icsa-23-306-02
Vulnerability from csaf_cisa
Published
2023-11-02 06:00
Modified
2024-02-15 07:00
Summary
Mitsubishi Electric MELSEC iQ-F/iQ-R Series CPU Module (Update A)

Notes

Legal Notice
All information products included in https://us-cert.cisa.gov/ics are provided "as is" for informational purposes only. The Department of Homeland Security (DHS) does not provide any warranties of any kind regarding any information contained within. DHS does not endorse any commercial product or service, referenced in this product or otherwise. Further dissemination of this product is governed by the Traffic Light Protocol (TLP) marking in the header. For more information about TLP, see https://us-cert.cisa.gov/tlp/.
Risk evaluation
Successful exploitation of this vulnerability could allow a remote attacker to prevent legitimate users from logging into the web server function for a certain period, resulting in a denial-of-service condition. The impact of this vulnerability will persist while the attacker continues to attempt the attack.
Critical infrastructure sectors
Critical Manufacturing
Countries/areas deployed
Worldwide
Company headquarters location
Japan
Recommended Practices
CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability. CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.
Recommended Practices
CISA also provides a section for control systems security recommended practices on the ICS webpage on cisa.gov/ics. Several CISA products detailing cyber defense best practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.
Recommended Practices
CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets.
Recommended Practices
Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov/ics in the technical information paper, ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation Strategies.
Recommended Practices
Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents.
Recommended Practices
No known public exploitation specifically targeting this vulnerability has been reported to CISA at this time.


To clipboard 

{
  "document": {
    "acknowledgments": [
      {
        "names": [
          "Peter Cheng"
        ],
        "organization": "ELEX FEIGONG RESEARCH INSTITUTE of Elex Cybersecurity, Inc",
        "summary": "reporting this vulnerability to Mitsubishi Electric"
      }
    ],
    "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": "legal_disclaimer",
        "text": "All information products included in https://us-cert.cisa.gov/ics are provided \"as is\" for informational purposes only. The Department of Homeland Security (DHS) does not provide any warranties of any kind regarding any information contained within. DHS does not endorse any commercial product or service, referenced in this product or otherwise. Further dissemination of this product is governed by the Traffic Light Protocol (TLP) marking in the header. For more information about TLP, see https://us-cert.cisa.gov/tlp/.",
        "title": "Legal Notice"
      },
      {
        "category": "summary",
        "text": "Successful exploitation of this vulnerability could allow a remote attacker to prevent legitimate users from logging into the web server function for a certain period, resulting in a denial-of-service condition. The impact of this vulnerability will persist while the attacker continues to attempt the attack.",
        "title": "Risk evaluation"
      },
      {
        "category": "other",
        "text": "Critical Manufacturing",
        "title": "Critical infrastructure sectors"
      },
      {
        "category": "other",
        "text": "Worldwide",
        "title": "Countries/areas deployed"
      },
      {
        "category": "other",
        "text": "Japan",
        "title": "Company headquarters location"
      },
      {
        "category": "general",
        "text": "CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability. CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.",
        "title": "Recommended Practices"
      },
      {
        "category": "general",
        "text": "CISA also provides a section for control systems security recommended practices on the ICS webpage on cisa.gov/ics. Several CISA products detailing cyber defense best practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.",
        "title": "Recommended Practices"
      },
      {
        "category": "general",
