ICSA-21-217-01
Vulnerability from csaf_cisa
Published
2021-08-05 00:00
Modified
2021-12-16 00:00
Summary
HCC Embedded InterNiche TCP/IP stack, NicheLite (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 may result in unauthorized access to arbitrary information, DNS cache poisoning, remote code execution, or a denial-of-service condition.
Critical infrastructure sectors
Multiple
Countries/areas deployed
Worldwide
Company headquarters location
Hungary
Recommended Practices
CISA recommends users take defensive measures to minimize the risk of exploitation of these vulnerabilities. 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 on cisa.gov. Several recommended practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.
Recommended Practices
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.
Exploitability
No known public exploits specifically target these vulnerabilities.


To clipboard 

{
  "document": {
    "acknowledgments": [
      {
        "names": [
          "Amine Amri",
          "Stanislav Dashevskyi",
          "Daniel dos Santos"
        ],
        "organization": "Forescout",
        "summary": "reporting these vulnerabilities to CISA"
      },
      {
        "names": [
          "Asaf Karas",
          "Shachar Menashe"
        ],
        "organization": "VDOO",
        "summary": "reporting these vulnerabilities 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 these vulnerabilities may result in unauthorized access to arbitrary information, DNS cache poisoning, remote code execution, or a denial-of-service condition.",
        "title": "Risk evaluation"
      },
      {
        "category": "other",
        "text": "Multiple",
        "title": "Critical infrastructure sectors"
      },
      {
        "category": "other",
        "text": "Worldwide",
        "title": "Countries/areas deployed"
      },
      {
        "category": "other",
        "text": "Hungary",
        "title": "Company headquarters location"
      },
      {
        "category": "general",
        "text": "CISA recommends users take defensive measures to minimize the risk of exploitation of these vulnerabilities. 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 on 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": "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.",
        "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-21-217-01 JSON",
        "url": "https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2021/icsa-21-217-01.json"
      },
      {
        "category": "self",
        "summary": "ICS Advisory ICSA-21-217-01 Web Version",
        "url": "https://www.cisa.gov/news-events/ics-advisories/icsa-21-217-01"
      },
      {
        "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://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/news-events/ics-advisories/icsa-21-217-01"
      }
    ],
    "title": "HCC Embedded InterNiche TCP/IP stack, NicheLite (Update B)",
    "tracking": {
      "current_release_date": "2021-12-16T00:00:00.000000Z",
      "generator": {
        "engine": {
          "name": "CISA CSAF Generator",
          "version": "1.0.0"
        }
      },
      "id": "ICSA-21-217-01",
      "initial_release_date": "2021-08-05T00:00:00.000000Z",
      "revision_history": [
        {
          "date": "2021-08-05T00:00:00.000000Z",
          "legacy_version": "Initial",
          "number": "1",
          "summary": "ICSA-21-217-01 HCC Embedded InterNiche TCPIP stack NicheLite"
        },
        {
          "date": "2021-09-14T00:00:00.000000Z",
          "legacy_version": "A",
          "number": "2",
          "summary": "ICSA-21-217-01 HCC Embedded InterNiche TCPIP stack NicheLite (Update A)"
        },
        {
          "date": "2021-12-16T00:00:00.000000Z",
          "legacy_version": "B",
          "number": "3",
          "summary": "ICSA-21-217-01 HCC Embedded InterNiche TCP/IP stack NicheLite (Update B)"
        }
      ],
      "status": "final",
      "version": "3"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c 4.3",
                "product": {
                  "name": "InterNiche stack: All versions prior to v4.3",
                  "product_id": "CSAFPID-0001"
                }
              }
            ],
            "category": "product_name",
            "name": "InterNiche stack"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c 4.3",
                "product": {
                  "name": "NicheLite: All versions prior to v4.3",
                  "product_id": "CSAFPID-0002"
                }
              }
            ],
            "category": "product_name",
            "name": "NicheLite"
          }
        ],
        "category": "vendor",
        "name": "HCC Embedded"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2020-25767",
      "cwe": {
        "id": "CWE-466",
        "name": "Return of Pointer Value Outside of Expected Range"
      },
      "notes": [
        {
          "category": "summary",
          "text": "When parsing DNS domain names, there are no checks on whether a domain name compression pointer is pointing within the bounds of the packet, which may result in an out-of-bounds read.CVE-2020-25767 has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).",
          "title": "Vulnerability Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-0001",
          "CSAFPID-0002"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "web.nvd.nist.gov",
          "url": "http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2020-25767"
        },
        {
          "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": "HCC recommends users apply release v4.3 or later to mitigate these vulnerabilities. For more information, contact HCC.",
          "product_ids": [
            "CSAFPID-0001",
            "CSAFPID-0002"
          ],
          "url": "https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-022_en.pdf"
        },
        {
          "category": "vendor_fix",
          "details": "Additional vendors affected by the reported vulnerabilities have also released security advisories related to their affected products. Those advisories are as follows:",
