icsa-19-036-05
Vulnerability from csaf_cisa
Published
2019-02-05 00:00
Modified
2019-02-28 00:00
Summary
Kunbus PR100088 Modbus Gateway (Update B)

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 these vulnerabilities could allow an attacker to achieve remote code execution and/or cause a denial-of-service condition.
Critical infrastructure sectors
Communications
Countries/areas deployed
Worldwide
Company headquarters location
Germany
Recommended Practices
NCCIC recommends users take defensive measures to minimize the risk of exploitation of this vulnerability. Specifically, users should:
Recommended Practices
NCCIC reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.NCCIC also provides a section for control systems security recommended practices on the ICS-CERT web page. 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-CERT website 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 NCCIC for tracking and correlation against other incidents.
Exploitability
No known public exploits specifically target these vulnerabilities.


To clipboard 

{
  "document": {
    "acknowledgments": [
      {
        "names": [
          "Nicolas Merle"
        ],
        "organization": "Applied Risk",
        "summary": "reporting these vulnerabilities to NCCIC"
      },
      {
        "organization": "NCCIC",
        "summary": "coordinating these vulnerabilities with BSI Germany"
      }
    ],
    "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 these vulnerabilities could allow an attacker to achieve remote code execution and/or cause a denial-of-service condition.",
        "title": "Risk evaluation"
      },
      {
        "category": "other",
        "text": "Communications",
        "title": "Critical infrastructure sectors"
      },
      {
        "category": "other",
        "text": "Worldwide",
        "title": "Countries/areas deployed"
      },
      {
        "category": "other",
        "text": "Germany",
        "title": "Company headquarters location"
      },
      {
        "category": "general",
        "text": "NCCIC recommends users take defensive measures to minimize the risk of exploitation of this vulnerability. Specifically, users should:",
        "title": "Recommended Practices"
      },
      {
        "category": "general",
        "text": "NCCIC reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.NCCIC also provides a section for control systems security recommended practices on the ICS-CERT web page. 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-CERT website 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 NCCIC for tracking and correlation against other incidents.",
        "title": "Recommended Practices"
      },
      {
        "category": "other",
        "text": "No known public exploits specifically target these vulnerabilities.",
        "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-19-036-05 JSON",
        "url": "https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2019/icsa-19-036-05.json"
      },
      {
        "category": "self",
        "summary": "ICS Advisory ICSA-19-036-05 Web Version",
        "url": "https://www.cisa.gov/news-events/ics-advisories/icsa-19-036-05"
      },
      {
        "category": "external",
        "summary": "Recommended Practices",
        "url": "https://www.cisa.gov/uscert/ics/alerts/ICS-ALERT-10-301-01"
      },
      {
        "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"
      }
    ],
    "title": "Kunbus PR100088 Modbus Gateway (Update B)",
    "tracking": {
      "current_release_date": "2019-02-28T00:00:00.000000Z",
      "generator": {
        "engine": {
          "name": "CISA CSAF Generator",
          "version": "1.0.0"
        }
      },
      "id": "ICSA-19-036-05",
      "initial_release_date": "2019-02-05T00:00:00.000000Z",
      "revision_history": [
        {
          "date": "2019-02-05T00:00:00.000000Z",
          "legacy_version": "Initial",
          "number": "1",
          "summary": "ICSA-19-036-05 Kunbus PR100088 Modbus Gateway"
        },
        {
          "date": "2019-02-07T00:00:00.000000Z",
          "legacy_version": "A",
          "number": "2",
          "summary": "ICSA-19-036-05 Kunbus PR100088 Modbus Gateway (Update A)"
        },
        {
          "date": "2019-02-28T00:00:00.000000Z",
          "legacy_version": "B",
          "number": "3",
          "summary": "ICSA-19-036-05 Kunbus PR100088 Modbus Gateway (Update B)"
        }
      ],
      "status": "final",
      "version": "3"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c R02 (or Software Version 1.1.13166)",
                "product": {
                  "name": "PR100088 Modbus gateway: All versions prior to Release R02 (or Software Version 1.1.13166)",
                  "product_id": "CSAFPID-0001"
                }
              }
            ],
            "category": "product_name",
            "name": "PR100088 Modbus gateway"
          }
        ],
        "category": "vendor",
        "name": "Kunbus"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2019-6527",
      "cwe": {
        "id": "CWE-287",
        "name": "Improper Authentication"
      },
      "notes": [
        {
          "category": "summary",
