icsa-21-194-04
Vulnerability from csaf_cisa
Published
2021-07-13 00:00
Modified
2021-07-13 00:00
Summary
Siemens SINUMERIK Integrate Operate Client

Notes

CISA Disclaimer
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
Legal Notice
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/.
Risk evaluation
Successful exploitation of this vulnerability could allow an attacker to spoof any SSL server certificate and conduct man-in-the-middle attacks.
Critical infrastructure sectors
Multiple
Countries/areas deployed
Worldwide
Company headquarters location
Germany
Recommended Practices
CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability. Specifically, users should:
Recommended Practices
CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures. CISA also provides a section for control systems security recommended practices on the ICS webpage onus-cert.cisa.gov. Several recommended practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.
Recommended Practices
Additional mitigation guidance and recommended practices are publicly available on the ICS webpage on us-cert.cisa.gov in the Technical Information Paper, ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation Strategies. Organizations observing any suspected malicious activity should follow their established internal procedures and report their findings to CISA for tracking and correlation against other incidents.
Additional Resources
For further inquiries on security vulnerabilities in Siemens products and solutions, please contact the Siemens ProductCERT: https://www.siemens.com/cert/advisories
Exploitability
No known public exploits specifically target this vulnerability. This vulnerability has a high attack complexity.


