{
  "document": {
    "acknowledgments": [
      {
        "names": [
          "Daniel dos Santos",
          "Jos Wetzels"
        ],
        "organization": "Forecout Technologies",
        "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-US",
    "notes": [
      {
        "category": "general",
        "text": "This CSAF advisory was extracted from unstructured data and may contain inaccuracies. If you notice any errors, please reach out to the designated contact at CISA CSAF: central@cisa.dhs.gov",
        "title": "CISA Disclaimer"
      },
      {
        "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": "summary",
        "text": "Successful exploitation of this vulnerability could allow an attacker to impersonate other users or exploit the client-server protocol without being authenticated.",
        "title": "Risk evaluation"
      },
      {
        "category": "general",
        "text": "CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.\nCISA also provides a section for control systems security recommended practices on the ICS webpage on cisa.gov/icsSeveral recommended practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.",
        "title": "Recommended Practices"
      },
      {
        "category": "general",
        "text": "Additional mitigation guidance and recommended practices are publicly available on the ICS webpage on cisa.gov/icsin the Technical Information Paper, ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation Strategies.\nOrganizations observing any suspected malicious activity should follow their established internal procedures and report their findings to CISA for tracking and correlation against other incidents.",
        "title": "Recommended Practices"
      },
      {
        "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": "other",
        "text": "No known public exploits specifically target this vulnerability.",
        "title": "Exploitability"
      }
    ],
    "publisher": {
      "category": "coordinator",
      "contact_details": "Email: CISAservicedesk@cisa.dhs.gov;\n Toll Free: 1-888-282-0870",
      "name": "CISA",
      "namespace": "https://www.cisa.gov/"
    },
    "references": [
      {
        "category": "external",
        "summary": "SSA-111512: Client-side Authentication in SIMATIC WinCC OA - CSAF Version",
        "url": "https://cert-portal.siemens.com/productcert/csaf/ssa-111512.json"
      },
      {
        "category": "self",
        "summary": "ICS Advisory ICSA-22-172-06 JSON",
        "url": "https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2022/icsa-22-172-06.json"
      },
      {
        "category": "self",
        "summary": "ICS Advisory ICSA-22-172-06 Web Version",
        "url": "https://www.cisa.gov/news-events/ics-advisories/icsa-22-172-06"
      },
      {
        "category": "external",
        "summary": "Recommended Practices",
        "url": "https://www.cisa.gov/uscert/sites/default/files/recommended_practices/NCCIC_ICS-CERT_Defense_in_Depth_2016_S508C.pdf"
      },
      {
        "category": "external",
        "summary": "Recommended Practices",
        "url": "https://www.cisa.gov/uscert/ics/tips/ICS-TIP-12-146-01B"
      },
      {
        "category": "external",
        "summary": "SSA-111512: Client-side Authentication in SIMATIC WinCC OA - PDF Version",
        "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-111512.pdf"
      },
      {
        "category": "external",
        "summary": "SSA-111512: Client-side Authentication in SIMATIC WinCC OA - TXT Version",
        "url": "https://cert-portal.siemens.com/productcert/txt/ssa-111512.txt"
      }
    ],
    "title": "Siemens WinCC OA",
    "tracking": {
      "current_release_date": "2022-06-21T00:00:00.000000Z",
      "generator": {
        "engine": {
          "name": "CISA CSAF Generator",
          "version": "1.0.0"
        }
      },
      "id": "ICSA-22-172-06",
      "initial_release_date": "2022-06-21T00:00:00.000000Z",
      "revision_history": [
        {
          "date": "2022-06-21T00:00:00.000000Z",
          "legacy_version": "Initial",
          "number": "1",
          "summary": "Publication Date"
        }
      ],
      "status": "final",
      "version": "1"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "All versions in default configuration",
                "product": {
                  "name": "SIMATIC WinCC OA V3.16",
                  "product_id": "CSAFPID-0001"
                }
              }
            ],
            "category": "product_name",
            "name": "SIMATIC WinCC OA V3.16"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "All versions in non-default configuration",
                "product": {
                  "name": "SIMATIC WinCC OA V3.17",
                  "product_id": "CSAFPID-0002"
                }
              }
            ],
            "category": "product_name",
            "name": "SIMATIC WinCC OA V3.17"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "All versions in non-default configuration",
                "product": {
                  "name": "SIMATIC WinCC OA V3.18",
                  "product_id": "CSAFPID-0003"
                }
              }
            ],
            "category": "product_name",
            "name": "SIMATIC WinCC OA V3.18"
          }
        ],
        "category": "vendor",
        "name": "Siemens"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2022-33139",
      "cwe": {
        "id": "CWE-603",
        "name": "Use of Client-Side Authentication"
      },
      "notes": [
        {
          "category": "summary",
          "text": "Affected applications use client-side only authentication, when neither server-side authentication (SSA) nor Kerberos authentication is enabled.\n\nIn this configuration, attackers could impersonate other users or exploit the client-server protocol without being authenticated.",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-0001",
          "CSAFPID-0002",
          "CSAFPID-0003"
        ]
      },
      "references": [
        {
          "summary": "CVE-2022-33139 - SIMATIC WinCC OA V3.16",
          "url": "https://www.winccoa.com/downloads/detail/security-guideline-wincc-oa-v316-1.html"
        },
        {
          "summary": "CVE-2022-33139 - SIMATIC WinCC OA V3.17",
          "url": "https://www.winccoa.com/downloads/detail/security-guideline-wincc-oa-v317.html"
        },
        {
          "summary": "CVE-2022-33139 - SIMATIC WinCC OA V3.18",
          "url": "https://www.winccoa.com/downloads/detail/security-guideline-wincc-oa-v318.html"
        },
        {
          "summary": "CVE-2022-33139 Mitre 5.0 json",
          "url": "https://cert-portal.siemens.com/productcert/mitre/CVE-2022-33139.json"
        },
        {
          "category": "external",
          "summary": "web.nvd.nist.gov",
          "url": "http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2022-33139"
        },
        {
          "category": "external",
          "summary": "www.first.org",
          "url": "https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "Enable server-side authentication (SSA) or Kerberos authentication for your WinCC OA project",
          "product_ids": [
            "CSAFPID-0001"
          ],
          "url": "https://www.winccoa.com/downloads/detail/security-guideline-wincc-oa-v316-1.html"
        },
        {
          "category": "vendor_fix",
          "details": "Ensure that server-side authentication (SSA) is enabled for your WinCC OA project (which is the default configuration); alternatively enable Kerberos authentication",
          "product_ids": [
            "CSAFPID-0002"
          ],
          "url": "https://www.winccoa.com/downloads/detail/security-guideline-wincc-oa-v317.html"
        },
        {
          "category": "vendor_fix",
          "details": "Ensure that server-side authentication (SSA) is enabled for your WinCC OA project (which is the default configuration); alternatively enable Kerberos authentication",
          "product_ids": [
            "CSAFPID-0003"
          ],
          "url": "https://www.winccoa.com/downloads/detail/security-guideline-wincc-oa-v318.html"
        },
        {
          "category": "mitigation",
          "details": "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: https://www.siemens.com/cert/operational-guidelines-industrial-security), and to follow the recommendations in the product manuals.\n\nAdditional information on Industrial Security by Siemens can be found at: https://www.siemens.com/industrialsecurity",
          "product_ids": [
            "CSAFPID-0001",
            "CSAFPID-0002",
            "CSAFPID-0003"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-0001",
            "CSAFPID-0002",
            "CSAFPID-0003"
          ]
        }
      ],
      "title": "CVE-2022-33139"
    }
  ]
}