        "text": "CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets.",
        "title": "Recommended Practices"
      },
      {
        "category": "general",
        "text": "Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov/ics in the technical information paper, ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation Strategies.",
        "title": "Recommended Practices"
      },
      {
        "category": "general",
        "text": "Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents.",
        "title": "Recommended Practices"
      },
      {
        "category": "general",
        "text": "No known public exploitation specifically targeting this vulnerability has been reported to CISA at this time.",
        "title": "Recommended Practices"
      }
    ],
    "publisher": {
      "category": "coordinator",
      "contact_details": "central@cisa.dhs.gov",
      "name": "CISA",
      "namespace": "https://www.cisa.gov/"
    },
    "references": [
      {
        "category": "self",
        "summary": "ICS Advisory ICSA-23-306-02 JSON",
        "url": "https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2023/icsa-23-306-02.json"
      },
      {
        "category": "self",
        "summary": "ICSA Advisory ICSA-23-306-02 - Web Version",
        "url": "https://www.cisa.gov/news-events/ics-advisories/icsa-23-306-02"
      },
      {
        "category": "external",
        "summary": "Recommended Practices",
        "url": "https://www.cisa.gov/resources-tools/resources/ics-recommended-practices"
      },
      {
        "category": "external",
        "summary": "Recommended Practices",
        "url": "https://www.cisa.gov/sites/default/files/publications/Cybersecurity_Best_Practices_for_Industrial_Control_Systems.pdf"
      },
      {
        "category": "external",
        "summary": "Recommended Practices",
        "url": "https://www.cisa.gov/topics/industrial-control-systems"
      },
      {
        "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://us-cert.cisa.gov/sites/default/files/recommended_practices/NCCIC_ICS-CERT_Defense_in_Depth_2016_S508C.pdf"
      },
      {
        "category": "external",
        "summary": "Recommended Practices",
        "url": "https://www.cisa.gov/uscert/ics/tips/ICS-TIP-12-146-01B"
      }
    ],
    "title": "Mitsubishi Electric MELSEC iQ-F/iQ-R Series CPU Module (Update A)",
    "tracking": {
      "current_release_date": "2024-02-15T07:00:00.000000Z",
      "generator": {
        "engine": {
          "name": "CISA CSAF Generator",
          "version": "1.0.0"
        }
      },
      "id": "ICSA-23-306-02",
      "initial_release_date": "2023-11-02T06:00:00.000000Z",
      "revision_history": [
        {
          "date": "2023-11-02T06:00:00.000000Z",
          "legacy_version": "Initial",
          "number": "1",
          "summary": "Initial Publication"
        },
        {
          "date": "2024-02-15T07:00:00.000000Z",
          "legacy_version": "Update A",
          "number": "2",
          "summary": "Update A - Updated all iterations of MELSEC iQ-F to MELSEC iQ-F/iQ-R throughout the document, added iQ-R products and versions to Affected Products section, and additional mitigations in Mitigation Section."
        }
      ],
      "status": "final",
      "version": "2"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:all/*",
                "product": {
                  "name": "Mitsubishi Electric FX5U-xMy/z x=32,64,80, y=T,R, z=ES,DS,ESS,DSS (Serial number 17X**** and later): vers:all/*",
                  "product_id": "CSAFPID-0001"
                }
              }
            ],
            "category": "product_name",
            "name": "FX5U-xMy/z x=32,64,80, y=T,R, z=ES,DS,ESS,DSS (Serial number 17X**** and later)"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003e=1.060",
                "product": {
                  "name": "Mitsubishi Electric FX5U-xMy/z x=32,64,80, y=T,R, z=ES,DS,ESS,DSS (Serial number 179**** and prior): \u003e=1.060",
                  "product_id": "CSAFPID-0002"
                }
              }
            ],
            "category": "product_name",
            "name": "FX5U-xMy/z x=32,64,80, y=T,R, z=ES,DS,ESS,DSS (Serial number 179**** and prior)"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:all/*",
                "product": {