          "text": "An attacker may be able change the password for an admin user who is currently or previously logged in, provided the device has not been restarted.CVE-2019-6527 has been assigned to this vulnerability. A CVSS v3 base score of 9.6 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H).",
          "title": "Vulnerability Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-0001"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "nvd.nist.gov",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2019-6527"
        },
        {
          "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:R/S:C/C:H/I:H/A:H"
        }
      ],
      "remediations": [
        {
          "category": "mitigation",
          "details": "Update to Version R03: the updated file can be downloaded from here (Install instructions can be found in the readme file included in the download): https://www.kunbus.de/sicherheitshinweise/update-ii-sicherheitshinweis-f%C3%BCr-gateway-modul-modbus-tcp-slave-art-nr-100088.html?file=files/media/bugfixes/SU_100088_R03.zip",
          "product_ids": [
            "CSAFPID-0001"
          ],
          "url": "https://www.kunbus.de/sicherheitshinweise/update-ii-sicherheitshinweis-f%C3%BCr-gateway-modul-modbus-tcp-slave-art-nr-100088.html?file=files/media/bugfixes/SU_100088_R03.zip"
        },
        {
          "category": "mitigation",
          "details": "These devices are not intended to be used in a public network. Rather, these devices are intended for use in an industrial environment with a protected network architecture.",
          "product_ids": [
            "CSAFPID-0001"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 9.6,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H",
            "version": "3.0"
          },
          "products": [
            "CSAFPID-0001"
          ]
        }
      ]
    },
    {
      "cve": "CVE-2019-6533",
      "cwe": {
        "id": "CWE-306",
        "name": "Missing Authentication for Critical Function"
      },
      "notes": [
        {
          "category": "summary",
          "text": "Registers used to store Modbus values can be read and written from the web interface without authentication.CVE-2019-6533 has been assigned to this vulnerability. A CVSS v3 base score of 10.0 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H)",
          "title": "Vulnerability Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-0001"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "web.nvd.nist.gov",
          "url": "http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2019-6533"
        },
        {
          "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:C/C:H/I:H/A:H"
        }
      ],
      "remediations": [
        {
          "category": "mitigation",
          "details": "Update to Version R03: the updated file can be downloaded from here (Install instructions can be found in the readme file included in the download): https://www.kunbus.de/sicherheitshinweise/update-ii-sicherheitshinweis-f%C3%BCr-gateway-modul-modbus-tcp-slave-art-nr-100088.html?file=files/media/bugfixes/SU_100088_R03.zip",
          "product_ids": [
            "CSAFPID-0001"
          ],
          "url": "https://www.kunbus.de/sicherheitshinweise/update-ii-sicherheitshinweis-f%C3%BCr-gateway-modul-modbus-tcp-slave-art-nr-100088.html?file=files/media/bugfixes/SU_100088_R03.zip"
        },
        {
          "category": "mitigation",
          "details": "These devices are not intended to be used in a public network. Rather, these devices are intended for use in an industrial environment with a protected network architecture.",
          "product_ids": [
            "CSAFPID-0001"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 10.0,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H",
            "version": "3.0"
          },
          "products": [
            "CSAFPID-0001"
          ]
        }
      ]
    },
    {
      "cve": "CVE-2019-6529",
      "cwe": {
        "id": "CWE-20",
        "name": "Improper Input Validation"
      },
      "notes": [
        {
          "category": "summary",
          "text": "An attacker could specially craft an FTP request that could crash the device.CVE-2019-6529 has been assigned to this vulnerability. A CVSS v3 base score of 4.9 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).",
          "title": "Vulnerability Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-0001"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "web.nvd.nist.gov",
          "url": "http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2019-6529"
        },
        {
          "category": "external",
          "summary": "www.first.org",
          "url": "https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "remediations": [
        {
          "category": "mitigation",
          "details": "Update to Version R03: the updated file can be downloaded from here (Install instructions can be found in the readme file included in the download): https://www.kunbus.de/sicherheitshinweise/update-ii-sicherheitshinweis-f%C3%BCr-gateway-modul-modbus-tcp-slave-art-nr-100088.html?file=files/media/bugfixes/SU_100088_R03.zip",
          "product_ids": [
            "CSAFPID-0001"
          ],
