o SIMATIC S7-300 CPU 317TF-3 PN/DP (6ES7317-7UL10-0AB0): All versions prior to V3.2.19. o SIMATIC S7-300 CPU 319-3 PN/DP (6ES7318-3EL01-0AB0): All versions prior to V3.2.19. o SIMATIC S7-300 CPU 319F-3 PN/DP (6ES7318-3FL01-0AB0): All versions prior to V3.2.19. o SIMATIC S7-400 PN/DP V6 CPU family (incl. SIPLUS variants): All versions. o SIMATIC S7-400 PN/DP V7 CPU family (incl. SIPLUS variants): All versions. o SIMATIC S7-1200 CPU family (incl. SIPLUS variants): All versions. o SIMATIC S7-1500 CPU family (incl. related ET200 CPUs and SIPLUS variants): All versions. o SIMATIC S7-1500 Software Controller: All versions. o SIMATIC S7-PLCSIM Advanced: All versions. o SIMATIC WinCC Runtime Advanced: All versions. o SINUMERIK ONE: All versions. o SIPLUS ET 200S IM151-8 PN/DP CPU (6AG1151-8AB01-7AB0): All versions prior to V3.2.19. o SIPLUS ET 200S IM151-8F PN/DP CPU (6AG1151-8FB01-2AB0): All versions prior to V3.2.19. o SIPLUS S7-300 CPU 314C-2 PN/DP (6AG1314-6EH04-7AB0): All versions prior to V3.3.19. o SIPLUS S7-300 CPU 315-2 PN/DP (6AG1315-2EH14-7AB0): All versions prior to V3.2.19. o SIPLUS S7-300 CPU 315F-2 PN/DP (6AG1315-2FJ14-2AB0): All versions prior to V3.2.19. o SIPLUS S7-300 CPU 317-2 PN/DP (6AG1317-2EK14-7AB0): All versions prior to V3.2.19. o SIPLUS S7-300 CPU 317F-2 PN/DP (6AG1317-2FK14-2AB0): All versions prior to V3.2.19. 3.2 VULNERABILITY OVERVIEW 3.2.1 CROSS-SITE REQUEST FORGERY (CSRF) CWE-352 The login endpoint /FormLogin in affected web services does not apply proper origin checking. This could allow authenticated remote attackers to track the activities of other users via a login cross-site request forgery attack. CVE-2022-30694 has been assigned to this vulnerability. A CVSS v3 base score of 6.5 has been calculated. the CVSS vector string is ( CVSS:3.1/AV:N/AC:L/PR:N/ UI:R/S:U/C:H/I:N/A:N ) 3.3 BACKGROUND o CRITICAL INFRASTRUCTURE SECTORS: Critical Manufacturing o COUNTRIES/AREAS DEPLOYED: Worldwide o COMPANY HEADQUARTERS LOCATION: Germany 3.4 RESEARCHER K Narahari from Sectrio reported these vulnerabilities to Siemens. 4. MITIGATIONS Siemens has released updates for the following products and recommends updating to the latest versions: o SIMATIC ET 200pro IM154-8 PN/DP CPU (6ES7154-8AB01-0AB0): Update to V3.2.19 or later. o SIMATIC ET 200pro IM154-8F PN/DP CPU (6ES7154-8FB01-0AB0): Update to V3.2.19 or later. o SIMATIC ET 200pro IM154-8FX PN/DP CPU (6ES7154-8FX00-0AB0): Update to V3.2.19 or later. o SIMATIC ET 200S IM151-8 PN/DP CPU (6ES7151-8AB01-0AB0): Update to V3.2.19 or later. o SIMATIC ET 200S IM151-8F PN/DP CPU (6ES7151-8FB01-0AB0): Update to V3.2.19 or later. o SIMATIC S7-300 CPU 314C-2 PN/DP (6ES7314-6EH04-0AB0): Update to V3.3.19 or later. o SIMATIC S7-300 CPU 315-2 PN/DP (6ES7315-2EH14-0AB0): Update to V3.2.19 or later. o SIMATIC S7-300 CPU 315F-2 PN/DP (6ES7315-2FJ14-0AB0): Update to V3.2.19 or later. o SIMATIC S7-300 CPU 315T-3 PN/DP (6ES7315-7TJ10-0AB0): Update to V3.2.19 or later. o SIMATIC S7-300 CPU 317-2 PN/DP (6ES7317-2EK14-0AB0): Update to V3.2.19 or later. o SIMATIC S7-300 CPU 317F-2 PN/DP (6ES7317-2FK14-0AB0): Update to V3.2.19 or later. o SIMATIC S7-300 CPU 317T-3 PN/DP (6ES7317-7TK10-0AB0): Update to V3.2.19 or later. o SIMATIC S7-300 CPU 317TF-3 PN/DP (6ES7317-7UL10-0AB0): Update to V3.2.19 or later. o SIMATIC S7-300 CPU 319-3 PN/DP (6ES7318-3EL01-0AB0): Update