                  "name": "Mitsubishi Electric FX5UC-xMy/z x=32,64,96, y=T, z=D,DSS (Serial number 17X**** and later): vers:all/*",
                  "product_id": "CSAFPID-0003"
                }
              }
            ],
            "category": "product_name",
            "name": "FX5UC-xMy/z x=32,64,96, y=T, z=D,DSS (Serial number 17X**** and later)"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003e=1.060",
                "product": {
                  "name": "Mitsubishi Electric FX5UC-xMy/z x=32,64,96, y=T, z=D,DSS (Serial number 179**** and prior): \u003e=1.060",
                  "product_id": "CSAFPID-0004"
                }
              }
            ],
            "category": "product_name",
            "name": "FX5UC-xMy/z x=32,64,96, y=T, z=D,DSS (Serial number 179**** and prior)"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:all/*",
                "product": {
                  "name": "Mitsubishi Electric FX5UC-32MT/DS-TS, FX5UC-32MT/DSS-TS, FX5UC-32MR/DS-TS: vers:all/*",
                  "product_id": "CSAFPID-0005"
                }
              }
            ],
            "category": "product_name",
            "name": "FX5UC-32MT/DS-TS, FX5UC-32MT/DSS-TS, FX5UC-32MR/DS-TS"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:all/*",
                "product": {
                  "name": "Mitsubishi Electric FX5UJ-xMy/z x=24,40,60, y=T,R, z=ES,DS,ESS,DSS: vers:all/*",
                  "product_id": "CSAFPID-0006"
                }
              }
            ],
            "category": "product_name",
            "name": "FX5UJ-xMy/z x=24,40,60, y=T,R, z=ES,DS,ESS,DSS"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:all/*",
                "product": {
                  "name": "Mitsubishi Electric FX5UJ-xMy/ES-A* x=24,40,60, y=T,R: vers:all/*",
                  "product_id": "CSAFPID-0007"
                }
              }
            ],
            "category": "product_name",
            "name": "FX5UJ-xMy/ES-A* x=24,40,60, y=T,R"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:all/*",
                "product": {
                  "name": "Mitsubishi Electric FX5S-xMy/z x=30,40,60,80*, y=T,R, z=ES,ESS: vers:all/*",
                  "product_id": "CSAFPID-0008"
                }
              }
            ],
            "category": "product_name",
            "name": "FX5S-xMy/z x=30,40,60,80*, y=T,R, z=ES,ESS"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003e=05",
                "product": {
                  "name": "Mitsubishi Electric R00/01/02CPU: \u003e=05",
                  "product_id": "CSAFPID-0009"
                }
              }
            ],
            "category": "product_name",
            "name": "R00/01/02CPU"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003e=35",
                "product": {
                  "name": "Mitsubishi Electric R04/08/16/32/120(EN)CPU: \u003e=35",
                  "product_id": "CSAFPID-0010"
                }
              }
            ],
            "category": "product_name",
            "name": "R04/08/16/32/120(EN)CPU"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003e=37",
                "product": {
                  "name": "Mitsubishi Electric R08/16/32/120/PCPU: \u003e=37",
                  "product_id": "CSAFPID-0011"
                }
              }
            ],
            "category": "product_name",
            "name": "R08/16/32/120/PCPU"
          }
        ],
        "category": "vendor",
        "name": "Mitsubishi Electric"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2023-4625",
      "cwe": {
        "id": "CWE-307",
        "name": "Improper Restriction of Excessive Authentication Attempts"
      },
      "notes": [
        {
          "category": "summary",
          "text": "A denial-of-service vulnerability exists in the web server function of the MELSEC iQ-F/iQ-R Series CPU module, which could allow an attacker to prevent legitimate users from logging in to the web server function for a certain period of time. The impact of this vulnerability will persist while the attacker continues to attempt the attack.",
          "title": "Vulnerability Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-0001",
          "CSAFPID-0002",
          "CSAFPID-0003",
          "CSAFPID-0004",
          "CSAFPID-0005",
          "CSAFPID-0006",
          "CSAFPID-0007",
