{ "document": { "acknowledgments": [ { "organization": "Siemens ProductCERT", "summary": "reporting this vulnerability to CISA." } ], "category": "csaf_security_advisory", "csaf_version": "2.0", "distribution": { "text": "Disclosure is not limited", "tlp": { "label": "WHITE", "url": "https://us-cert.cisa.gov/tlp/" } }, "notes": [ { "category": "summary", "text": "A vulnerability made public under the name SAD DNS affects Domain Name \nSystem resolvers due to a vulnerability in the Linux kernel when \nhandling ICMP packets. The Siemens products which are affected\nare listed below. For more information please see \nhttps://www.saddns.net/.\nSiemens has released updates for the affected products and recommends to update to the latest versions.", "title": "Summary" }, { "category": "general", "text": "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: \nhttps://www.siemens.com/cert/operational-guidelines-industrial-security), and to follow the recommendations in the product manuals.\nAdditional information on Industrial Security by Siemens can be found at: https://www.siemens.com/industrialsecurity", "title": "General Recommendations" }, { "category": "general", "text": "For further inquiries on security vulnerabilities in Siemens products and solutions, please contact the Siemens ProductCERT: https://www.siemens.com/cert/advisories", "title": "Additional Resources" }, { "category": "legal_disclaimer", "text": "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.", "title": "Terms of Use" }, { "category": "legal_disclaimer", "text": "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/.", "title": "Legal Notice" }, { "category": "other", "text": "This CISA CSAF advisory was converted from Siemens ProductCERT's CSAF advisory.", "title": "Advisory Conversion Disclaimer" }, { "category": "other", "text": "Multiple", "title": "Critical infrastructure sectors" }, { "category": "other", "text": "Worldwide", "title": "Countries/areas deployed" }, { "category": "other", "text": "Germany", "title": "Company headquarters location" }, { "category": "general", "text": "CISA recommends users take defensive measures to minimize the exploitation risk of these vulnerabilities.", "title": "Recommended Practices" }, { "category": "general", "text": "Minimize network exposure for all control system devices and/or systems, and ensure they are not accessible from the internet.", "title": "Recommended Practices" }, { "category": "general", "text": "Locate control system networks and remote devices behind firewalls and isolate them from business networks.", "title": "Recommended Practices" }, { "category": "general", "text": "When remote access is required, use more secure methods, such as Virtual Private Networks (VPNs), recognizing VPNs may have vulnerabilities and should be updated to the most recent version available. Also recognize VPN is only as secure as its connected devices.", "title": "Recommended Practices" }, { "category": "general", "text": "CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.", "title": "Recommended Practices" }, { "category": "general", "text": "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.", "title": "Recommended Practices" }, { "category": "general", "text": "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.", "title": "Recommended Practices" }, { "category": "general", "text": "Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents.", "title": "Recommended Practices" } ], "publisher": { "category": "other", "contact_details": "central@cisa.dhs.gov", "name": "CISA", "namespace": "https://www.cisa.gov/" }, "references": [ { "category": "self", "summary": "SSA-324955: SAD DNS Attack in Linux Based Products - CSAF Version", "url": "https://cert-portal.siemens.com/productcert/csaf/ssa-324955.json" }, { "category": "self", "summary": "SSA-324955: SAD DNS Attack in Linux Based Products - TXT Version", "url": "https://cert-portal.siemens.com/productcert/txt/ssa-324955.txt" }, { "category": "self", "summary": "SSA-324955: SAD DNS Attack in Linux Based Products - PDF Version", "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-324955.pdf" }, { "category": "self", "summary": "ICS Advisory ICSA-21-131-03 