{
  "document": {
    "title": "SSA-789208: Multiple Vulnerabilities (INFRA:HALT) in Interniche IP-Stack based Low Voltage Devices",
    "category": "Siemens Security Advisory",
    "csaf_version": "2.0",
    "publisher": {
      "name": "Siemens ProductCERT",
      "contact_details": "productcert@siemens.com",
      "category": "vendor",
      "namespace": "https://www.siemens.com"
    },
    "distribution": {
      "text": "Disclosure is not limited.",
      "tlp": {
        "label": "WHITE"
      }
    },
    "tracking": {
      "id": "SSA-789208",
      "status": "final",
      "version": "3",
      "revision_history": [
        {
          "number": "1",
          "legacy_version": "1.0",
          "date": "2021-08-04T00:00:00Z",
          "summary": "Publication Date"
        },
        {
          "number": "2",
          "legacy_version": "1.1",
          "date": "2021-09-14T00:00:00Z",
          "summary": "Split SENTRON 7KM PAC Switched Ethernet PROFINET Expansion Module into three products (MLFBs); updated link to solution for SENTRON 3WA COM190"
        },
        {
          "number": "3",
          "legacy_version": "1.2",
          "date": "2022-01-11T00:00:00Z",
          "summary": "Added solution for SENTRON 7KM PAC Switched Ethernet PROFINET Expansion Module (7KM9300-0AE01-0AA0)"
        }
      ],
      "initial_release_date": "2021-08-04T00:00:00Z",
      "current_release_date": "2022-01-11T00:00:00Z",
      "generator": {
        "engine": {
          "name": "Siemens ProductCERT CSAF Generator",
          "version": "1"
        }
      }
    },
    "notes": [
      {
        "title": "Summary",
        "category": "summary",
        "text": "Security researchers discovered and disclosed 14 vulnerabilities in the Interniche IP stack, also known as \"INFRA:HALT\" vulnerabilities [0]. This advisory describes the impact to Siemens low voltage products, which are only affected by four out of the 14 vulnerabilities.\n\nSiemens has released updates for several affected products and recommends to update to the latest versions. Siemens recommends specific countermeasures for products where updates are not, or not yet available.\n\n[0] https://www.forescout.com/blog/new-critical-operational-technology-vulnerabilities-found-on-nichestack/"
      },
      {
        "title": "General Recommendations",
        "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' 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"
      },
      {
        "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": "Terms of Use",
        "category": "legal_disclaimer",
        "text": "Siemens Security Advisories are subject to the terms and conditions contained in Siemens' 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' 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."
      }
    ],
    "references": [
      {
        "category": "self",
        "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-789208.pdf",
        "summary": "SSA-789208: Multiple Vulnerabilities (INFRA:HALT) in Interniche IP-Stack based Low Voltage Devices - PDF Version"
      },
      {
        "category": "self",
        "url": "https://cert-portal.siemens.com/productcert/txt/ssa-789208.txt",
        "summary": "SSA-789208: Multiple Vulnerabilities (INFRA:HALT) in Interniche IP-Stack based Low Voltage Devices - TXT Version"
      },
      {
        "category": "self",
        "url": "https://cert-portal.siemens.com/productcert/csaf/ssa-789208.json",
        "summary": "SSA-789208: Multiple Vulnerabilities (INFRA:HALT) in Interniche IP-Stack based Low Voltage Devices - CSAF Version"
      }
    ],
    "acknowledgments": [
      {
        "organization": "Bundesamt für Sicherheit in der Informationstechnik (BSI)",
        "summary": "coordination efforts"
      },
      {
        "organization": "CERT Coordination Center (CERT/CC)",
        "summary": "coordination efforts"
      },
      {
