{
  "document": {
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "distribution": {
      "text": "Disclosure is not limited. (TLPv2: TLP:CLEAR)",
      "tlp": {
        "label": "WHITE"
      }
    },
    "notes": [
      {
        "category": "summary",
        "text": "SINUMERIK ONE and SINUMERIK MC products are affected by a weak key protection vulnerability in the integrated S7-1500 CPU. The weak key protection vulnerability in the integrated S7-1500 CPU is documented in more detail in SSA-568427 [1].\n\nSiemens has released updates for the affected products and recommends to update to the latest versions.\n\n[1] \nhttps://cert-portal.siemens.com/productcert/html/ssa-568427.html",
        "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"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "productcert@siemens.com",
      "name": "Siemens ProductCERT",
      "namespace": "https://www.siemens.com"
    },
    "references": [
      {
        "category": "self",
        "summary": "SSA-568428: Weak Key Protection Vulnerability in SINUMERIK ONE and SINUMERIK MC - PDF Version",
        "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-568428.pdf"
      },
      {
        "category": "self",
        "summary": "SSA-568428: Weak Key Protection Vulnerability in SINUMERIK ONE and SINUMERIK MC - TXT Version",
        "url": "https://cert-portal.siemens.com/productcert/txt/ssa-568428.txt"
      },
      {
        "category": "self",
        "summary": "SSA-568428: Weak Key Protection Vulnerability in SINUMERIK ONE and SINUMERIK MC - CSAF Version",
        "url": "https://cert-portal.siemens.com/productcert/csaf/ssa-568428.json"
      }
    ],
    "title": "SSA-568428: Weak Key Protection Vulnerability in SINUMERIK ONE and SINUMERIK MC",
    "tracking": {
      "current_release_date": "2023-02-14T00:00:00Z",
      "generator": {
        "engine": {
          "name": "Siemens ProductCERT CSAF Generator",
          "version": "1"
        }
      },
      "id": "SSA-568428",
      "initial_release_date": "2022-11-08T00:00:00Z",
      "revision_history": [
        {
          "date": "2022-11-08T00:00:00Z",
          "legacy_version": "1.0",
          "number": "1",
          "summary": "Publication Date"
        },
        {
          "date": "2023-02-14T00:00:00Z",
          "legacy_version": "1.1",
          "number": "2",
          "summary": "Added fix information for SINUMERIK MC and SINUMERIK ONE"
        }
      ],
      "status": "final",
      "version": "2"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c V6.21",
                "product": {
                  "name": "SINUMERIK MC",
                  "product_id": "1"
                }
              }
            ],
            "category": "product_name",
            "name": "SINUMERIK MC"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c V6.21",
                "product": {
                  "name": "SINUMERIK ONE",
                  "product_id": "2"
                }
              }
            ],
            "category": "product_name",
            "name": "SINUMERIK ONE"
          }
        ],
        "category": "vendor",
        "name": "Siemens"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2022-38465",
      "cwe": {
        "id": "CWE-522",
        "name": "Insufficiently Protected Credentials"
      },
      "notes": [
        {
          "category": "summary",
          "text": "Affected products  protect the built-in global private key in a way that cannot be considered sufficient any longer. The key is used for the legacy protection of confidential configuration data and the legacy PG/PC and HMI communication.\r\n\r\nThis could allow attackers to discover the private key of a CPU product family by an offline attack against a single CPU of the family. Attackers could then use this knowledge to extract confidential configuration data from projects that are protected by that key or to perform attacks against legacy PG/PC and HMI communication.",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "1",
          "2"
        ]
      },
      "remediations": [
        {
          "category": "mitigation",
          "details": "Expose the communication between the S7-1500 CPU and the HMI of the affected products only to trusted network environments",
          "product_ids": [
            "1",
            "2"
          ]
        },
        {
          "category": "mitigation",
          "details": "Protect access to the TIA Portal project and SINUMERIK NCU (including related memory cards) from unauthorized actors",
          "product_ids": [
            "1",
            "2"
          ]
        },
        {
          "category": "vendor_fix",
          "details": "Update to V6.21 or later version\nSINUMERIK software can be obtained from your local Siemens account manager.",
          "product_ids": [
            "1",
            "2"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 9.3,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.1/AV:L/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"
          ]
        }
      ],
      "title": "CVE-2022-38465"
    }
  ]
}