ICSA-23-017-02

Vulnerability from csaf_cisa - Published: 2023-01-17 00:00 - Updated: 2023-01-27 00:00
Summary
Mitsubishi Electric MELSEC iQ-F, iQ-R Series
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
Product Notice: These products are available in limited regions.
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/.
Update Summary: This updated advisory is a follow-up to the original advisory titled ICSA-23-017-02 Mitsubishi Electric MELSEC iQ-F, iQ-R Series (Update A) that was published January 17, 2023, on the ICS webpage on cisa.gov/ICS.
Risk evaluation: Successful exploitation of this vulnerability could allow an attacker to access the WEB server function by guessing the random numbers used for authentication.
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 these vulnerabilities.
Recommended Practices: 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 at 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: 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: CISA also recommends users take the following measures to protect themselves from social engineering attacks: Do not click web links or open unsolicited attachments in email messages; Refer to Recognizing and Avoiding Email Scams (https://us-cert.cisa.gov/sites/default/files/publications/emailscams_0905.pdf) for more information on avoiding email scams; Refer to Avoiding Social Engineering and Phishing Attacks (https://us-cert.cisa.gov/ncas/tips/ST04-014) for more information on social engineering attacks.
Recommended Practices: Do not click web links or open attachments in unsolicited email messages.
Recommended Practices: Refer to Recognizing and Avoiding Email Scams for more information on avoiding email scams.
Recommended Practices: Refer to Avoiding Social Engineering and Phishing Attacks for more information on social engineering attacks.
Recommended Practices: No known public exploits specifically target this vulnerability. This vulnerability has a high attack complexity.
CVE-2022-40267
5.9 (Medium)
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
CWE-337 - Predictable Seed in Pseudo-Random Number Generator (PRNG)
Mitigation MELSEC iQ-F Series with serial number 17X**** or later: FX5U-xMy/z x=32,64,80, y=T,R, z=ES,DS,ESS,DSS: Update to v1.281 or later FX5UC-xMy/z x=32,64,96 y=T, z=D,DSS: Update to v1.281 or later https://www.mitsubishielectric.com/fa/download/in…
Mitigation FX5U-xMy/z x=32,64,80, y=T,R, z=ES,DS,ESS,DSS: Update to v1.281 or later https://www.mitsubishielectric.com/fa/download/in…
Mitigation FX5UC-xMy/z x=32,64,96 y=T, z=D,DSS: Update to v1.281 or later https://www.mitsubishielectric.com/fa/download/in…
Mitigation MELSEC iQ-F Series with serial number 179**** and prior: FX5U-xMy/z x=32,64,80, y=T,R, z=ES,DS,ESS,DSS: Update to v1.075 or later FX5UC-xMy/z x=32,64,96 y=T, z=D,DSS: Update to v1.075 or later https://www.mitsubishielectric.com/fa/download/in…
Mitigation FX5U-xMy/z x=32,64,80, y=T,R, z=ES,DS,ESS,DSS: Update to v1.075 or later https://www.mitsubishielectric.com/fa/download/in…
Mitigation FX5UC-xMy/z x=32,64,96 y=T, z=D,DSS: Update to v1.075 or later https://www.mitsubishielectric.com/fa/download/in…
Mitigation MELSEC iQ-F Series FX5UC-32MT/DS-TS, FX5UC-32MT/DSS-TS, FX5UC-32MR/DS-TS: Update to v1.281 or later https://www.mitsubishielectric.com/fa/download/in…
Mitigation FX5UJ-xMy/z x=24,40,60, y=T,R, z=ES,ESS: Update to v1.044 or later
Mitigation FX5UJ-xMy/ES-A* x=24,40,60, y=T,R: Update to v1.045 or later
Mitigation FX5S-xMy/z* x=30,40,60,80, y=T,R, z=ES,ESS: Update to v1.004 or later
Mitigation Note: These products are available in limited regions. For how to get the fixed version, users should contact Mitsubishi Electric.
Mitigation "5 FIRMWARE UPDATE FUNCTION" in the MELSEC iQ-F FX5 User's Manual (Application) https://www.mitsubishielectric.com/app/fa/downloa…
Mitigation Use a firewall or virtual private network (VPN), etc. to prevent unauthorized access when internet access is required.
Mitigation Use products inside a local area network (LAN) and block access from untrusted networks and hosts through firewalls.
Mitigation Use the IP filter function* to block access from untrusted hosts. For details on the IP filter function, refer to the manuals for each product: "12.1 IP Filter Function" in the MELSEC iQ-F FX5 User's Manual (Ethernet Communication) "1.13 Security" - "IP filter" in the MELSEC iQ-R Ethernet User's Manual (Application)
Mitigation "12.1 IP Filter Function" in the MELSEC iQ-F FX5 User's Manual (Ethernet Communication)
Mitigation "1.13 Security" - "IP filter" in the MELSEC iQ-R Ethernet User's Manual (Application)
References
Acknowledgments
Cisco Talos Matt Wiseman
To clipboard 