        "names": [
          "Daniel dos Santos",
          "Jos Wetzels",
          "Amine Amri"
        ],
        "organization": "Forescout Technologies",
        "summary": "coordinated disclosure"
      },
      {
        "names": [
          "Asaf Karas",
          "Shachar Menashe"
        ],
        "organization": "Vdoo",
        "summary": "coordinated disclosure"
      },
      {
        "organization": "HCC Embedded",
        "summary": "coordination efforts"
      }
    ]
  },
  "product_tree": {
    "branches": [
      {
        "name": "Siemens",
        "category": "vendor",
        "branches": [
          {
            "name": "SENTRON 3WA COM190",
            "category": "product_name",
            "branches": [
              {
                "name": "< V2.0.0",
                "category": "product_version_range",
                "product": {
                  "product_id": "1",
                  "name": "SENTRON 3WA COM190"
                }
              }
            ]
          },
          {
            "name": "SENTRON 3WL COM35",
            "category": "product_name",
            "branches": [
              {
                "name": "< V1.2.0",
                "category": "product_version_range",
                "product": {
                  "product_id": "2",
                  "name": "SENTRON 3WL COM35"
                }
              }
            ]
          },
          {
            "name": "SENTRON 7KM PAC Switched Ethernet PROFINET Expansion Module",
            "category": "product_name",
            "branches": [
              {
                "name": "vers:all/*",
                "category": "product_version_range",
                "product": {
                  "product_id": "3",
                  "name": "SENTRON 7KM PAC Switched Ethernet PROFINET Expansion Module (7KM9300-0AE00-0AA0)",
                  "product_identification_helper": {
                    "model_numbers": [
                      "7KM9300-0AE00-0AA0"
                    ]
                  }
                }
              }
            ]
          },
          {
            "name": "SENTRON 7KM PAC Switched Ethernet PROFINET Expansion Module",
            "category": "product_name",
            "branches": [
              {
                "name": "< V2.1.6",
                "category": "product_version_range",
                "product": {
                  "product_id": "4",
                  "name": "SENTRON 7KM PAC Switched Ethernet PROFINET Expansion Module (7KM9300-0AE01-0AA0)",
                  "product_identification_helper": {
                    "model_numbers": [
                      "7KM9300-0AE01-0AA0"
                    ]
                  }
                }
              }
            ]
          },
          {
            "name": "SENTRON 7KM PAC Switched Ethernet PROFINET Expansion Module",
            "category": "product_name",
            "branches": [
              {
                "name": "< V3.0.4",
                "category": "product_version_range",
                "product": {
                  "product_id": "5",
                  "name": "SENTRON 7KM PAC Switched Ethernet PROFINET Expansion Module (7KM9300-0AE02-0AA0)",
                  "product_identification_helper": {
                    "model_numbers": [
                      "7KM9300-0AE02-0AA0"
                    ]
                  }
                }
              }
            ]
          }
        ]
      }
    ]
  },
  "vulnerabilities": [
    {
      "title": "CVE-2020-35683",
      "notes": [
        {
          "title": "Summary",
          "category": "summary",
          "text": "The code that parses ICMP packets relies on an unchecked value of the IP payload size (extracted from the IP header) to compute the ICMP checksum. When the IP payload size is set to be smaller than the size of the IP header, the ICMP checksum computation function may read out of bounds."
