icsa-21-287-03
Vulnerability from csaf_cisa
Published
2021-08-06 06:00
Modified
2024-04-18 06:00
Summary
Mitsubishi Electric MELSEC iQ-R Series

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 be able to log in to the CPU module by obtaining credentials.
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.


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{
  "document": {
    "acknowledgments": [
      {
        "names": [
          "Ivan Speziale"
        ],
        "organization": "Nozomi Networks",
        "summary": "reporting this vulnerability 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": "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 be able to log in to the CPU module by obtaining credentials.",
        "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-21-287-03 JSON",
        "url": "https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2021/icsa-21-287-03.json"
      },
      {
        "category": "self",
        "summary": "ICSA Advisory ICSA-21-287-03 - Web Version",
        "url": "https://www.cisa.gov/news-events/ics-advisories/icsa-21-287-03"
      },
      {
        "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-R Series",
    "tracking": {
      "current_release_date": "2024-04-18T06:00:00.000000Z",
      "generator": {
        "engine": {
          "name": "CISA CSAF Generator",
          "version": "1.0.0"
        }
      },
      "id": "ICSA-21-287-03",
      "initial_release_date": "2021-08-06T06:00:00.000000Z",
      "revision_history": [
        {
          "date": "2021-08-06T06:00:00.000000Z",
          "legacy_version": "Initial",
          "number": "1",
          "summary": "Initial Publication"
        },
        {
          "date": "2021-10-14T06:00:00.000000Z",
          "legacy_version": "Update A",
          "number": "2",
          "summary": "Update A - Changed affected products and mitigation sections."
        },
        {
          "date": "2024-04-18T06:00:00.000000Z",
          "legacy_version": "Update B",
          "number": "3",
          "summary": "Update B - Added mitigations for MELSEC iQ-R series SIL2 Process CPU"
        }
      ],
      "status": "final",
      "version": "3"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c=26",
                "product": {
                  "name": "Mitsubishi Electric Corporation MELSEC iQ-R series Safety CPU R08SFCPU Firmware: \u003c=26",
                  "product_id": "CSAFPID-0001"
                }
              }
            ],
            "category": "product_name",
            "name": "MELSEC iQ-R series Safety CPU R08SFCPU Firmware"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c=26",
                "product": {
                  "name": "Mitsubishi Electric Corporation MELSEC iQ-R series Safety CPU R16SFCPU Firmware: \u003c=26",
                  "product_id": "CSAFPID-0002"
                }
              }
            ],
            "category": "product_name",
            "name": "MELSEC iQ-R series Safety CPU R16SFCPU Firmware"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c=26",
                "product": {
                  "name": "Mitsubishi Electric Corporation MELSEC iQ-R series Safety CPU R32SFCPU Firmware: \u003c=26",
                  "product_id": "CSAFPID-0003"
                }
              }
            ],
            "category": "product_name",
            "name": "MELSEC iQ-R series Safety CPU R32SFCPU Firmware"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c=26",
                "product": {
                  "name": "Mitsubishi Electric Corporation MELSEC iQ-R series Safety CPU R120SFCPU Firmware: \u003c=26",
                  "product_id": "CSAFPID-0004"
                }
              }
            ],
            "category": "product_name",
            "name": "MELSEC iQ-R series Safety CPU R120SFCPU Firmware"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c=11",
                "product": {
                  "name": "Mitsubishi Electric Corporation MELSEC iQ-R series SIL2 Process CPU R08PSFCPU Firmware: \u003c=11",
                  "product_id": "CSAFPID-0005"
                }
              }
            ],
            "category": "product_name",
            "name": "MELSEC iQ-R series SIL2 Process CPU R08PSFCPU Firmware"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c=11",
                "product": {
                  "name": "Mitsubishi Electric Corporation MELSEC iQ-R series SIL2 Process CPU R16PSFCPU Firmware: \u003c=11",
                  "product_id": "CSAFPID-0006"
                }
              }
            ],
            "category": "product_name",
            "name": "MELSEC iQ-R series SIL2 Process CPU R16PSFCPU Firmware"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c=11",
                "product": {
                  "name": "Mitsubishi Electric Corporation MELSEC iQ-R series SIL2 Process CPU R32PSFCPU Firmware: \u003c=11",
                  "product_id": "CSAFPID-0007"
                }
              }
            ],
            "category": "product_name",
            "name": "MELSEC iQ-R series SIL2 Process CPU R32PSFCPU Firmware"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c=11",