          "product_ids": [
            "CSAFPID-0001",
            "CSAFPID-0002"
          ],
          "url": "https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-022_en.pdf"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.0"
          },
          "products": [
            "CSAFPID-0001",
            "CSAFPID-0002"
          ]
        }
      ]
    },
    {
      "cve": "CVE-2020-25928",
      "cwe": {
        "id": "CWE-130",
        "name": "Improper Handling of Length Parameter Inconsistency"
      },
      "notes": [
        {
          "category": "summary",
          "text": "The routine for parsing DNS response packets does not check the response data length field of individual DNS answers, which may cause an out-of-bounds read/write.CVE-2020-25928 has been assigned to this vulnerability. A CVSS v3 base score of 9.8 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).",
          "title": "Vulnerability Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-0001",
          "CSAFPID-0002"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "web.nvd.nist.gov",
          "url": "http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2020-25928"
        },
        {
          "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:H/I:H/A:H"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "HCC recommends users apply release v4.3 or later to mitigate these vulnerabilities. For more information, contact HCC.",
          "product_ids": [
            "CSAFPID-0001",
            "CSAFPID-0002"
          ],
          "url": "https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-022_en.pdf"
        },
        {
          "category": "vendor_fix",
          "details": "Additional vendors affected by the reported vulnerabilities have also released security advisories related to their affected products. Those advisories are as follows:",
          "product_ids": [
            "CSAFPID-0001",
            "CSAFPID-0002"
          ],
          "url": "https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-022_en.pdf"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.0"
          },
          "products": [
            "CSAFPID-0001",
            "CSAFPID-0002"
          ]
        }
      ]
    },
    {
      "cve": "CVE-2020-25927",
      "cwe": {
        "id": "CWE-130",
        "name": "Improper Handling of Length Parameter Inconsistency"
      },
      "notes": [
        {
          "category": "summary",
          "text": "The number of queries or responses specified in the DNS packet header is not validated with the query/response data available in the DNS packet, leading to an out-of-bounds read.CVE-2020-25927 has been assigned to this vulnerability. A CVSS v3 base score of 8.2 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H).",
          "title": "Vulnerability Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-0001",
          "CSAFPID-0002"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "web.nvd.nist.gov",
          "url": "http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2020-25927"
        },
        {
          "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:L/A:H"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "HCC recommends users apply release v4.3 or later to mitigate these vulnerabilities. For more information, contact HCC.",
          "product_ids": [
            "CSAFPID-0001",
            "CSAFPID-0002"
          ],
          "url": "https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-022_en.pdf"
        },
        {
          "category": "vendor_fix",
          "details": "Additional vendors affected by the reported vulnerabilities have also released security advisories related to their affected products. Those advisories are as follows:",
          "product_ids": [
            "CSAFPID-0001",
            "CSAFPID-0002"
          ],
          "url": "https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-022_en.pdf"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 8.2,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H",
            "version": "3.0"
          },
          "products": [
            "CSAFPID-0001",
            "CSAFPID-0002"
          ]
        }
      ]
    },
    {
      "cve": "CVE-2020-25926",
      "cwe": {
        "id": "CWE-330",
        "name": "Use of Insufficiently Random Values"
      },
      "notes": [
        {
          "category": "summary",
          "text": "The DNS client does not sufficiently randomize transaction IDs, facilitating DNS cache poisoning attacks.CVE-2020-25926 has been assigned to this vulnerability. A CVSS v3 base score of 4.0 has been calculated; the CVSS vector string is (AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N).",
          "title": "Vulnerability Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-0001",
          "CSAFPID-0002"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "web.nvd.nist.gov",
          "url": "http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2020-25926"
        },
        {
          "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:C/C:N/I:L/A:N"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "HCC recommends users apply release v4.3 or later to mitigate these vulnerabilities. For more information, contact HCC.",
          "product_ids": [
            "CSAFPID-0001",
            "CSAFPID-0002"
          ],
          "url": "https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-022_en.pdf"
        },
        {
          "category": "vendor_fix",
          "details": "Additional vendors affected by the reported vulnerabilities have also released security advisories related to their affected products. Those advisories are as follows:",
          "product_ids": [
            "CSAFPID-0001",
            "CSAFPID-0002"
          ],
          "url": "https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-022_en.pdf"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 4.0,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N",
            "version": "3.0"
          },
          "products": [
            "CSAFPID-0001",