JSON", "url": "https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2021/icsa-21-131-03.json" }, { "category": "self", "summary": "ICS Advisory ICSA-21-131-03 - Web Version", "url": "https://www.cisa.gov/news-events/ics-advisories/icsa-21-131-03" }, { "category": "external", "summary": "Recommended Practices", "url": "https://www.cisa.gov/uscert/ics/alerts/ICS-ALERT-10-301-01" }, { "category": "external", "summary": "Recommended Practices", "url": "https://www.cisa.gov/resources-tools/resources/ics-recommended-practices" }, { "category": "external", "summary": "Recommended Practices", "url": "https://www.cisa.gov/topics/industrial-control-systems" }, { "category": "external", "summary": "Recommended Practices", "url": "https://us-cert.cisa.gov/sites/default/files/recommended_practices/NCCIC_ICS-CERT_Defense_in_Depth_2016_S508C.pdf" }, { "category": "external", "summary": "Recommended Practices", "url": "https://www.cisa.gov/sites/default/files/publications/Cybersecurity_Best_Practices_for_Industrial_Control_Systems.pdf" }, { "category": "external", "summary": "Recommended Practices", "url": "https://www.cisa.gov/uscert/ics/tips/ICS-TIP-12-146-01B" } ], "title": "Siemens Linux-based Products (Update J)", "tracking": { "current_release_date": "2023-03-14T00:00:00.000000Z", "generator": { "engine": { "name": "CISA CSAF Generator", "version": "1.0.0" } }, "id": "ICSA-21-131-03", "initial_release_date": "2021-05-11T00:00:00.000000Z", "revision_history": [ { "date": "2021-05-11T00:00:00.000000Z", "legacy_version": "1.0", "number": "1", "summary": "Publication Date" }, { "date": "2021-06-08T00:00:00.000000Z", "legacy_version": "1.1", "number": "2", "summary": "Added solution for TIM 1531 IRC" }, { "date": "2021-07-13T00:00:00.000000Z", "legacy_version": "1.2", "number": "3", "summary": "Added solution for SIMATIC NET CP 1243-7 LTE EU and SIMATIC NET CP 1243-7 LTE US" }, { "date": "2021-08-10T00:00:00.000000Z", "legacy_version": "1.3", "number": "4", "summary": "Added solution for SIMATIC NET CP 1543-1" }, { "date": "2021-09-14T00:00:00.000000Z", "legacy_version": "1.4", "number": "5", "summary": "Errata: Removed solution for TIM 1531 IRC as V2.2 did not fix the issue" }, { "date": "2021-10-12T00:00:00.000000Z", "legacy_version": "1.5", "number": "6", "summary": "Corrected wrong product name SIMATIC CP 1243-7 to SIMATIC CP 1242-7 GPRS V2, updated solution for SIMATIC CP 1243-7 LTE, added solution for SIMATIC CP 1242-7 GPRS V2 and SCALANCE W1750D" }, { "date": "2021-11-09T00:00:00.000000Z", "legacy_version": "1.6", "number": "7", "summary": "Added solution for SIMATIC Cloud Connect 7 and TIM 1531 IRC, split TIM 1531 IRC into individual products, split SIMATIC Cloud Connect 7 into individual products" }, { "date": "2021-12-14T00:00:00.000000Z", "legacy_version": "1.7", "number": "8", "summary": "Added solution for the SIMATIC MV500 family products" }, { "date": "2022-06-14T00:00:00.000000Z", "legacy_version": "1.8", "number": "9", "summary": "Added fix for SIMATIC CP 1545-1" }, { "date": "2022-08-09T00:00:00.000000Z", "legacy_version": "1.9", "number": "10", "summary": "Added fix for SIMATIC CP 1243-1 and CP 1243-8 IRC" }, { "date": "2023-03-14T00:00:00.000000Z", "legacy_version": "2.0", "number": "11", "summary": "Added fix for SIMATIC CP 1542SP-1, SIMATIC CP 1542SP-1 IRC, and SIMATIC CP 1543SP-1" } ], "status": "final", "version": "11" } }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_version_range", "name": ">=V5.0_and_=V5.0_and_=V5.0_and__V1.0_and_V1.6", "product": { "name": "SIMATIC Cloud Connect 7 CC712 (6GK1411-1AC00)", "product_id": "CSAFPID-0006", "product_identification_helper": { "model_numbers": [ "6GK1411-1AC00" ] } } } ], "category": "product_name", "name": "SIMATIC Cloud Connect 7 CC712 (6GK1411-1AC00)" }, { "branches": [ { "category": "product_version_range", "name": "<>_V1.0_and_V1.6", "product": { "name": "SIMATIC Cloud Connect 7 CC716 (6GK1411-5AC00)", "product_id": "CSAFPID-0007", "product_identification_helper": { "model_numbers": [ "6GK1411-5AC00" ] } } } ], "category": "product_name", "name": "SIMATIC Cloud Connect 7 CC716 (6GK1411-5AC00)" }, { "branches": [ { "category": "product_version_range", "name": ">=V3.1.39_=V3.1.39_and_=V3.1.39_and_=V3.1.39_and_=V3.1.39_and_=V2.0_=V2.0_=V2.2_and_=V2.0_=V2.0_=V2.0_=V2.0_=V3.1.39_=V3.1.39_and_=V3.1.39_and_