{
  "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": "SIPROTEC 5 devices contain a null pointer dereference vulnerability in the web service. This could allow an attacker to send unauthenticated maliciously crafted http request that could cause denial of service condition of the device. \n\nSiemens has released new versions for several affected products and recommends to update to the latest versions. Siemens is preparing further fix versions and recommends specific countermeasures for products where fixes are not, or not yet available.",
        "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\u0027s 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\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-322980: Denial of Service Vulnerability in SIPROTEC 5 Devices - HTML Version",
        "url": "https://cert-portal.siemens.com/productcert/html/ssa-322980.html"
      },
      {
        "category": "self",
        "summary": "SSA-322980: Denial of Service Vulnerability in SIPROTEC 5 Devices - CSAF Version",
        "url": "https://cert-portal.siemens.com/productcert/csaf/ssa-322980.json"
      },
      {
        "category": "self",
        "summary": "SSA-322980: Denial of Service Vulnerability in SIPROTEC 5 Devices - PDF Version",
        "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-322980.pdf"
      },
      {
        "category": "self",
        "summary": "SSA-322980: Denial of Service Vulnerability in SIPROTEC 5 Devices - TXT Version",
        "url": "https://cert-portal.siemens.com/productcert/txt/ssa-322980.txt"
      }
    ],
    "title": "SSA-322980: Denial of Service Vulnerability in SIPROTEC 5 Devices",
    "tracking": {
      "current_release_date": "2024-05-14T00:00:00Z",
      "generator": {
        "engine": {
          "name": "Siemens ProductCERT CSAF Generator",
          "version": "1"
        }
      },
      "id": "SSA-322980",
      "initial_release_date": "2023-04-11T00:00:00Z",
      "revision_history": [
        {
          "date": "2023-04-11T00:00:00Z",
          "legacy_version": "1.0",
          "number": "1",
          "summary": "Publication Date"
        },
        {
          "date": "2023-05-09T00:00:00Z",
          "legacy_version": "1.1",
          "number": "2",
          "summary": "Removed all non-impacted CP200 devices; added introduced version to CP300 devices; added additional mitigation measure"
        },
        {
          "date": "2023-09-12T00:00:00Z",
          "legacy_version": "1.2",
          "number": "3",
          "summary": "Added fix for SIPROTEC 5 6MD89 (CP300) and SIPROTEC 5 7ST85 (CP300)"
        },
        {
          "date": "2024-03-12T00:00:00Z",
          "legacy_version": "1.3",
          "number": "4",
          "summary": "Adjusted fix version for SIPROTEC 5 6MD89 (CP300) and SIPROTEC 5 7ST85 (CP300)"
        },
        {
          "date": "2024-05-14T00:00:00Z",
          "legacy_version": "1.4",
          "number": "5",
          "summary": "Added fix for SIPROTEC 5 7SJ81 (CP100), SIPROTEC 5 7SJ82 (CP100), SIPROTEC 5 7SK82 (CP100), SIPROTEC 5 Communication Module ETH-BA-2EL (installed on CP100 devices), SIPROTEC 5 Communication Module ETH-BB-2FO (installed on CP100 devices); Clarified that currently no fix is available for SIPROTEC 5 7SA82 (CP100), SIPROTEC 5 7SD82 (CP100), SIPROTEC 5 7SL82 (CP100), SIPROTEC 5 7UT82 (CP100)"
        }
      ],
      "status": "interim",
      "version": "5"
    }
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            ],
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          },
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              },
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              }
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        "category": "vendor",
        "name": "Siemens"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2023-28766",
      "cwe": {
        "id": "CWE-476",
        "name": "NULL Pointer Dereference"
      },
      "notes": [
        {
          "category": "summary",
          "text": "Affected devices lack proper validation of http request parameters of the hosted web service.\r\nAn unauthenticated remote attacker could send specially crafted packets that could cause denial of service condition of the target device.",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "1",
          "2",
          "3",
          "4",
          "5",
          "6",
          "7",
          "8",
          "9",
          "10",
          "11",
          "12",
          "13",
          "14",
          "15",
          "16",
          "17",
          "18",
          "19",
          "20",
          "21",
          "22",
          "23",
          "24",
          "25",
          "26",
          "27",
          "28",
          "29",
          "30",
          "31",
          "32",
          "33",
          "34",
          "35",
          "36",
          "37",
          "38",
          "39",
          "40",
          "41",
          "42",
          "43",
          "44",
          "45",
          "46"
        ]
      },
      "remediations": [
        {
          "category": "mitigation",
          "details": "Block access to port 4443/tcp e.g. with an external firewall",
          "product_ids": [
            "1",
            "2",
            "3",
            "4",
            "5",
            "6",
            "7",
            "8",
            "9",
            "10",
            "11",
            "12",
            "13",
            "14",
            "15",
            "16",
            "17",
            "18",
            "19",
            "20",
            "21",
            "22",
            "23",
            "24",
            "25",
            "26",
            "27",
            "28",
            "29",
            "30",
            "31",
            "32",
            "33",
            "34",
            "35",
            "36",
            "37",
            "38",
            "39",
            "40",
            "41",
            "42",
            "43",
            "44",
            "45",
            "46"
          ]
        },
        {
          "category": "mitigation",