            "CSAFPID-0002"
          ]
        }
      ]
    },
    {
      "cve": "CVE-2020-35683",
      "cwe": {
        "id": "CWE-20",
        "name": "Improper Input Validation"
      },
      "notes": [
        {
          "category": "summary",
          "text": "The code that parses ICMP packets relies on an unchecked value of the IP payload size to compute the ICMP checksum, which may result in an out-of-bounds read.CVE-2020-35683 has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).",
          "title": "Vulnerability Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-0001",
          "CSAFPID-0002"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "web.nvd.nist.gov",
          "url": "http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2020-35683"
        },
        {
          "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": "HCC recommends users apply release v4.3 or later to mitigate these vulnerabilities. For more information, contact HCC.",
          "product_ids": [
            "CSAFPID-0001",
            "CSAFPID-0002"
          ],
          "url": "https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-022_en.pdf"
        },
        {
          "category": "vendor_fix",
          "details": "Additional vendors affected by the reported vulnerabilities have also released security advisories related to their affected products. Those advisories are as follows:",
          "product_ids": [
            "CSAFPID-0001",
            "CSAFPID-0002"
          ],
          "url": "https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-022_en.pdf"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.0"
          },
          "products": [
            "CSAFPID-0001",
            "CSAFPID-0002"
          ]
        }
      ]
    },
    {
      "cve": "CVE-2020-35684",
      "cwe": {
        "id": "CWE-20",
        "name": "Improper Input Validation"
      },
      "notes": [
        {
          "category": "summary",
          "text": "The code that parses TCP packets relies on an unchecked value of the IP payload size to compute the length of the TCP payload within the TCP checksum computation function, which may result in an out-of-bounds read.CVE-2020-35684 has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).",
          "title": "Vulnerability Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-0001",
          "CSAFPID-0002"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "web.nvd.nist.gov",
          "url": "http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2020-35684"
        },
        {
          "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": "HCC recommends users apply release v4.3 or later to mitigate these vulnerabilities. For more information, contact HCC.",
          "product_ids": [
            "CSAFPID-0001",
            "CSAFPID-0002"
          ],
          "url": "https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-022_en.pdf"
        },
        {
          "category": "vendor_fix",
          "details": "Additional vendors affected by the reported vulnerabilities have also released security advisories related to their affected products. Those advisories are as follows:",
          "product_ids": [
            "CSAFPID-0001",
            "CSAFPID-0002"
          ],
          "url": "https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-022_en.pdf"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.0"
          },
          "products": [
            "CSAFPID-0001",
            "CSAFPID-0002"
          ]
        }
      ]
    },
    {
      "cve": "CVE-2020-35685",
      "cwe": {
        "id": "CWE-330",
        "name": "Use of Insufficiently Random Values"
      },
      "notes": [
        {
          "category": "summary",
          "text": "TCP ISNs are insufficiently randomized, which may result in TCP spoofing by an attacker.CVE-2020-35685 has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N).",
          "title": "Vulnerability Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-0001",
          "CSAFPID-0002"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "web.nvd.nist.gov",
          "url": "http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2020-35685"
        },
        {
          "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:H/A:N"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "HCC recommends users apply release v4.3 or later to mitigate these vulnerabilities. For more information, contact HCC.",
          "product_ids": [
            "CSAFPID-0001",
            "CSAFPID-0002"
          ],
          "url": "https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-022_en.pdf"
        },
        {
          "category": "vendor_fix",
          "details": "Additional vendors affected by the reported vulnerabilities have also released security advisories related to their affected products. Those advisories are as follows:",
          "product_ids": [
            "CSAFPID-0001",
            "CSAFPID-0002"
          ],
          "url": "https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-022_en.pdf"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
            "version": "3.0"
          },
          "products": [
            "CSAFPID-0001",
            "CSAFPID-0002"
          ]
        }
      ]
    },
    {
      "cve": "CVE-2021-31400",
      "cwe": {
        "id": "CWE-248",
        "name": "Uncaught Exception"
      },
      "notes": [
        {
          "category": "summary",
          "text": "The TCP urgent data processing function may invoke a panic function, which may result in an infinite loop.CVE-2021-31400 has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N).",
          "title": "Vulnerability Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-0001",
          "CSAFPID-0002"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "web.nvd.nist.gov",
          "url": "http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2021-31400"
        },
        {
          "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:H/A:N"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "HCC recommends users apply release v4.3 or later to mitigate these vulnerabilities. For more information, contact HCC.",
