{
  "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/"
      }
    },
    "lang": "en",
    "notes": [
      {
        "category": "summary",
        "text": "LOGO! V8.3 BM (incl. SIPLUS variants) devices contain a vulnerability that could allow an electromagnetic fault injection. This could allow an attacker to dump and debug the firmware, including the manipulation of memory. Further actions could allow to inject public keys of custom created key pairs which are then signed by the LOGO! V8.3 Product CA.\n\nThe vulnerability is related to the specific hardware architecture of the LOGO! V8.3 BM. Siemens has released new hardware versions with the LOGO! V8.4 BM product family for several affected devices in which the vulnerability is fixed and the Product CA private key is rotated. Siemens is working on new hardware versions for the SIPLUS devices to address this issue further. See the chapter \"Additional Information\" below for more details.\n\nFor more information please also refer to the related product support article: \nhttps://support.industry.siemens.com/cs/ww/en/view/109826554/.",
        "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\u0027 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\u0027 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\u0027 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\u0027s 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-844582: Electromagnetic Fault Injection in LOGO! V8.3 BM Devices Results in Broken LOGO! V8.3 Product CA - CSAF Version",
        "url": "https://cert-portal.siemens.com/productcert/csaf/ssa-844582.json"
      },
      {
        "category": "self",
        "summary": "SSA-844582: Electromagnetic Fault Injection in LOGO! V8.3 BM Devices Results in Broken LOGO! V8.3 Product CA - HTML Version",
        "url": "https://cert-portal.siemens.com/productcert/html/ssa-844582.html"
      },
      {
        "category": "self",
        "summary": "SSA-844582: Electromagnetic Fault Injection in LOGO! V8.3 BM Devices Results in Broken LOGO! V8.3 Product CA - PDF Version",
        "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-844582.pdf"
      },
      {
        "category": "self",
        "summary": "SSA-844582: Electromagnetic Fault Injection in LOGO! V8.3 BM Devices Results in Broken LOGO! V8.3 Product CA - TXT Version",
        "url": "https://cert-portal.siemens.com/productcert/txt/ssa-844582.txt"
      },
      {
        "category": "self",
        "summary": "ICS Advisory ICSA-23-348-04 JSON",
        "url": "https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2023/icsa-23-348-04.json"
      },
      {
        "category": "self",
        "summary": "ICS Advisory ICSA-23-348-04 - Web Version",
        "url": "https://www.cisa.gov/news-events/ics-advisories/icsa-23-348-04"
      },
      {
        "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 LOGO! and SIPLUS LOGO!",
    "tracking": {
      "current_release_date": "2023-12-12T00:00:00Z",
      "generator": {
        "engine": {
          "name": "CISA CSAF Generator",
          "version": "1"
        }
      },
      "id": "ICSA-23-348-04",
      "initial_release_date": "2023-12-12T00:00:00Z",
      "revision_history": [
        {
          "date": "2023-12-12T00:00:00Z",
          "legacy_version": "1.0",
          "number": "1",
          "summary": "Publication Date"
        }
      ],
      "status": "final",
      "version": "1"
    }
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                  }
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          }
        ],
        "category": "vendor",
        "name": "Siemens"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2022-42784",
      "cwe": {
        "id": "CWE-1319",
        "name": "Improper Protection against Electromagnetic Fault Injection (EM-FI)"
      },
      "notes": [
        {
          "category": "summary",
          "text": "Affected devices are vulnerable to an electromagnetic fault injection. This could allow an attacker to dump and debug the firmware, including the manipulation of memory. Further actions could allow to inject public keys of custom created key pairs which are then signed by the product CA. The generation of a custom certificate allows communication with, and impersonation of, any device of the same version.",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "1",
          "2",
          "7",
          "8",
          "3",
          "4",
          "5",
          "6",
          "9",
          "10",
          "15",
          "16",
          "11",
          "12",
          "13",
          "14"
        ]
      },
      "remediations": [
        {
          "category": "no_fix_planned",
          "details": "Currently no fix is planned",
          "product_ids": [
            "1",
            "2",
            "7",
            "8",
            "3",
            "4",
            "5",
            "6",
            "9",
            "10",
            "15",
            "16",
            "11",
            "12",
            "13",
            "14"
          ]
        },
        {
          "category": "workaround",
          "details": "Use HTTPS communication only in trusted networks without unknown network devices",
          "product_ids": [
            "1",
            "2",
            "7",
            "8",
            "3",
            "4",
            "5",
            "6",
            "9",
            "10",
            "15",
            "16",
            "11",
            "12",
            "13",
            "14"
          ]
        },
        {
          "category": "workaround",
          "details": "If possible, connect the Base Module directly with LOGO! Soft Comfort and the Web Browser",
          "product_ids": [
            "1",
            "2",
            "7",
            "8",
            "3",
            "4",
            "5",
            "6",
            "9",
            "10",
            "15",
            "16",
            "11",
            "12",
            "13",
            "14"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 7.6,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:P/RL:O/RC:C",
            "version": "3.1"
          },
          "products": [
            "1",
            "2",
            "7",
            "8",
            "3",
            "4",
            "5",
            "6",
            "9",
            "10",
            "15",
            "16",
            "11",
            "12",
            "13",
            "14"
          ]
        }
      ],
      "title": "CVE-2022-42784"
    }
  ]
}