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      "cwe": {
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        "name": "Predictable Seed in Pseudo-Random Number Generator (PRNG)"
      },
      "notes": [
        {
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          "text": "Mitsubishi Electric MELSEC iQ-F and iQ-R Series products both contain an authentication bypass vulnerability in the WEB server function due to predictable seed in the pseudo-random number generator. CVE-2022-40267 has been assigned to this vulnerability. A CVSS v3 base score of 5.9 has been assigned; the CVSS vector string is (AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N).",
          "title": "Vulnerability Summary"
        }
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        }
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            "CSAFPID-0006",
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            "CSAFPID-00010"
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            "CSAFPID-0005",
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            "CSAFPID-0007",
            "CSAFPID-0008",
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            "CSAFPID-00010"
          ],
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            "CSAFPID-0002",
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            "CSAFPID-0004",
            "CSAFPID-0005",
            "CSAFPID-0006",
            "CSAFPID-0007",
            "CSAFPID-0008",
            "CSAFPID-0009",
            "CSAFPID-00010"
          ],
          "url": "https://www.mitsubishielectric.com/fa/download/index.html"
        },
        {
          "category": "mitigation",
          "details": "MELSEC iQ-F Series FX5UC-32MT/DS-TS, FX5UC-32MT/DSS-TS, FX5UC-32MR/DS-TS: Update to v1.281 or later",
          "product_ids": [
            "CSAFPID-0001",
            "CSAFPID-0002",
            "CSAFPID-0003",
            "CSAFPID-0004",
            "CSAFPID-0005",
            "CSAFPID-0006",
            "CSAFPID-0007",
            "CSAFPID-0008",
            "CSAFPID-0009",
            "CSAFPID-00010"
          ],
          "url": "https://www.mitsubishielectric.com/fa/download/index.html"
        },
        {
          "category": "mitigation",
          "details": "FX5UJ-xMy/z x=24,40,60, y=T,R, z=ES,ESS: Update to v1.044 or later",
          "product_ids": [
            "CSAFPID-0001",
            "CSAFPID-0002",
            "CSAFPID-0003",
            "CSAFPID-0004",
            "CSAFPID-0005",
            "CSAFPID-0006",
            "CSAFPID-0007",
            "CSAFPID-0008",
            "CSAFPID-0009",
            "CSAFPID-00010"
          ]
        },
        {
          "category": "mitigation",
          "details": "FX5UJ-xMy/ES-A* x=24,40,60, y=T,R: Update to v1.045 or later",
          "product_ids": [
            "CSAFPID-0001",
            "CSAFPID-0002",
            "CSAFPID-0003",
            "CSAFPID-0004",
            "CSAFPID-0005",
            "CSAFPID-0006",
            "CSAFPID-0007",
            "CSAFPID-0008",
            "CSAFPID-0009",
            "CSAFPID-00010"
          ]
        },
        {
          "category": "mitigation",
          "details": "FX5S-xMy/z* x=30,40,60,80, y=T,R, z=ES,ESS: Update to v1.004 or later",
          "product_ids": [
            "CSAFPID-0001",
            "CSAFPID-0002",
            "CSAFPID-0003",
            "CSAFPID-0004",
            "CSAFPID-0005",
            "CSAFPID-0006",
            "CSAFPID-0007",
            "CSAFPID-0008",
            "CSAFPID-0009",
            "CSAFPID-00010"
          ]
        },
        {
          "category": "mitigation",
          "details": "Note: These products are available in limited regions. For how to get the fixed version, users should contact Mitsubishi Electric.",
          "product_ids": [
            "CSAFPID-0001",
            "CSAFPID-0002",
            "CSAFPID-0003",
            "CSAFPID-0004",
            "CSAFPID-0005",
            "CSAFPID-0006",
            "CSAFPID-0007",
            "CSAFPID-0008",
            "CSAFPID-0009",
            "CSAFPID-00010"
          ]
        },
        {
          "category": "mitigation",
          "details": "\"5 FIRMWARE UPDATE FUNCTION\" in the MELSEC iQ-F FX5 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-00010"
          ],
          "url": "https://www.mitsubishielectric.com/app/fa/download/search.do?kisyu=/plcf\u0026mode=manual"
        },
        {
          "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-00010"
          ]
        },
        {
          "category": "mitigation",
          "details": "Use products inside a local area network (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-00010"
          ]
        },
        {
          "category": "mitigation",
          "details": "Use the IP filter function* to block access from untrusted hosts.  For details on the IP filter function, refer to the manuals for each product: \"12.1 IP Filter Function\" in the MELSEC iQ-F FX5 User\u0027s Manual (Ethernet Communication)  \"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",
            "CSAFPID-0009",
            "CSAFPID-00010"
          ]
        },
        {
          "category": "mitigation",
          "details": "\"12.1 IP Filter Function\" in the MELSEC iQ-F FX5 User\u0027s Manual (Ethernet Communication)",
          "product_ids": [
            "CSAFPID-0001",
            "CSAFPID-0002",
            "CSAFPID-0003",
            "CSAFPID-0004",
            "CSAFPID-0005",
            "CSAFPID-0006",
            "CSAFPID-0007",
            "CSAFPID-0008",
            "CSAFPID-0009",
            "CSAFPID-00010"
          ]
        },
        {
          "category": "mitigation",
          "details": "\"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",
            "CSAFPID-0009",
            "CSAFPID-00010"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 5.9,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N",
            "version": "3.0"
          },
          "products": [
            "CSAFPID-0001",
            "CSAFPID-0002",
            "CSAFPID-0003",
            "CSAFPID-0004",
            "CSAFPID-0005",
            "CSAFPID-0006",
            "CSAFPID-0007",
            "CSAFPID-0008",
            "CSAFPID-0009",
            "CSAFPID-00010"
          ]
        }
      ]
    }
  ]
}


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Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.