ssa-316383
Vulnerability from csaf_siemens
Published
2021-09-14 00:00
Modified
2022-02-08 00:00
Summary
SSA-316383: NumberJack Vulnerability in LOGO! CMR and SIMATIC RTU 3000 devices

Notes

Summary
A vulnerability has been identified in the underlying TCP/IP stack of LOGO! CMR and SIMATIC RTU 3000 devices. It could allow an attacker with network access to the LAN interface of an affected device to hijack an ongoing connection or spoof a new one. The WAN interface, however, is not affected. Siemens has released updates for the affected products and recommends to update to the latest versions.
General Recommendations
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. Additional information on Industrial Security by Siemens can be found at: https://www.siemens.com/industrialsecurity
Additional Resources
For further inquiries on security vulnerabilities in Siemens products and solutions, please contact the Siemens ProductCERT: https://www.siemens.com/cert/advisories
Terms of Use
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.


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{
  "document": {
    "category": "Siemens Security Advisory",
    "csaf_version": "2.0",
    "distribution": {
      "text": "Disclosure is not limited.",
      "tlp": {
        "label": "WHITE"
      }
    },
    "notes": [
      {
        "category": "summary",
        "text": "A vulnerability has been identified in the underlying TCP/IP stack of LOGO! CMR and SIMATIC RTU 3000 devices. It could allow an attacker with network access to the LAN interface of an affected device to hijack an ongoing connection or spoof a new one. The WAN interface, however, is not affected.\n\nSiemens has released updates for the affected products and recommends to update to the latest versions.",
        "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: 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": "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-316383: NumberJack Vulnerability in LOGO! CMR and SIMATIC RTU 3000 devices - PDF Version",
        "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-316383.pdf"
      },
      {
        "category": "self",
        "summary": "SSA-316383: NumberJack Vulnerability in LOGO! CMR and SIMATIC RTU 3000 devices - TXT Version",
        "url": "https://cert-portal.siemens.com/productcert/txt/ssa-316383.txt"
      },
      {
        "category": "self",
        "summary": "SSA-316383: NumberJack Vulnerability in LOGO! CMR and SIMATIC RTU 3000 devices - CSAF Version",
        "url": "https://cert-portal.siemens.com/productcert/csaf/ssa-316383.json"
      }
    ],
    "title": "SSA-316383: NumberJack Vulnerability in LOGO! CMR and SIMATIC RTU 3000 devices",
    "tracking": {
      "current_release_date": "2022-02-08T00:00:00Z",
      "generator": {
        "engine": {
          "name": "Siemens ProductCERT CSAF Generator",
          "version": "1"
        }
      },
      "id": "SSA-316383",
      "initial_release_date": "2021-09-14T00:00:00Z",
      "revision_history": [
        {
          "date": "2021-09-14T00:00:00Z",
          "legacy_version": "1.0",
          "number": "1",
          "summary": "Publication Date"
        },
        {
          "date": "2022-02-08T00:00:00Z",
          "legacy_version": "1.1",
          "number": "2",
          "summary": "Expanded SIMATIC RTU 3000 family to specific individual affected products and added remediation for all the entries"
        }
      ],
      "status": "final",
      "version": "2"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c V2.2",
                "product": {
                  "name": "LOGO! CMR2020 (6GK7142-7BX00-0AX0)",
                  "product_id": "1",
                  "product_identification_helper": {
                    "model_numbers": [
                      "6GK7142-7BX00-0AX0"
                    ]
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "LOGO! CMR2020"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c V2.2",
                "product": {
                  "name": "LOGO! CMR2040 (6GK7142-7EX00-0AX0)",
                  "product_id": "2",
                  "product_identification_helper": {
                    "model_numbers": [
                      "6GK7142-7EX00-0AX0"
                    ]
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "LOGO! CMR2040"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c V4.0.9",
                "product": {
                  "name": "SIMATIC RTU3010C (6NH3112-0BA00-0XX0)",
                  "product_id": "3",
                  "product_identification_helper": {
                    "model_numbers": [
                      "6NH3112-0BA00-0XX0"
                    ]
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "SIMATIC RTU3010C"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c V4.0.9",
                "product": {
                  "name": "SIMATIC RTU3030C (6NH3112-3BA00-0XX0)",
                  "product_id": "4",
                  "product_identification_helper": {
                    "model_numbers": [
                      "6NH3112-3BA00-0XX0"
                    ]
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "SIMATIC RTU3030C"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c V4.0.9",
                "product": {
                  "name": "SIMATIC RTU3031C (6NH3112-3BB00-0XX0)",
                  "product_id": "5",
                  "product_identification_helper": {
                    "model_numbers": [
                      "6NH3112-3BB00-0XX0"
                    ]
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "SIMATIC RTU3031C"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c V4.0.9",
                "product": {
                  "name": "SIMATIC RTU3041C (6NH3112-4BB00-0XX0)",
                  "product_id": "6",
                  "product_identification_helper": {
                    "model_numbers": [
                      "6NH3112-4BB00-0XX0"
                    ]
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "SIMATIC RTU3041C"
          }
        ],
        "category": "vendor",
        "name": "Siemens"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2021-37186",
      "cwe": {
        "id": "CWE-330",
        "name": "Use of Insufficiently Random Values"
      },
      "notes": [
        {
          "category": "summary",
          "text": "The underlying TCP/IP stack does not properly calculate the random numbers used as ISN (Initial Sequence Numbers). An adjacent attacker with network access to the LAN interface could interfere with traffic, spoof the connection and gain access to sensitive information.",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "1",
          "2",
          "3",
          "4",
          "5",
          "6"
        ]
      },
      "references": [
        {
          "summary": "CVE-2021-37186 - LOGO! CMR2020",
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109800267/"
        },
        {
          "summary": "CVE-2021-37186 - LOGO! CMR2040",
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109800267/"
        },
        {
          "summary": "CVE-2021-37186 - SIMATIC RTU3010C",
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109802779/"
        },
        {
          "summary": "CVE-2021-37186 - SIMATIC RTU3030C",
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109802779/"
        },
        {
          "summary": "CVE-2021-37186 - SIMATIC RTU3031C",
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109802779/"
        },
        {
          "summary": "CVE-2021-37186 - SIMATIC RTU3041C",
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109802779/"
        },
        {
          "summary": "CVE-2021-37186 Mitre 5.0 json",
          "url": "https://cert-portal.siemens.com/productcert/mitre/CVE-2021-37186.json"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "Update to V2.2 or later version",
          "product_ids": [
            "1",
            "2"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109800267/"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V4.0.9 or later version",
          "product_ids": [
            "3",
            "4",
            "5",
            "6"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109802779/"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 5.4,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C",
            "version": "3.1"
          },
          "products": [
            "1",
            "2",
            "3",
            "4",
            "5",
            "6"
          ]
        }
      ],
      "title": "CVE-2021-37186"
    }
  ]
}


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