icsa-24-044-01
Vulnerability from csaf_cisa
Published
2024-02-13 07:00
Modified
2024-05-16 06:00
Summary
Mitsubishi Electric MELSEC iQ-R Series Safety CPU and SIL2 Process CPU (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 non-administrator user to disclose the credentials (user ID and password) of a user with a lower access level than themselves.
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": [
          "Reid Wightman"
        ],
        "organization": "Dragos 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 non-administrator user to disclose the credentials (user ID and password) of a user with a lower access level than themselves.",
        "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-24-044-01 JSON",
        "url": "https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2024/icsa-24-044-01.json"
      },
      {
        "category": "self",
        "summary": "ICSA Advisory ICSA-24-044-01 - Web Version",
        "url": "https://www.cisa.gov/news-events/ics-advisories/icsa-24-044-01"
      },
      {
        "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"
      },
      {
        "category": "external",
        "summary": "Recommended Practices",
        "url": "https://www.cisa.gov/uscert/sites/default/files/publications/emailscams0905.pdf"
      },
      {
        "category": "external",
        "summary": "Recommended Practices",
        "url": "https://www.cisa.gov/uscert/ncas/tips/ST04-014"
      }
    ],
    "title": "Mitsubishi Electric MELSEC iQ-R Series Safety CPU and SIL2 Process CPU (Update A)",
    "tracking": {
      "current_release_date": "2024-05-16T06:00:00.000000Z",
      "generator": {
        "engine": {
          "name": "CISA CSAF Generator",
          "version": "1.0.0"
        }
      },
      "id": "ICSA-24-044-01",
      "initial_release_date": "2024-02-13T07:00:00.000000Z",
      "revision_history": [
        {
          "date": "2024-02-13T07:00:00.000000Z",
          "legacy_version": "Initial",
          "number": "1",
          "summary": "Initial Publication"
        },
        {
          "date": "2024-05-16T06:00:00.000000Z",
          "legacy_version": "Update A",
          "number": "2",
          "summary": "Update A - Additional workarounds for MELSEC iQ-R Series SIL2 Process CPU."
        }
      ],
      "status": "final",
      "version": "2"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:all/*",
                "product": {
                  "name": "Mitsubishi Electric MELSEC iQ-R Series Safety CPU R08SFCPU: vers:all/*",
                  "product_id": "CSAFPID-0001"
                }
              }
            ],
            "category": "product_name",
            "name": "MELSEC iQ-R Series Safety CPU R08SFCPU"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:all/*",
                "product": {
                  "name": "Mitsubishi Electric MELSEC iQ-R Series Safety CPU R16SFCPU: vers:all/*",
                  "product_id": "CSAFPID-0002"
                }
              }
            ],
            "category": "product_name",
            "name": "MELSEC iQ-R Series Safety CPU R16SFCPU"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:all/*",
                "product": {
                  "name": "Mitsubishi Electric MELSEC iQ-R Series Safety CPU R32SFCPU: vers:all/*",
                  "product_id": "CSAFPID-0003"
                }
              }
            ],
            "category": "product_name",
            "name": "MELSEC iQ-R Series Safety CPU R32SFCPU"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:all/*",
                "product": {
                  "name": "Mitsubishi Electric MELSEC iQ-R Series Safety CPU R120SFCPU: vers:all/*",
                  "product_id": "CSAFPID-0004"
                }
              }
            ],
            "category": "product_name",
            "name": "MELSEC iQ-R Series Safety CPU R120SFCPU"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:all/*",
                "product": {
                  "name": "Mitsubishi Electric MELSEC iQ-R Series SIL2 Process CPU R08PSFCPU: vers:all/*",
                  "product_id": "CSAFPID-0005"
                }
              }
            ],
            "category": "product_name",
            "name": "MELSEC iQ-R Series SIL2 Process CPU R08PSFCPU"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:all/*",
                "product": {
                  "name": "Mitsubishi Electric MELSEC iQ-R Series SIL2 Process CPU R16PSFCPU: vers:all/*",
                  "product_id": "CSAFPID-0006"
                }
              }
            ],
            "category": "product_name",
            "name": "MELSEC iQ-R Series SIL2 Process CPU R16PSFCPU"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:all/*",
                "product": {
                  "name": "Mitsubishi Electric MELSEC iQ-R Series SIL2 Process CPU R32PSFCPU: vers:all/*",