        }
      ],
      "cve": "CVE-2020-35683",
      "cwe": {
        "id": "CWE-20",
        "name": "Improper Input Validation"
      },
      "product_status": {
        "known_affected": [
          "3",
          "4",
          "5"
        ]
      },
      "scores": [
        {
          "cvss_v3": {
            "version": "3.1",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N/E:P/RL:O/RC:C"
          },
          "products": [
            "3",
            "4",
            "5"
          ]
        }
      ],
      "remediations": [
        {
          "product_ids": [
            "3"
          ],
          "category": "no_fix_planned",
          "details": "Currently no remediation is planned"
        },
        {
          "product_ids": [
            "4"
          ],
          "category": "vendor_fix",
          "details": "Update to V2.1.6 or later version",
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109749555/"
        },
        {
          "product_ids": [
            "5"
          ],
          "category": "vendor_fix",
          "details": "Update to V3.0.4 or later version",
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109777120/"
        }
      ],
      "references": [
        {
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109749555/",
          "summary": "CVE-2020-35683 - SENTRON 7KM PAC Switched Ethernet PROFINET Expansion Module"
        },
        {
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109777120/",
          "summary": "CVE-2020-35683 - SENTRON 7KM PAC Switched Ethernet PROFINET Expansion Module"
        },
        {
          "url": "https://cert-portal.siemens.com/productcert/mitre/CVE-2020-35683.json",
          "summary": "CVE-2020-35683 Mitre 5.0 json"
        }
      ]
    },
    {
      "title": "CVE-2020-35684",
      "notes": [
        {
          "title": "Summary",
          "category": "summary",
          "text": "The code that parses TCP packets relies on an unchecked value of the IP payload size (extracted from the IP header) to compute the length of the TCP payload within the TCP checksum computation function. When the IP payload size is set to be smaller than the size of the IP header, the TCP checksum computation function may read out of bounds. A low-impact write-out-of-bounds is also possible."
        }
      ],
      "cve": "CVE-2020-35684",
      "cwe": {
        "id": "CWE-20",
        "name": "Improper Input Validation"
      },
      "product_status": {
        "known_affected": [
          "1",
          "2",
          "3",
          "4",
          "5"
        ]
      },
      "scores": [
        {
          "cvss_v3": {
            "version": "3.1",
            "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"
          },
          "products": [
            "1",
            "2",
            "3",
            "4",
            "5"
          ]
        }
      ],
      "remediations": [
        {
          "product_ids": [
            "1"
          ],
          "category": "vendor_fix",
          "details": "Update to V2.0.0 or later version",
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109782123/"
        },
        {
          "product_ids": [
            "2"
          ],
          "category": "vendor_fix",
          "details": "Update to V1.2.0 or later version",
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109766651/"
        },
        {
          "product_ids": [
            "3"
          ],
          "category": "no_fix_planned",
          "details": "Currently no remediation is planned"
        },
        {
          "product_ids": [
            "4"
          ],
          "category": "vendor_fix",
          "details": "Update to V2.1.6 or later version",
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109749555/"
        },
        {
          "product_ids": [
            "5"
          ],
          "category": "vendor_fix",
          "details": "Update to V3.0.4 or later version",
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109777120/"
        }
      ],
      "references": [
        {
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109782123/",
          "summary": "CVE-2020-35684 - SENTRON 3WA COM190"
        },
        {
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109766651/",
          "summary": "CVE-2020-35684 - SENTRON 3WL COM35"
        },
        {
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109749555/",
          "summary": "CVE-2020-35684 - SENTRON 7KM PAC Switched Ethernet PROFINET Expansion Module"
        },
        {
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109777120/",
          "summary": "CVE-2020-35684 - SENTRON 7KM PAC Switched Ethernet PROFINET Expansion Module"
        },
        {
          "url": "https://cert-portal.siemens.com/productcert/mitre/CVE-2020-35684.json",
          "summary": "CVE-2020-35684 Mitre 5.0 json"
        }
      ]
    },
    {
      "title": "CVE-2020-35685",
      "notes": [
        {
          "title": "Summary",
          "category": "summary",
          "text": "TCP ISNs are generated in a predictable manner."