          "url": "https://www.kunbus.de/sicherheitshinweise/update-ii-sicherheitshinweis-f%C3%BCr-gateway-modul-modbus-tcp-slave-art-nr-100088.html?file=files/media/bugfixes/SU_100088_R03.zip"
        },
        {
          "category": "mitigation",
          "details": "These devices are not intended to be used in a public network. Rather, these devices are intended for use in an industrial environment with a protected network architecture.",
          "product_ids": [
            "CSAFPID-0001"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 4.9,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.0"
          },
          "products": [
            "CSAFPID-0001"
          ]
        }
      ]
    },
    {
      "cve": "CVE-2019-6531",
      "cwe": {
        "id": "CWE-598",
        "name": "Use of GET Request Method With Sensitive Query Strings"
      },
      "notes": [
        {
          "category": "summary",
          "text": "An attacker could retrieve passwords from an HTTP GET request if the attacker is in an MITM position.CVE-2019-6531 has been assigned to this vulnerability. A CVSS v3 base score of 8.8 has been calculated; the CVSS vector string is (AV:A/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H).",
          "title": "Vulnerability Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-0001"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "web.nvd.nist.gov",
          "url": "http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2019-6531"
        },
        {
          "category": "external",
          "summary": "www.first.org",
          "url": "https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:A/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H"
        }
      ],
      "remediations": [
        {
          "category": "mitigation",
          "details": "Update to Version R03: the updated file can be downloaded from here (Install instructions can be found in the readme file included in the download): https://www.kunbus.de/sicherheitshinweise/update-ii-sicherheitshinweis-f%C3%BCr-gateway-modul-modbus-tcp-slave-art-nr-100088.html?file=files/media/bugfixes/SU_100088_R03.zip",
          "product_ids": [
            "CSAFPID-0001"
          ],
          "url": "https://www.kunbus.de/sicherheitshinweise/update-ii-sicherheitshinweis-f%C3%BCr-gateway-modul-modbus-tcp-slave-art-nr-100088.html?file=files/media/bugfixes/SU_100088_R03.zip"
        },
        {
          "category": "mitigation",
          "details": "These devices are not intended to be used in a public network. Rather, these devices are intended for use in an industrial environment with a protected network architecture.",
          "product_ids": [
            "CSAFPID-0001"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.0/AV:A/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H",
            "version": "3.0"
          },
          "products": [
            "CSAFPID-0001"
          ]
        }
      ]
    },
    {
      "cve": "CVE-2019-6549",
      "cwe": {
        "id": "CWE-312",
        "name": "Cleartext Storage of Sensitive Information"
      },
      "notes": [
        {
          "category": "summary",
          "text": "An attacker could retrieve plain-text credentials stored in an XML file through FTP.CVE-2019-6549 has been assigned to this vulnerability. A CVSS v3 base score of 7.2 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H).",
          "title": "Vulnerability Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-0001"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "web.nvd.nist.gov",
          "url": "http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2019-6549"
        },
        {
          "category": "external",
          "summary": "www.first.org",
          "url": "https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "remediations": [
        {
          "category": "mitigation",
          "details": "Update to Version R03: the updated file can be downloaded from here (Install instructions can be found in the readme file included in the download): https://www.kunbus.de/sicherheitshinweise/update-ii-sicherheitshinweis-f%C3%BCr-gateway-modul-modbus-tcp-slave-art-nr-100088.html?file=files/media/bugfixes/SU_100088_R03.zip",
          "product_ids": [
            "CSAFPID-0001"
          ],
          "url": "https://www.kunbus.de/sicherheitshinweise/update-ii-sicherheitshinweis-f%C3%BCr-gateway-modul-modbus-tcp-slave-art-nr-100088.html?file=files/media/bugfixes/SU_100088_R03.zip"
        },
        {
          "category": "mitigation",
          "details": "These devices are not intended to be used in a public network. Rather, these devices are intended for use in an industrial environment with a protected network architecture.",
          "product_ids": [
            "CSAFPID-0001"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 7.2,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.0"
          },
          "products": [
            "CSAFPID-0001"
          ]
        }
      ]
    }
  ]
}


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  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
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  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.