to V3.2.19 or later. o SIMATIC S7-300 CPU 319F-3 PN/DP (6ES7318-3FL01-0AB0): Update to V3.2.19 or later. o SIPLUS ET 200S IM151-8 PN/DP CPU (6AG1151-8AB01-7AB0): Update to V3.2.19 or later. o SIPLUS ET 200S IM151-8F PN/DP CPU (6AG1151-8FB01-2AB0): Update to V3.2.19 or later. o SIPLUS S7-300 CPU 314C-2 PN/DP (6AG1314-6EH04-7AB0): Update to V3.3.19 or later. o SIPLUS S7-300 CPU 315-2 PN/DP (6AG1315-2EH14-7AB0): Update to V3.2.19 or later. o SIPLUS S7-300 CPU 315F-2 PN/DP (6AG1315-2FJ14-2AB0): Update to V3.2.19 or later. o SIPLUS S7-300 CPU 317-2 PN/DP (6AG1317-2EK14-7AB0): Update to V3.2.19 or later. o SIPLUS S7-300 CPU 317F-2 PN/DP (6AG1317-2FK14-2AB0): Update to V3.2.19 or later. Siemens has identified the following specific workarounds and mitigations users can apply to reduce risk: o Do not access the product's web service via URLs coming from untrusted sources. o Disable the web server if possible. o SIMATIC PC Station (Specifically): Disable the web server. Note that this feature is disabled by default. As a general security measure, Siemens recommends protecting network access to devices with appropriate mechanisms. To operate 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 further inquiries on security vulnerabilities in Siemens products and solutions, users should contact Siemens ProductCERT . For more information see Siemens Security Advisory SSA-478960 in HTML or CSAF . CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability these vulnerabilities. Specifically, users should: o Minimize network exposure for all control system devices and/or systems, and ensure they are not accessible from the Internet . o Locate control system networks and remote devices behind firewalls and isolate them from business networks. o When remote access is required, use secure methods, such as Virtual Private Networks (VPNs), recognizing VPNs may have vulnerabilities and should be updated to the most current version available. Also recognize VPN is only as secure as its 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 at cisa.gov/ics . 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 . Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov/ics 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. For any questions related to this report, please contact the CISA at: Email: CISAservicedesk@cisa.dhs.gov Toll Free: 1-888-282-0870 - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. 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On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: https://auscert.org.au/gpg-key/ iQIVAwUBY23C1ckNZI30y1K9AQjLAw/+KCSltHb1Qx8PcuNBY2BylgmUPEMKt4kU 8dJvw5PmjrrdMepWQa/cD0A6c9eEuh2NFECzmOrwN9fRYBXyEH/5dpBWdjt/QvH+ FN/EN3qG0sMsc2CpMBiTyPN3w0d1H7mW8vs68xh43nErzPX9ds8CpVYbOztOAoGV iCGUHjyHynfpM+tbL3QhFAweSXrVlRKqPszcPlFgTJhV6Jx5hnhT/FKMafLGCwcy ppO4iN72anEAV6secxnH33h7b7CrTmQKVUn0J4VUBJiR7EDwIapEQyLnfoaSm+sa HKfau5Gn83rVZyzF1H3cHYtIHXOjK9uYkD/qvdmzb9GCZTnmZ2GaxfHpeRxgYP2T YfuD1xb/fp4stURhEZd1FiQEUO5S3SAkQIArbDzKUbpeTSjEhCBGfQJTuEfGj/y0 cHR0ezcNNqeEA36wpzbQr0GglYeySMl63lHr3t8Gs1N95iLOibvLRuhidHyELr/B 56jZMYDw3MFreKI+S46zJNhbW5qwujNdO/Gc7FW4AlA4S8mW6XbB0vklfPgCXusQ 3CndOXcJfpz8bjtB9jteuQCZHg58+1CuM06iDKVr7MR3RpQS3qDWgPVm16RLcq1L Ev2TCDYBSghSJu0M/o5Gpy6Im/swKeVsEVCnyBf4AHQq7A4ktGOdz3mhbIN5yor/ 9ppmZtw0E5k= =IJ2T -----END PGP SIGNATURE-----