To clipboard 

{
  "document": {
    "acknowledgments": [
      {
        "organization": "Siemens",
        "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 spoof any SSL server certificate and conduct man-in-the-middle attacks.",
        "title": "Risk evaluation"
      },
      {
        "category": "other",
        "text": "Multiple",
        "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.cisa.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.cisa.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 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. This vulnerability has a high attack complexity.",
        "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-729965: TLS Certificate Validation Vulnerability in SINUMERIK Integrate Operate Client - CSAF Version",
        "url": "https://cert-portal.siemens.com/productcert/csaf/ssa-729965.json"
      },
      {
        "category": "self",
        "summary": "ICS Advisory ICSA-21-194-04 JSON",
        "url": "https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2021/icsa-21-194-04.json"
      },
      {
        "category": "self",
        "summary": "ICS Advisory ICSA-21-194-04 Web Version",
        "url": "https://www.cisa.gov/news-events/ics-advisories/icsa-21-194-04"
      },
      {
        "category": "external",
        "summary": "Recommended Practices",
        "url": "https://us-cert.cisa.gov/ics/alerts/ICS-ALERT-10-301-01"
      },
      {
        "category": "external",
        "summary": "Recommended Practices",
        "url": "https://us-cert.cisa.gov/sites/default/files/recommended_practices/NCCIC_ICS-CERT_Defense_in_Depth_2016_S508C.pdf"
      },
      {
        "category": "external",
        "summary": "Recommended Practices",
        "url": "https://us-cert.cisa.gov/ics/tips/ICS-TIP-12-146-01B"
      },
      {
        "category": "external",
        "summary": "SSA-729965: TLS Certificate Validation Vulnerability in SINUMERIK Integrate Operate Client - PDF Version",
        "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-729965.pdf"
      },
      {
        "category": "external",
        "summary": "SSA-729965: TLS Certificate Validation Vulnerability in SINUMERIK Integrate Operate Client - TXT Version",
        "url": "https://cert-portal.siemens.com/productcert/txt/ssa-729965.txt"
      }
    ],
    "title": "Siemens SINUMERIK Integrate Operate Client",
    "tracking": {
      "current_release_date": "2021-07-13T00:00:00.000000Z",
      "generator": {
        "engine": {
          "name": "CISA CSAF Generator",
          "version": "1.0.0"
        }
      },
      "id": "ICSA-21-194-04",
      "initial_release_date": "2021-07-13T00:00:00.000000Z",
      "revision_history": [
        {
          "date": "2021-07-13T00:00:00.000000Z",
          "legacy_version": "Initial",
          "number": "1",
          "summary": "ICSA-21-194-04 Siemens SINUMERIK Integrate Operate Client"
        }
      ],
      "status": "final",
      "version": "1"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:all/*",
                "product": {
                  "name": "SINUMERIK Analyse MyCondition",
                  "product_id": "CSAFPID-0001"
                }
              }
            ],
            "category": "product_name",
            "name": "SINUMERIK Analyse MyCondition"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:all/*",
                "product": {
                  "name": "SINUMERIK Analyze MyPerformance",
                  "product_id": "CSAFPID-0002"
                }
              }
            ],
            "category": "product_name",
            "name": "SINUMERIK Analyze MyPerformance"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:all/*",
                "product": {
                  "name": "SINUMERIK Analyze MyPerformance /OEE-Monitor",
                  "product_id": "CSAFPID-0003"
                }
              }
            ],
            "category": "product_name",
            "name": "SINUMERIK Analyze MyPerformance /OEE-Monitor"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:all/*",
                "product": {
                  "name": "SINUMERIK Analyze MyPerformance /OEE-Tuning",
                  "product_id": "CSAFPID-0004"
                }
              }
            ],
            "category": "product_name",
            "name": "SINUMERIK Analyze MyPerformance /OEE-Tuning"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003e= V02.00.12 \u003c 02.00.18",
                "product": {
                  "name": "SINUMERIK Integrate Client 02",
                  "product_id": "CSAFPID-0005"
                }
              }
            ],
            "category": "product_name",
            "name": "SINUMERIK Integrate Client 02"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003e= V03.00.12 \u003c 03.00.18",
                "product": {
                  "name": "SINUMERIK Integrate Client 03",
                  "product_id": "CSAFPID-0006"
                }
              }
            ],
            "category": "product_name",
            "name": "SINUMERIK Integrate Client 03"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "V04.00.02 and all versions \u003e= V04.00.15 \u003c 04.00.18",
                "product": {
                  "name": "SINUMERIK Integrate Client 04",
                  "product_id": "CSAFPID-0007"
                }
              }
            ],
            "category": "product_name",
            "name": "SINUMERIK Integrate Client 04"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c V4.1 SP10 HF3",
                "product": {
                  "name": "SINUMERIK Integrate for Production 4.1",
                  "product_id": "CSAFPID-0008"
                }
              }
            ],
            "category": "product_name",
            "name": "SINUMERIK Integrate for Production 4.1"
          },
          {
            "branches": [
              {
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                }
              }
            ],
            "category": "product_name",
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          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:all/*",
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                  "product_id": "CSAFPID-00010"
                }
              }
            ],
            "category": "product_name",
            "name": "SINUMERIK Manage MyMachines"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:all/*",
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                  "name": "SINUMERIK Manage MyMachines /Remote",
                  "product_id": "CSAFPID-00011"
                }
              }
            ],
            "category": "product_name",
            "name": "SINUMERIK Manage MyMachines /Remote"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:all/*",
                "product": {
                  "name": "SINUMERIK Manage MyMachines /Spindel Monitor",
                  "product_id": "CSAFPID-00012"
                }
              }
            ],
            "category": "product_name",
            "name": "SINUMERIK Manage MyMachines /Spindel Monitor"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:all/*",
                "product": {
                  "name": "SINUMERIK Manage MyPrograms",
