{
  "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 login dialog box of SIMATIC WinCC could allow a local attacker to cause a denial of service condition in the runtime of the SCADA system.\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": "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-730482: Denial of Service Vulnerability in SIMATIC WinCC - HTML Version",
        "url": "https://cert-portal.siemens.com/productcert/html/ssa-730482.html"
      },
      {
        "category": "self",
        "summary": "SSA-730482: Denial of Service Vulnerability in SIMATIC WinCC - CSAF Version",
        "url": "https://cert-portal.siemens.com/productcert/csaf/ssa-730482.json"
      },
      {
        "category": "self",
        "summary": "SSA-730482: Denial of Service Vulnerability in SIMATIC WinCC - PDF Version",
        "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-730482.pdf"
      },
      {
        "category": "self",
        "summary": "SSA-730482: Denial of Service Vulnerability in SIMATIC WinCC - TXT Version",
        "url": "https://cert-portal.siemens.com/productcert/txt/ssa-730482.txt"
      }
    ],
    "title": "SSA-730482: Denial of Service Vulnerability in SIMATIC WinCC",
    "tracking": {
      "current_release_date": "2024-04-09T00:00:00Z",
      "generator": {
        "engine": {
          "name": "Siemens ProductCERT CSAF Generator",
          "version": "1"
        }
      },
      "id": "SSA-730482",
      "initial_release_date": "2024-04-09T00:00:00Z",
      "revision_history": [
        {
          "date": "2024-04-09T00:00:00Z",
          "legacy_version": "1.0",
          "number": "1",
          "summary": "Publication Date"
        }
      ],
      "status": "interim",
      "version": "1"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "All versions \u003c V9.1 SP2 UC04",
                "product": {
                  "name": "SIMATIC PCS 7 V9.1",
                  "product_id": "1"
                }
              }
            ],
            "category": "product_name",
            "name": "SIMATIC PCS 7 V9.1"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:all/*",
                "product": {
                  "name": "SIMATIC WinCC Runtime Professional V17",
                  "product_id": "2"
                }
              }
            ],
            "category": "product_name",
            "name": "SIMATIC WinCC Runtime Professional V17"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:all/*",
                "product": {
                  "name": "SIMATIC WinCC Runtime Professional V18",
                  "product_id": "3"
                }
              }
            ],
            "category": "product_name",
            "name": "SIMATIC WinCC Runtime Professional V18"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "All versions \u003c V19 Update 1",
                "product": {
                  "name": "SIMATIC WinCC Runtime Professional V19",
                  "product_id": "4"
                }
              }
            ],
            "category": "product_name",
            "name": "SIMATIC WinCC Runtime Professional V19"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "All versions \u003c V7.5 SP2 Update 16",
                "product": {
                  "name": "SIMATIC WinCC V7.5",
                  "product_id": "5"
                }
              }
            ],
            "category": "product_name",
            "name": "SIMATIC WinCC V7.5"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:all/*",
                "product": {
                  "name": "SIMATIC WinCC V8.0",
                  "product_id": "6"
                }
              }
            ],
            "category": "product_name",
            "name": "SIMATIC WinCC V8.0"
          }
        ],
        "category": "vendor",
        "name": "Siemens"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2023-50821",
      "cwe": {
        "id": "CWE-120",
        "name": "Buffer Copy without Checking Size of Input (\u0027Classic Buffer Overflow\u0027)"
      },
      "notes": [
        {
          "category": "summary",
          "text": "The affected products do not properly validate the input provided in the login dialog box. An attacker could leverage this vulnerability to cause a persistent denial of service condition.",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "1",
          "2",
          "3",
          "4",
          "5",
          "6"
        ]
      },
      "remediations": [
        {
          "category": "mitigation",
          "details": "Activate SIMATIC Logon in the User Administrator of the SIMATIC PCS 7 Operator Stations",
          "product_ids": [
            "1",
            "2",
            "3",
            "4",
            "5",
            "6"
          ]
        },
        {
          "category": "none_available",
          "details": "Currently no fix is available",
          "product_ids": [
            "2",
            "3",
            "6"
          ]
        },
        {
          "category": "vendor_fix",
          "details": "Update to V19 Update 1 or later version",
          "product_ids": [
            "4"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109820999/"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V7.5 SP2 Update 16 or later version",
          "product_ids": [
            "5"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109793460/"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V9.1 SP2 UC04 or later version",
          "product_ids": [
            "1"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109812242/"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 6.2,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:L/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"
          ]
        }
      ],
      "title": "CVE-2023-50821"
    }
  ]
}