                  "product_id": "CSAFPID-0007"
                }
              }
            ],
            "category": "product_name",
            "name": "MELSEC iQ-R Series SIL2 Process CPU R32PSFCPU"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:all/*",
                "product": {
                  "name": "Mitsubishi Electric MELSEC iQ-R Series SIL2 Process CPU R120PSFCPU: vers:all/*",
                  "product_id": "CSAFPID-0008"
                }
              }
            ],
            "category": "product_name",
            "name": "MELSEC iQ-R Series SIL2 Process CPU R120PSFCPU"
          }
        ],
        "category": "vendor",
        "name": "Mitsubishi Electric"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2023-6815",
      "cwe": {
        "id": "CWE-266",
        "name": "Incorrect Privilege Assignment"
      },
      "notes": [
        {
          "category": "summary",
          "text": "Information disclosure vulnerability due to incorrect privilege assignment exists in MELSEC iQ-R Series Safety CPU and SIL2 Process CPU modules. After a remote attacker logs into the CPU module as a non-administrator user, the attacker may disclose the credentials (user ID and password) of a user with a lower access level than the attacker by sending a specially crafted packet.",
          "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-2023-6815"
        },
        {
          "category": "external",
          "summary": "www.first.org",
          "url": "https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/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:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N"
        }
      ],
      "remediations": [
        {
          "category": "mitigation",
          "details": "When the affected products are used in the following combinations, an attack can be prevented by enabling \"communicating with only the enhanced version of vulnerability management of GX Works3\" when writing user information to the CPU module:",
          "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 versions 27 or later used with GX Works3 versions 1.087R or later.",
          "product_ids": [
            "CSAFPID-0001",
            "CSAFPID-0002",
            "CSAFPID-0003",
            "CSAFPID-0004"
          ]
        },
        {
          "category": "mitigation",
          "details": "MELSEC iQ-R Series SIL2 Process CPU version 12 or later used with GX Works3 versions 1.105K or later.",
          "product_ids": [
            "CSAFPID-0005",
            "CSAFPID-0006",
            "CSAFPID-0007",
            "CSAFPID-0008"
          ]
        },
        {
          "category": "mitigation",
          "details": "Mitsubishi Electric recommends that users of MELSEC iQ-R Series Safety CPU (version 26 and prior) or MELSEC iQ-R Series SIL2 Process CPU (version 11 and prior) take the following mitigation measures to minimize the risk of exploiting this vulnerability because updating the product to the enhanced version of vulnerability management is not available:",
          "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), 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"
          ]
        },
        {
          "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 IP filter function to block access from untrusted hosts. For details on the IP filter function, please refer to the following manual for each product. \"1.13 Security\" - \"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"
          ]
        },
        {
          "category": "mitigation",
          "details": "Restrict physical access to the affected product as well as to the personal computers and the network devices that can communicate with it.",
          "product_ids": [
            "CSAFPID-0001",
            "CSAFPID-0002",
            "CSAFPID-0003",
            "CSAFPID-0004",
            "CSAFPID-0005",
            "CSAFPID-0006",
            "CSAFPID-0007",
            "CSAFPID-0008"
          ]
        },
        {
          "category": "mitigation",
          "details": "Install antivirus software on your personal computer that can access the affected product.",
          "product_ids": [
            "CSAFPID-0001",
            "CSAFPID-0002",
            "CSAFPID-0003",
            "CSAFPID-0004",
            "CSAFPID-0005",
            "CSAFPID-0006",
            "CSAFPID-0007",
            "CSAFPID-0008"
          ]
        },
        {
          "category": "mitigation",
          "details": "For specific update instructions and additional details, see Mitsubishi Electric advisory 2023-021..",
          "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/2023-021_en.pdf"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/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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