                "product": {
                  "name": "Mitsubishi Electric Corporation MELSEC iQ-R series SIL2 Process CPU R120PSFCPU Firmware: \u003c=11",
                  "product_id": "CSAFPID-0008"
                }
              }
            ],
            "category": "product_name",
            "name": "MELSEC iQ-R series SIL2 Process CPU R120PSFCPU Firmware"
          }
        ],
        "category": "vendor",
        "name": "Mitsubishi Electric Corporation"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2021-20599",
      "cwe": {
        "id": "CWE-319",
        "name": "Cleartext Transmission of Sensitive Information"
      },
      "notes": [
        {
          "category": "summary",
          "text": "An unauthorized remote attacker may be able to log in to the CPU module by obtaining credentials other than password.",
          "title": "Vulnerability Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-0001",
          "CSAFPID-0002",
          "CSAFPID-0003",
          "CSAFPID-0004",
          "CSAFPID-0005",
          "CSAFPID-0006",
          "CSAFPID-0007",
          "CSAFPID-0008"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "web.nvd.nist.gov",
          "url": "http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2021-20599"
        },
        {
          "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:H/I:H/A:N"
        },
        {
          "category": "external",
          "summary": "www.first.org",
          "url": "https://www.first.org/cvss/calculator/4.0#CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:H/SI:H/SA:N"
        }
      ],
      "remediations": [
        {
          "category": "mitigation",
          "details": "Mitsubishi Electric has prepared the following countermeasures:",
          "product_ids": [
            "CSAFPID-0001",
            "CSAFPID-0002",
            "CSAFPID-0003",
            "CSAFPID-0004",
            "CSAFPID-0005",
            "CSAFPID-0006",
            "CSAFPID-0007",
            "CSAFPID-0008"
          ]
        },
        {
          "category": "mitigation",
          "details": "MELSEC iQ-R series Safety CPU R08/16/32/120SFCPU: Firmware versions \"27\" or later",
          "product_ids": [
            "CSAFPID-0001",
            "CSAFPID-0002",
            "CSAFPID-0003",
            "CSAFPID-0004",
            "CSAFPID-0005",
            "CSAFPID-0006",
            "CSAFPID-0007",
            "CSAFPID-0008"
          ]
        },
        {
          "category": "mitigation",
          "details": "MELSEC iQ-R series SIL2 Process CPU R08/16/32/120PSFCPU:  Firmware versions \"12\" or later",
          "product_ids": [
            "CSAFPID-0001",
            "CSAFPID-0002",
            "CSAFPID-0003",
            "CSAFPID-0004",
            "CSAFPID-0005",
            "CSAFPID-0006",
            "CSAFPID-0007",
            "CSAFPID-0008"
          ]
        },
        {
          "category": "mitigation",
          "details": "Customers using the affected products and versions may take measures through mitigations and workarounds.  Mitsubishi Electric has released the fixed version as shown above, but updating the product to the fixed version is not available.  Mitsubishi Electric recommends users take the following mitigation measures to minimize risk associated with this vulnerability:",
          "product_ids": [
            "CSAFPID-0001",
            "CSAFPID-0002",
            "CSAFPID-0003",
            "CSAFPID-0004",
            "CSAFPID-0005",
            "CSAFPID-0006",
            "CSAFPID-0007",
            "CSAFPID-0008"
          ]
        },
        {
          "category": "mitigation",
          "details": "Use a firewall or virtual private network (VPN) 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"
          ]
        },
        {
          "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"
          ]
        },
        {
          "category": "mitigation",
          "details": "Use the IP filter function to restrict the accessible IP addresses.",
          "product_ids": [
            "CSAFPID-0001",
            "CSAFPID-0002",
            "CSAFPID-0003",
            "CSAFPID-0004",
            "CSAFPID-0005",
            "CSAFPID-0006",
            "CSAFPID-0007",
            "CSAFPID-0008"
          ]
        },
        {
          "category": "mitigation",
          "details": "Please refer to the Mitsubishi Electric advisory for further details.",
          "product_ids": [
            "CSAFPID-0001",
            "CSAFPID-0002",
            "CSAFPID-0003",
            "CSAFPID-0004",
            "CSAFPID-0005",
            "CSAFPID-0006",
            "CSAFPID-0007",
            "CSAFPID-0008"
          ],
          "url": "https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-011_en.pdf"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 9.1,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-0001",
            "CSAFPID-0002",
            "CSAFPID-0003",
            "CSAFPID-0004",
            "CSAFPID-0005",
            "CSAFPID-0006",
            "CSAFPID-0007",
            "CSAFPID-0008"
          ]
        }
      ]
    }
  ]
}


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