                  "product_id": "CSAFPID-00013"
                }
              }
            ],
            "category": "product_name",
            "name": "SINUMERIK Manage MyPrograms"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:all/*",
                "product": {
                  "name": "SINUMERIK Manage MyResources /Programs",
                  "product_id": "CSAFPID-00014"
                }
              }
            ],
            "category": "product_name",
            "name": "SINUMERIK Manage MyResources /Programs"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:all/*",
                "product": {
                  "name": "SINUMERIK Manage MyResources /Tools",
                  "product_id": "CSAFPID-00015"
                }
              }
            ],
            "category": "product_name",
            "name": "SINUMERIK Manage MyResources /Tools"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:all/*",
                "product": {
                  "name": "SINUMERIK Manage MyTools",
                  "product_id": "CSAFPID-00016"
                }
              }
            ],
            "category": "product_name",
            "name": "SINUMERIK Manage MyTools"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c V4.8 SP8",
                "product": {
                  "name": "SINUMERIK Operate V4.8",
                  "product_id": "CSAFPID-00017"
                }
              }
            ],
            "category": "product_name",
            "name": "SINUMERIK Operate V4.8"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c V4.93 HF7",
                "product": {
                  "name": "SINUMERIK Operate V4.93",
                  "product_id": "CSAFPID-00018"
                }
              }
            ],
            "category": "product_name",
            "name": "SINUMERIK Operate V4.93"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c V4.94 HF5",
                "product": {
                  "name": "SINUMERIK Operate V4.94",
                  "product_id": "CSAFPID-00019"
                }
              }
            ],
            "category": "product_name",
            "name": "SINUMERIK Operate V4.94"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:all/*",
                "product": {
                  "name": "SINUMERIK Optimize MyProgramming /NX-Cam Editor",
                  "product_id": "CSAFPID-00020"
                }
              }
            ],
            "category": "product_name",
            "name": "SINUMERIK Optimize MyProgramming /NX-Cam Editor"
          }
        ],
        "category": "vendor",
        "name": "Siemens"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2021-31892",
      "cwe": {
        "id": "CWE-295",
        "name": "Improper Certificate Validation"
      },
      "notes": [
        {
          "category": "summary",
          "text": "Due to an error in a third-party dependency the ssl flags used for setting up a TLS connection to a server are overwitten with wrong settings. This results in a missing validation of the server certificate and thus in a possible TLS MITM szenario.",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-0001",
          "CSAFPID-0002",
          "CSAFPID-0003",
          "CSAFPID-0004",
          "CSAFPID-0005",
          "CSAFPID-0006",
          "CSAFPID-0007",
          "CSAFPID-0008",
          "CSAFPID-0009",
          "CSAFPID-00010",
          "CSAFPID-00011",
          "CSAFPID-00012",
          "CSAFPID-00013",
          "CSAFPID-00014",
          "CSAFPID-00015",
          "CSAFPID-00016",
          "CSAFPID-00017",
          "CSAFPID-00018",
          "CSAFPID-00019",
          "CSAFPID-00020"
        ]
      },
      "references": [
        {
          "summary": "CVE-2021-31892 Mitre 5.0 json",
          "url": "https://cert-portal.siemens.com/productcert/mitre/CVE-2021-31892.json"
        },
        {
          "category": "external",
          "summary": "web.nvd.nist.gov",
          "url": "http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2021-31892"
        },
        {
          "category": "external",
          "summary": "www.first.org",
          "url": "https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "Update SINUMERIK Integrate Client",
          "product_ids": [
            "CSAFPID-0001",
            "CSAFPID-0002",
            "CSAFPID-0003",
            "CSAFPID-0004",
            "CSAFPID-0008",
            "CSAFPID-0009",
            "CSAFPID-00010",
            "CSAFPID-00011",
            "CSAFPID-00012",
            "CSAFPID-00013",
            "CSAFPID-00014",
            "CSAFPID-00015",
            "CSAFPID-00016",
            "CSAFPID-00020"
          ]
        },
        {
          "category": "vendor_fix",
          "details": "Update to V02.00.18",
          "product_ids": [
            "CSAFPID-0005"
          ]
        },
        {
          "category": "vendor_fix",
          "details": "Update to V03.00.18",
          "product_ids": [
            "CSAFPID-0006"
          ]
        },
        {
          "category": "vendor_fix",
          "details": "Update to V04.00.18",
          "product_ids": [
            "CSAFPID-0007"
          ]
        },
        {
          "category": "vendor_fix",
          "details": "Update SINUMERIK Operate to V4.8 SP8 or update included SINUMERIK Integrate Client",
          "product_ids": [
            "CSAFPID-00017"
          ]
        },
        {
          "category": "vendor_fix",
          "details": "Update SINUMERIK Operate to V4.93 HF7 or update included SINUMERIK Integrate Client",
          "product_ids": [
            "CSAFPID-00018"
          ]
        },
        {
          "category": "vendor_fix",
          "details": "Update SINUMERIK Operate to V4.94 HF5 or update included SINUMERIK Integrate Client",
          "product_ids": [
            "CSAFPID-00019"
          ]
        },
        {
          "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",
            "CSAFPID-0004",
            "CSAFPID-0005",
            "CSAFPID-0006",
            "CSAFPID-0007",
            "CSAFPID-0008",
            "CSAFPID-0009",
            "CSAFPID-00010",
            "CSAFPID-00011",
            "CSAFPID-00012",
            "CSAFPID-00013",
            "CSAFPID-00014",
            "CSAFPID-00015",
            "CSAFPID-00016",
            "CSAFPID-00017",
            "CSAFPID-00018",
            "CSAFPID-00019",
            "CSAFPID-00020"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 7.4,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N/E:P/RL:O/RC:C",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-0001",
            "CSAFPID-0002",
            "CSAFPID-0003",
            "CSAFPID-0004",
            "CSAFPID-0005",
            "CSAFPID-0006",
            "CSAFPID-0007",
            "CSAFPID-0008",
            "CSAFPID-0009",
            "CSAFPID-00010",
            "CSAFPID-00011",
            "CSAFPID-00012",
            "CSAFPID-00013",
            "CSAFPID-00014",
            "CSAFPID-00015",
            "CSAFPID-00016",
            "CSAFPID-00017",
            "CSAFPID-00018",
            "CSAFPID-00019",
            "CSAFPID-00020"
          ]
        }
      ],
      "title": "CVE-2021-31892"
    }
  ]
}


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