          "product_ids": [
            "CSAFPID-0001",
            "CSAFPID-0002"
          ],
          "url": "https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-022_en.pdf"
        },
        {
          "category": "vendor_fix",
          "details": "Additional vendors affected by the reported vulnerabilities have also released security advisories related to their affected products. Those advisories are as follows:",
          "product_ids": [
            "CSAFPID-0001",
            "CSAFPID-0002"
          ],
          "url": "https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-022_en.pdf"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
            "version": "3.0"
          },
          "products": [
            "CSAFPID-0001",
            "CSAFPID-0002"
          ]
        }
      ]
    },
    {
      "cve": "CVE-2021-31401",
      "cwe": {
        "id": "CWE-20",
        "name": "Improper Input Validation"
      },
      "notes": [
        {
          "category": "summary",
          "text": "An attacker could send a specially crafted IP packet to trigger an integer overflow due to the lack of IP length validation.CVE-2021-31401 has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N).",
          "title": "Vulnerability Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-0001",
          "CSAFPID-0002"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "web.nvd.nist.gov",
          "url": "http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2021-31401"
        },
        {
          "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:H/A:N"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "HCC recommends users apply release v4.3 or later to mitigate these vulnerabilities. For more information, contact HCC.",
          "product_ids": [
            "CSAFPID-0001",
            "CSAFPID-0002"
          ],
          "url": "https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-022_en.pdf"
        },
        {
          "category": "vendor_fix",
          "details": "Additional vendors affected by the reported vulnerabilities have also released security advisories related to their affected products. Those advisories are as follows:",
          "product_ids": [
            "CSAFPID-0001",
            "CSAFPID-0002"
          ],
          "url": "https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-022_en.pdf"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
            "version": "3.0"
          },
          "products": [
            "CSAFPID-0001",
            "CSAFPID-0002"
          ]
        }
      ]
    },
    {
      "cve": "CVE-2021-31226",
      "cwe": {
        "id": "CWE-20",
        "name": "Improper Input Validation"
      },
      "notes": [
        {
          "category": "summary",
          "text": "A potential heap buffer overflow exists in the code that parses the HTTP POST request due to lack of size validation.CVE-2021-31226 has been assigned to this vulnerability. A CVSS v3 base score of 9.1 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H).",
          "title": "Vulnerability Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-0001",
          "CSAFPID-0002"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "web.nvd.nist.gov",
          "url": "http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2021-31226"
        },
        {
          "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:H/A:H"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "HCC recommends users apply release v4.3 or later to mitigate these vulnerabilities. For more information, contact HCC.",
          "product_ids": [
            "CSAFPID-0001",
            "CSAFPID-0002"
          ],
          "url": "https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-022_en.pdf"
        },
        {
          "category": "vendor_fix",
          "details": "Additional vendors affected by the reported vulnerabilities have also released security advisories related to their affected products. Those advisories are as follows:",
          "product_ids": [
            "CSAFPID-0001",
            "CSAFPID-0002"
          ],
          "url": "https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-022_en.pdf"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 9.1,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H",
            "version": "3.0"
          },
          "products": [
            "CSAFPID-0001",
            "CSAFPID-0002"
          ]
        }
      ]
    },
    {
      "cve": "CVE-2021-31227",
      "cwe": {
        "id": "CWE-839",
        "name": "Numeric Range Comparison Without Minimum Check"
      },
      "notes": [
        {
          "category": "summary",
          "text": "A potential heap buffer overflow exists in the code that parses the HTTP POST request due to an incorrect signed integer comparison.CVE-2021-31227 has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N).",
          "title": "Vulnerability Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-0001",
          "CSAFPID-0002"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "web.nvd.nist.gov",
          "url": "http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2021-31227"
        },
        {
          "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:H/A:N"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "HCC recommends users apply release v4.3 or later to mitigate these vulnerabilities. For more information, contact HCC.",
          "product_ids": [
            "CSAFPID-0001",
            "CSAFPID-0002"
          ],
          "url": "https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-022_en.pdf"
        },
        {
          "category": "vendor_fix",
          "details": "Additional vendors affected by the reported vulnerabilities have also released security advisories related to their affected products. Those advisories are as follows:",
          "product_ids": [
            "CSAFPID-0001",
            "CSAFPID-0002"
          ],
