{
  "document": {
    "acknowledgments": [
      {
        "names": [
          "Peter Cheng"
        ],
        "organization": "Elex Cybersecurity, Inc.",
        "summary": "coordinating this vulnerability with Siemens"
      },
      {
        "organization": "CNCERT/CC",
        "summary": "coordinating this vulnerability with Siemens"
      }
    ],
    "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 cause the affected device to go into defect mode resulting in a denial-of-service condition.",
        "title": "Risk evaluation"
      },
      {
        "category": "other",
        "text": "Critical Manufacturing",
        "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 risk of exploitation of this vulnerability. Specifically, users should:",
        "title": "Recommended Practices"
      },
      {
        "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 onus-cert.gov. Several 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 us-cert.gov in 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 \nsolutions, please contact the Siemens ProductCERT:\n\nhttps://www.siemens.com/cert/advisories",
        "title": "Additional Resources"
      },
      {
        "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": "self",
        "summary": "ICS Advisory ICSA-20-070-02 JSON",
        "url": "https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2020/icsa-20-070-02.json"
      },
      {
        "category": "self",
        "summary": "ICS Advisory ICSA-20-070-02 Web Version",
        "url": "https://www.cisa.gov/news-events/ics-advisories/icsa-20-070-02"
      },
      {
        "category": "external",
        "summary": "Recommended Practices",
        "url": "https://www.us-cert.gov/ics/alerts/ICS-ALERT-10-301-01"
      },
      {
        "category": "external",
        "summary": "Recommended Practices",
        "url": "https://www.us-cert.gov/sites/default/files/recommended_practices/NCCIC_ICS-CERT_Defense_in_Depth_2016_S508C.pdf"
      },
      {
        "category": "external",
        "summary": "Recommended Practices",
        "url": "https://www.us-cert.gov/ics/tips/ICS-TIP-12-146-01B"
      },
      {
        "category": "external",
        "summary": "SSA-496604: SSA-508982: Denial-of-Service Vulnerability in SIMATIC S7-300 CPUs, SIMATIC TDC, and SINUMERIK Controller over Profinet - TXT Version",
        "url": "https://cert-portal.siemens.com/productcert/txt/SSA-508982.txt"
      }
    ],
    "title": "Siemens SIMATIC S7-300 CPUs and SINUMERIK Controller over Profinet (Update A)",
    "tracking": {
      "current_release_date": "2020-07-14T00:00:00.000000Z",
      "generator": {
        "engine": {
          "name": "CISA CSAF Generator",
          "version": "1.0.0"
        }
      },
      "id": "ICSA-20-070-02",
      "initial_release_date": "2020-03-10T00:00:00.000000Z",
      "revision_history": [
        {
          "date": "2020-03-10T00:00:00.000000Z",
          "legacy_version": "Initial",
          "number": "1",
          "summary": "ICSA-20-070-02 Siemens SIMATIC S7-300 and SINUMERIK Controller"
        },
        {
          "date": "2020-07-14T00:00:00.000000Z",
          "legacy_version": "A",
          "number": "2",
          "summary": "ICSA-20-070-02 SIMATIC S7-300 CPUs and SINUMERIK Controller over Profinet (Update A)"
        }
      ],
      "status": "final",
      "version": "2"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "All versions \u003c V3.X.17",
                "product": {
                  "name": "SIMATIC S7-300 CPU family (incl.\u00a0related ET200 CPUs and SIPLUS variants): All versions \u003c V3.X.17",
                  "product_id": "CSAFPID-0001"
                }
              }
            ],
            "category": "product_name",
            "name": "SIMATIC S7-300 CPU family (incl.\u00a0related ET200 CPUs and SIPLUS variants)"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "All versions \u003c V1.1.8",
                "product": {
                  "name": "SIMATIC TDC CP51M1: All versions \u003c V1.1.8",
                  "product_id": "CSAFPID-0002"
                }
              }
            ],
            "category": "product_name",
            "name": "SIMATIC TDC CP51M1"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "All versions \u003c V1.1.1",
                "product": {
                  "name": "SIMATIC TDC CPU555: All versions \u003c V1.1.1",
                  "product_id": "CSAFPID-0003"
                }
              }
            ],
            "category": "product_name",
            "name": "SIMATIC TDC CPU555"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "All versions \u003c V4.8.6",
                "product": {
                  "name": "SINUMERIK 840D sl: All versions \u003c V4.8.6",
                  "product_id": "CSAFPID-0004"
                }
              }
            ],
            "category": "product_name",
            "name": "SINUMERIK 840D sl"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "All versions \u003c V4.94",
                "product": {
                  "name": "SINUMERIK 840D sl: All versions \u003c V4.94",
                  "product_id": "CSAFPID-0005"
                }
              }
            ],
            "category": "product_name",
            "name": "SINUMERIK 840D sl"
          }
        ],
        "category": "vendor",
        "name": "Siemens"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2019-18336",
      "cwe": {
        "id": "CWE-400",
        "name": "Uncontrolled Resource Consumption"
      },
      "notes": [
        {
          "category": "summary",
          "text": "Specially crafted packets sent to port 102/tcp (Profinet) could cause the affected device to go into defect mode. A restart is required in order to recover the system.",
          "title": "Summary"
        },
        {
          "category": "summary",
          "text": "Successful exploitation requires an attacker to have network access to port 102/tcp, with no authentication. No user interation is required.",
          "title": "Summary"
        },
        {
          "category": "summary",
          "text": "At the time of advisory publication no public exploitation of this security vulnerability was known.",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-0001",
          "CSAFPID-0002",
          "CSAFPID-0003",
          "CSAFPID-0004",
          "CSAFPID-0005"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "web.nvd.nist.gov",
          "url": "http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2019-18336"
        },
        {
          "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:N/I:N/A:H"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "Make sure that access to port 102/tcp is restricted e.g.\u00a0with an\nexternal firewall.",
          "product_ids": [
            "CSAFPID-0001",
            "CSAFPID-0002",
            "CSAFPID-0003",
            "CSAFPID-0004",
            "CSAFPID-0005"
          ]
        },
        {
          "category": "vendor_fix",
          "details": "Update to V3.X.17 - Download: https://support.industry.siemens.com/cs/ww/en/ps/13752/dl ",
          "product_ids": [
            "CSAFPID-0001"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/ps/13752/dl"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V1.1.8 - Download: https://support.industry.siemens.com/cs/ww/en/view/27049282 ",
          "product_ids": [
            "CSAFPID-0002"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/27049282"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V1.1.1 - Download: https://support.industry.siemens.com/cs/ww/en/view/109740119 ",
          "product_ids": [
            "CSAFPID-0003"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109740119"
        },
        {
          "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. Additional information on Industrial Security by Siemens can be found at: https://www.siemens.com/industrialsecurity",
          "product_ids": [
            "CSAFPID-0001",
            "CSAFPID-0002",
            "CSAFPID-0003",
            "CSAFPID-0004",
            "CSAFPID-0005"
          ]
        }
      ],
      "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:W/RC:C",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-0001",
            "CSAFPID-0002",
            "CSAFPID-0003",
            "CSAFPID-0004",
            "CSAFPID-0005"
          ]
        }
      ]
    }
  ]
}