          "CSAFPID-0008",
          "CSAFPID-0009",
          "CSAFPID-0010",
          "CSAFPID-0011"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "web.nvd.nist.gov",
          "url": "http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2023-4625"
        },
        {
          "category": "external",
          "summary": "www.first.org",
          "url": "https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"
        }
      ],
      "remediations": [
        {
          "category": "mitigation",
          "details": "Mitsubishi Electric recommends that users take the following mitigation measures to minimize the risk:",
          "product_ids": [
            "CSAFPID-0001",
            "CSAFPID-0002",
            "CSAFPID-0003",
            "CSAFPID-0004",
            "CSAFPID-0005",
            "CSAFPID-0006",
            "CSAFPID-0007",
            "CSAFPID-0008",
            "CSAFPID-0009",
            "CSAFPID-0010",
            "CSAFPID-0011"
          ]
        },
        {
          "category": "mitigation",
          "details": "Use a firewall or virtual private network (VPN), etc. to prevent unauthorized access when Internet access is required.",
          "product_ids": [
            "CSAFPID-0001",
            "CSAFPID-0002",
            "CSAFPID-0003",
            "CSAFPID-0004",
            "CSAFPID-0005",
            "CSAFPID-0006",
            "CSAFPID-0007",
            "CSAFPID-0008",
            "CSAFPID-0009",
            "CSAFPID-0010",
            "CSAFPID-0011"
          ]
        },
        {
          "category": "mitigation",
          "details": "Use within a LAN and block access from untrusted networks and hosts through firewalls.",
          "product_ids": [
            "CSAFPID-0001",
            "CSAFPID-0002",
            "CSAFPID-0003",
            "CSAFPID-0004",
            "CSAFPID-0005",
            "CSAFPID-0006",
            "CSAFPID-0007",
            "CSAFPID-0008",
            "CSAFPID-0009",
            "CSAFPID-0010",
            "CSAFPID-0011"
          ]
        },
        {
          "category": "mitigation",
          "details": "Use IP filter function to block access from untrusted hosts. For details on the IP filter function, following manual for each product; \"12.1 IP Filter Function\" in the MELSEC iQ-F FX5 User\u0027s Manual (Ethernet Communication), \"1.13 Security\" \u2013 \"IP Filter\" in the MELSEC iQ-R Ethernet User\u0027s Manual (Application).",
          "product_ids": [
            "CSAFPID-0001",
            "CSAFPID-0002",
            "CSAFPID-0003",
            "CSAFPID-0004",
            "CSAFPID-0005",
            "CSAFPID-0006",
            "CSAFPID-0007",
            "CSAFPID-0008",
            "CSAFPID-0009",
            "CSAFPID-0010",
            "CSAFPID-0011"
          ]
        },
        {
          "category": "mitigation",
          "details": "Restrict physical access to the affected products and the LAN that is connected by them.",
          "product_ids": [
            "CSAFPID-0001",
            "CSAFPID-0002",
            "CSAFPID-0003",
            "CSAFPID-0004",
            "CSAFPID-0005",
            "CSAFPID-0006",
            "CSAFPID-0007",
            "CSAFPID-0008",
            "CSAFPID-0009",
            "CSAFPID-0010",
            "CSAFPID-0011"
          ]
        },
        {
          "category": "mitigation",
          "details": "For additional information refer to Mitsubishi Electric\u0027s security bulletin 2023-014_en.",
          "product_ids": [
            "CSAFPID-0001",
            "CSAFPID-0002",
            "CSAFPID-0003",
            "CSAFPID-0004",
            "CSAFPID-0005",
            "CSAFPID-0006",
            "CSAFPID-0007",
            "CSAFPID-0008",
            "CSAFPID-0009",
            "CSAFPID-0010",
            "CSAFPID-0011"
          ],
          "url": "https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2023-014_en.pdf"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-0001",
            "CSAFPID-0002",
            "CSAFPID-0003",
            "CSAFPID-0004",
            "CSAFPID-0005",
            "CSAFPID-0006",
            "CSAFPID-0007",
            "CSAFPID-0008",
            "CSAFPID-0009",
            "CSAFPID-0010",
            "CSAFPID-0011"
          ]
        }
      ]
    }
  ]
}


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