        }
      ],
      "cve": "CVE-2020-35685",
      "cwe": {
        "id": "CWE-330",
        "name": "Use of Insufficiently Random Values"
      },
      "product_status": {
        "known_affected": [
          "1",
          "2",
          "3",
          "4",
          "5"
        ]
      },
      "scores": [
        {
          "cvss_v3": {
            "version": "3.1",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N/E:P/RL:O/RC:C"
          },
          "products": [
            "1",
            "2",
            "3",
            "4",
            "5"
          ]
        }
      ],
      "remediations": [
        {
          "product_ids": [
            "1"
          ],
          "category": "vendor_fix",
          "details": "Update to V2.0.0 or later version",
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109782123/"
        },
        {
          "product_ids": [
            "2"
          ],
          "category": "vendor_fix",
          "details": "Update to V1.2.0 or later version",
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109766651/"
        },
        {
          "product_ids": [
            "3"
          ],
          "category": "no_fix_planned",
          "details": "Currently no remediation is planned"
        },
        {
          "product_ids": [
            "4"
          ],
          "category": "vendor_fix",
          "details": "Update to V2.1.6 or later version",
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109749555/"
        },
        {
          "product_ids": [
            "5"
          ],
          "category": "vendor_fix",
          "details": "Update to V3.0.4 or later version",
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109777120/"
        }
      ],
      "references": [
        {
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109782123/",
          "summary": "CVE-2020-35685 - SENTRON 3WA COM190"
        },
        {
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109766651/",
          "summary": "CVE-2020-35685 - SENTRON 3WL COM35"
        },
        {
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109749555/",
          "summary": "CVE-2020-35685 - SENTRON 7KM PAC Switched Ethernet PROFINET Expansion Module"
        },
        {
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109777120/",
          "summary": "CVE-2020-35685 - SENTRON 7KM PAC Switched Ethernet PROFINET Expansion Module"
        },
        {
          "url": "https://cert-portal.siemens.com/productcert/mitre/CVE-2020-35685.json",
          "summary": "CVE-2020-35685 Mitre 5.0 json"
        }
      ]
    },
    {
      "title": "CVE-2021-31401",
      "notes": [
        {
          "title": "Summary",
          "category": "summary",
          "text": "The TCP header processing code doesn't sanitize the length of the IP length (header + data). With a crafted IP packet an integer overflow would occur whenever the length of the IP data is calculated by subtracting the length of the header from the length of the total IP packet."
        }
      ],
      "cve": "CVE-2021-31401",
      "cwe": {
        "id": "CWE-20",
        "name": "Improper Input Validation"
      },
      "product_status": {
        "known_affected": [
          "1",
          "2",
          "3",
          "4",
          "5"
        ]
      },
      "scores": [
        {
          "cvss_v3": {
            "version": "3.1",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N/E:P/RL:O/RC:C"
          },
          "products": [
            "1",
            "2",
            "3",
            "4",
            "5"
          ]
        }
      ],
      "remediations": [
        {
          "product_ids": [
            "1"
          ],
          "category": "vendor_fix",
          "details": "Update to V2.0.0 or later version",
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109782123/"
        },
        {
          "product_ids": [
            "2"
          ],
          "category": "vendor_fix",
          "details": "Update to V1.2.0 or later version",
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109766651/"
        },
        {
          "product_ids": [
            "3"
          ],
          "category": "no_fix_planned",
          "details": "Currently no remediation is planned"
        },
        {
          "product_ids": [
            "4"
          ],
          "category": "vendor_fix",
          "details": "Update to V2.1.6 or later version",
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109749555/"
        },
        {
          "product_ids": [
            "5"
          ],
          "category": "vendor_fix",
          "details": "Update to V3.0.4 or later version",
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109777120/"
        }
      ],
      "references": [
        {
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109782123/",
          "summary": "CVE-2021-31401 - SENTRON 3WA COM190"
        },
        {
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109766651/",
          "summary": "CVE-2021-31401 - SENTRON 3WL COM35"
        },
        {
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109749555/",
          "summary": "CVE-2021-31401 - SENTRON 7KM PAC Switched Ethernet PROFINET Expansion Module"
        },
        {
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109777120/",
          "summary": "CVE-2021-31401 - SENTRON 7KM PAC Switched Ethernet PROFINET Expansion Module"
        },
        {
          "url": "https://cert-portal.siemens.com/productcert/mitre/CVE-2021-31401.json",
          "summary": "CVE-2021-31401 Mitre 5.0 json"
        }
      ]
    }
  ]
}