          "details": "Disable web service using port 4443 for SIPROTEC 5 if it is not needed",
          "product_ids": [
            "1",
            "2",
            "3",
            "4",
            "5",
            "6",
            "7",
            "8",
            "9",
            "10",
            "11",
            "12",
            "13",
            "14",
            "15",
            "16",
            "17",
            "18",
            "19",
            "20",
            "21",
            "22",
            "23",
            "24",
            "25",
            "26",
            "27",
            "28",
            "29",
            "30",
            "31",
            "32",
            "33",
            "34",
            "35",
            "36",
            "37",
            "38",
            "39",
            "40",
            "41",
            "42",
            "43",
            "44",
            "45",
            "46"
          ]
        },
        {
          "category": "none_available",
          "details": "Currently no fix is available",
          "product_ids": [
            "6",
            "10",
            "23",
            "33"
          ]
        },
        {
          "category": "vendor_fix",
          "details": "Update to V9.40 or later version",
          "product_ids": [
            "46"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109796884/"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V9.40 or later version",
          "product_ids": [
            "7",
            "8",
            "9",
            "11",
            "12",
            "13",
            "19",
            "24",
            "39"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109757433/"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V9.40 or later version",
          "product_ids": [
            "15",
            "17",
            "18"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109751934/"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V9.40 or later version",
          "product_ids": [
            "21",
            "22"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109757434/"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V9.40 or later version",
          "product_ids": [
            "34",
            "35",
            "36"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109757438/"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V9.40 or later version",
          "product_ids": [
            "4"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109765263/"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V9.40 or later version",
          "product_ids": [
            "30",
            "31"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109768011/"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V9.40 or later version",
          "product_ids": [
            "5"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109757430/"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V9.40 or later version",
          "product_ids": [
            "25",
            "26"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109757433/"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V9.40 or later version",
          "product_ids": [
            "27"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109757429/"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V9.40 or later version",
          "product_ids": [
            "32"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109757431/"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V9.40 or later version",
          "product_ids": [
            "37"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109757438/"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V9.40 or later version",
          "product_ids": [
            "38"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109749865/"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V9.40 or later version",
          "product_ids": [
            "1",
            "2"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109757428/"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V9.40 or later version",
          "product_ids": [
            "41",
            "43",
            "45"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109740816/"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V9.40 or later version",
          "product_ids": [
            "40"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109800399/"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V9.40 or later version",
          "product_ids": [
            "29"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109768428/"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V9.64 or later version",
          "product_ids": [
            "28"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109740299/"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V9.64 or later version",
          "product_ids": [
            "3"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109742950/"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V8.89 or later V8.xx version",
          "product_ids": [
            "14",
            "16",
            "20",
            "42",
            "44"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C",
            "version": "3.1"
          },
          "products": [
            "1",
            "2",
            "3",
            "4",
            "5",
            "6",
            "7",
            "8",
            "9",
            "10",
            "11",
            "12",
            "13",
            "14",
            "15",
            "16",
            "17",
            "18",
            "19",
            "20",
            "21",
            "22",
            "23",
            "24",
            "25",
            "26",
            "27",
            "28",
            "29",
            "30",
            "31",
            "32",
            "33",
            "34",
            "35",
            "36",
            "37",
            "38",
            "39",
            "40",
            "41",
            "42",
            "43",
            "44",
            "45",
            "46"
          ]
        }
      ],
      "title": "CVE-2023-28766"
    }
  ]
}