{ "document": { "category": "csaf_security_advisory", "csaf_version": "2.0", "distribution": { "text": "Disclosure is not limited. (TLPv2: TLP:CLEAR)", "tlp": { "label": "WHITE" } }, "lang": "en", "notes": [ { "category": "summary", "text": "A vulnerability in the third party component SISCO MMS-EASE could allow attackers to cause a denial of service condition with SIPROTEC 5 devices.\n\nSiemens has released updates for the affected products and recommends to update to the latest versions.", "title": "Summary" }, { "category": "general", "text": "Operators of critical power systems (e.g. TSOs or DSOs) worldwide are usually required by regulations to build resilience into the power grids by applying multi-level redundant secondary protection schemes. It is therefore recommended that the operators check whether appropriate resilient protection measures are in place. The risk of cyber incidents impacting the grid's reliability can thus be minimized by virtue of the grid design.\nSiemens strongly recommends applying the provided security updates using the corresponding tooling and documented procedures made available with the product. If supported by the product, an automated means to apply the security updates across multiple product instances may be used. Siemens strongly recommends prior validation of any security update before being applied, and supervision by trained staff of the update process in the target environment. \nAs a general security measure Siemens strongly recommends to protect network access with appropriate mechanisms (e.g. firewalls, segmentation, VPN). It is advised to configure the environment according to our operational guidelines in order to run the devices in a protected IT environment.\n\nRecommended security guidelines can be found at:\n\nhttps://www.siemens.com/gridsecurity", "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" } ], "publisher": { "category": "vendor", "contact_details": "productcert@siemens.com", "name": "Siemens ProductCERT", "namespace": "https://www.siemens.com" }, "references": [ { "category": "self", "summary": "SSA-223771: SISCO Stack Vulnerability in SIPROTEC 5 Devices - HTML Version", "url": "https://cert-portal.siemens.com/productcert/html/ssa-223771.html" }, { "category": "self", "summary": "SSA-223771: SISCO Stack Vulnerability in SIPROTEC 5 Devices - CSAF Version", "url": "https://cert-portal.siemens.com/productcert/csaf/ssa-223771.json" }, { "category": "self", "summary": "SSA-223771: SISCO Stack Vulnerability in SIPROTEC 5 Devices - PDF Version", "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-223771.pdf" }, { "category": "self", "summary": "SSA-223771: SISCO Stack Vulnerability in SIPROTEC 5 Devices - TXT Version", "url": "https://cert-portal.siemens.com/productcert/txt/ssa-223771.txt" } ], "title": "SSA-223771: SISCO Stack Vulnerability in SIPROTEC 5 Devices", "tracking": { "current_release_date": "2023-08-08T00:00:00Z", "generator": { "engine": { "name": "Siemens ProductCERT CSAF Generator", "version": "1" } }, "id": "SSA-223771", "initial_release_date": "2022-12-13T00:00:00Z", "revision_history": [ { "date": "2022-12-13T00:00:00Z", "legacy_version": "1.0", "number": "1", "summary": "Publication Date" }, { "date": "2022-12-21T00:00:00Z", "legacy_version": "1.1", "number": "2", "summary": "Corrected affected products list, fix versions, and download links" }, { "date": "2023-03-14T00:00:00Z", "legacy_version": "1.2", "number": "3", "summary": "Corrected affected products list, fix versions, and download links" }, { "date": "2023-08-08T00:00:00Z", "legacy_version": "1.3", "number": "4", "summary": "Added fix for SIPROTEC 5 7ST85 (CP200)" } ], "status": "interim", "version": "4" } }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:all/