          "url": "https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-022_en.pdf"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
            "version": "3.0"
          },
          "products": [
            "CSAFPID-0001",
            "CSAFPID-0002"
          ]
        }
      ]
    },
    {
      "cve": "CVE-2021-31228",
      "cwe": {
        "id": "CWE-340",
        "name": "Generation of Predictable Numbers or Identifiers"
      },
      "notes": [
        {
          "category": "summary",
          "text": "An attacker may be able to predict DNS queries \u0027 source port to then send forged DNS response packets, which may be accepted as valid answers.CVE-2021-31228 has been assigned to this vulnerability. A CVSS v3 base score of 4.0 has been calculated; the CVSS vector string is (AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N).",
          "title": "Vulnerability Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-0001",
          "CSAFPID-0002"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "web.nvd.nist.gov",
          "url": "http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2021-31228"
        },
        {
          "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:C/C:N/I:L/A:N"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "HCC recommends users apply release v4.3 or later to mitigate these vulnerabilities. For more information, contact HCC.",
          "product_ids": [
            "CSAFPID-0001",
            "CSAFPID-0002"
          ],
          "url": "https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-022_en.pdf"
        },
        {
          "category": "vendor_fix",
          "details": "Additional vendors affected by the reported vulnerabilities have also released security advisories related to their affected products. Those advisories are as follows:",
          "product_ids": [
            "CSAFPID-0001",
            "CSAFPID-0002"
          ],
          "url": "https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-022_en.pdf"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 4.0,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N",
            "version": "3.0"
          },
          "products": [
            "CSAFPID-0001",
            "CSAFPID-0002"
          ]
        }
      ]
    },
    {
      "cve": "CVE-2021-27565",
      "cwe": {
        "id": "CWE-703",
        "name": "Improper Check or Handling of Exceptional Conditions"
      },
      "notes": [
        {
          "category": "summary",
          "text": "Unhandled HTTP requests result in an infinite loop that disrupts TCP/IP communication.CVE-2021-27565 has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N).",
          "title": "Vulnerability Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-0001",
          "CSAFPID-0002"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "web.nvd.nist.gov",
          "url": "http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2021-27565"
        },
        {
          "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:H/A:N"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "HCC recommends users apply release v4.3 or later to mitigate these vulnerabilities. For more information, contact HCC.",
          "product_ids": [
            "CSAFPID-0001",
            "CSAFPID-0002"
          ],
          "url": "https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-022_en.pdf"
        },
        {
          "category": "vendor_fix",
          "details": "Additional vendors affected by the reported vulnerabilities have also released security advisories related to their affected products. Those advisories are as follows:",
          "product_ids": [
            "CSAFPID-0001",
            "CSAFPID-0002"
          ],
          "url": "https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-022_en.pdf"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
            "version": "3.0"
          },
          "products": [
            "CSAFPID-0001",
            "CSAFPID-0002"
          ]
        }
      ]
    },
    {
      "cve": "CVE-2021-36762",
      "cwe": {
        "id": "CWE-170",
        "name": "Improper Null Termination"
      },
      "notes": [
        {
          "category": "summary",
          "text": "The TFTP packet processing function does not ensure that the filename is null-terminated, which may result in a denial-of-service condition.CVE-2021-36762 has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N).",
          "title": "Vulnerability Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-0001",
          "CSAFPID-0002"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "web.nvd.nist.gov",
          "url": "http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2021-36762"
        },
        {
          "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:H/A:N"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "HCC recommends users apply release v4.3 or later to mitigate these vulnerabilities. For more information, contact HCC.",
          "product_ids": [
            "CSAFPID-0001",
            "CSAFPID-0002"
          ],
          "url": "https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-022_en.pdf"
        },
        {
          "category": "vendor_fix",
          "details": "Additional vendors affected by the reported vulnerabilities have also released security advisories related to their affected products. Those advisories are as follows:",
          "product_ids": [
            "CSAFPID-0001",
            "CSAFPID-0002"
          ],
          "url": "https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-022_en.pdf"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
            "version": "3.0"
          },
          "products": [
            "CSAFPID-0001",
            "CSAFPID-0002"
          ]
        }
      ]
    }
  ]
}


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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.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • 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.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • 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.