Vulnerability-Lookup

SEVD-2020-343-07

Vulnerability from csaf_se - Published: 2020-12-08 05:49 - Updated: 2022-09-13 05:49

Summary

SNMP Service on Modicon M340 and Associated Communication Modules

Notes

General Security Recommendations

We strongly recommend the following industry cybersecurity best practices. https://www.se.com/us/en/download/document/7EN52-0390/ * Locate control and safety system networks and remote devices behind firewalls and isolate them from the business network. * Install physical controls so no unauthorized personnel can access your industrial control and safety systems, components, peripheral equipment, and networks. * Place all controllers in locked cabinets and never leave them in the “Program” mode. * Never connect programming software to any network other than the network intended for that device. * Scan all methods of mobile data exchange with the isolated network such as CDs, USB drives, etc. before use in the terminals or any node connected to these networks. * Never allow mobile devices that have connected to any other network besides the intended network to connect to the safety or control networks without proper sanitation. * Minimize network exposure for all control system devices and systems and ensure that they are not accessible from the Internet. * When remote access is required, use secure methods, such as Virtual Private Networks (VPNs). Recognize that VPNs may have vulnerabilities and should be updated to the most current version available. Also, understand that VPNs are only as secure as the connected devices. For more information refer to the Schneider Electric Recommended Cybersecurity Best Practices document.

For More Information

This document provides an overview of the identified vulnerability or vulnerabilities and actions required to mitigate. For more details and assistance on how to protect your installation, contact your local Schneider Electric representative or Schneider Electric Industrial Cybersecurity Services: https://www.se.com/ww/en/work/solutions/cybersecurity/. These organizations will be fully aware of this situation and can support you through the process. For further information related to cybersecurity in Schneider Electric’s products, visit the company’s cybersecurity support portal page: https://www.se.com/ww/en/work/support/cybersecurity/overview.jsp

LEGAL DISCLAIMER

THIS NOTIFICATION DOCUMENT, THE INFORMATION CONTAINED HEREIN, AND ANY MATERIALS LINKED FROM IT (COLLECTIVELY, THIS “NOTIFICATION”) ARE INTENDED TO HELP PROVIDE AN OVERVIEW OF THE IDENTIFIED SITUATION AND SUGGESTED MITIGATION ACTIONS, REMEDIATION, FIX, AND/OR GENERAL SECURITY RECOMMENDATIONS AND IS PROVIDED ON AN “AS-IS” BASIS WITHOUT WARRANTY OR GUARANTEE OF ANY KIND. SCHNEIDER ELECTRIC DISCLAIMS ALL WARRANTIES RELATING TO THIS NOTIFICATION, EITHER EXPRESS OR IMPLIED, INCLUDING WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. SCHNEIDER ELECTRIC MAKES NO WARRANTY THAT THE NOTIFICATION WILL RESOLVE THE IDENTIFIED SITUATION. IN NO EVENT SHALL SCHNEIDER ELECTRIC BE LIABLE FOR ANY DAMAGES OR LOSSES WHATSOEVER IN CONNECTION WITH THIS NOTIFICATION, INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF SCHNEIDER ELECTRIC HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. YOUR USE OF THIS NOTIFICATION IS AT YOUR OWN RISK, AND YOU ARE SOLELY LIABLE FOR ANY DAMAGES TO YOUR SYSTEMS OR ASSETS OR OTHER LOSSES THAT MAY RESULT FROM YOUR USE OF THIS NOTIFICATION. SCHNEIDER ELECTRIC RESERVES THE RIGHT TO UPDATE OR CHANGE THIS NOTIFICATION AT ANY TIME AND IN ITS SOLE DISCRETION

About Schneider Electric

At Schneider, we believe access to energy and digital is a basic human right. We empower all to do more with less, ensuring Life Is On everywhere, for everyone, at every moment. We provide energy and automation digital solutions for efficiency and sustainability. We combine world-leading energy technologies, real-time automation, software and services into integrated solutions for Homes, Buildings, Data Centers, Infrastructure and Industries. We are committed to unleash the infinite possibilities of an open, global, innovative community that is passionate with our Meaningful Purpose, Inclusive and Empowered values. www.se.com

Overview

Schneider Electric is aware of a vulnerability in the Modicon M340 offer and associated communication modules. Modicon M340 Programable Automation Controllers are used in industrial processes and infrastructure control. Failure to apply the remediations provided below may risk unexpected modification of network parameters, which could result in making targeted devices unreachable. September 2022 update: A remediation is available for Modicon M340 X80 Ethernet Communication module BMXNOC0401.

JSON

To clipboard

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        "title": "LEGAL DISCLAIMER"
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        "text": "At Schneider, we believe access to energy and digital is a basic human right. We empower all to do more with less, ensuring Life Is On everywhere, for everyone, at every moment.\n\nWe provide energy and automation digital solutions for efficiency and sustainability. We combine world-leading energy technologies, real-time automation, software and services into integrated solutions for Homes, Buildings, Data Centers, Infrastructure and Industries.\n\nWe are committed to unleash the infinite possibilities of an open, global, innovative community that is passionate with our Meaningful Purpose, Inclusive and Empowered values.\n\nwww.se.com ",
        "title": "About Schneider Electric"
      },
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        "text": "Schneider Electric is aware of a vulnerability in the Modicon M340 offer and associated communication modules.\r\nModicon M340 Programable Automation Controllers are used in industrial processes and infrastructure control.\r\nFailure to apply the remediations provided below may risk unexpected modification of network parameters, which could result in making targeted devices unreachable.\r\nSeptember 2022 update: A remediation is available for Modicon M340 X80 Ethernet Communication module BMXNOC0401.",
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  "vulnerabilities": [
    {
      "acknowledgments": [
        {
          "organization": "VAPT Team (C3i IITK, UP, India)"
        }
      ],
      "cve": "CVE-2020-7536",
      "cwe": {
        "id": "CWE-754",
        "name": "Improper Check for Unusual or Exceptional Conditions"
      },
      "notes": [
        {
          "category": "description",
          "text": "A CWE-754: Improper Check for Unusual or Exceptional Conditions vulnerability exists that could cause the device to be unreachable when doing an unattended modification of network parameters over SNMP.",
          "title": "CVE Description"
        }
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          "10"
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          "3",
          "5",
          "7",
          "9"
        ]
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      "remediations": [
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          "details": "Firmware V3.4 is available for download below: https://www.se.com/ww/en/download/document/BMXNOE010 Exec and Release Notes/",
          "product_ids": [
            "3"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://www.se.com/ww/en/download/document/BMXNOE010ExecandReleaseNotes/"
        },
        {
          "category": "vendor_fix",
          "details": "Firmware V6.6 is available for download below: https://www.se.com/ww/en/download/document/BMXNOE0110 Exec and Release Notes/",
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          "restart_required": {
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        },
        {
          "category": "vendor_fix",
          "details": "Firmware V3.30 is available for all the product references. Follow this link and find the right firmware file based on model used:\r\nhttps://www.se.com/ww/en/product-range/1468-modicon-m340/?parent-subcategory-id=3950",
          "product_ids": [
            "1"
          ],
          "restart_required": {
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        },
        {
          "category": "vendor_fix",
          "details": "Firmware V1.7 IR22 is available for download below: https://www.se.com/ww/en/download/document/BMXNOR0200H_FW/",
          "product_ids": [
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          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://www.se.com/ww/en/download/document/BMXNOR0200H_FW/"
        },
        {
          "category": "vendor_fix",
          "details": "Firmware V2.11 is available for download below: https://www.se.com/ww/en/product/BMXNOC0401/",
          "product_ids": [
            "9"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://www.se.com/ww/en/product/BMXNOC0401/"
        },
        {
          "category": "mitigation",
          "details": "If customers choose not to apply the remediation provided above, they should immediately apply the following mitigations to reduce the risk of exploit:\r\n\u2022 Setup network segmentation and implement a firewall to block all unauthorized access to port 161/UDP 162/UDP.",
          "product_ids": [
            "9"
          ],
          "restart_required": {
            "category": "none"
          }
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.0"
          },
          "products": [
            "1",
            "3",
            "5",
            "7",
            "9"
          ]
        }
      ],
      "title": "CVE-2020-7536"
    }
  ]
}

CVE-2020-7536 (GCVE-0-2020-7536)

Vulnerability from cvelistv5 – Published: 2020-12-11 00:46 – Updated: 2024-08-04 09:33

Summary

A CWE-754:Improper Check for Unusual or Exceptional Conditions vulnerability exists in Modicon M340 CPUs (BMXP34* versions prior to V3.30) Modicon M340 Communication Ethernet modules (BMXNOE0100 (H) versions prior to V3.4 BMXNOE0110 (H) versions prior to V6.6 BMXNOR0200H all versions), that could cause the device to be unreachable when modifying network parameters over SNMP.

Severity ?

No CVSS data available.

CWE

CWE-754 - Improper Check for Unusual or Exceptional Conditions

Assigner

schneider

References

URL

Tags

	https://security.cse.iitk.ac.in/responsible-disclosure	x_refsource_MISC
	https://www.se.com/ww/en/download/document/SEVD-2…	x_refsource_CONFIRM

Impacted products

	Vendor	Product	Version
	n/a	Modicon M340 CPUs (BMXP34* versions prior to V3.30) and Modicon M340 Communication Ethernet modules (BMXNOE0100 (H) versions prior to V3.4, BMXNOE0110 (H) versions prior to V6.6, and BMXNOR0200H all versions)	Affected: Modicon M340 CPUs (BMXP34* versions prior to V3.30) and Modicon M340 Communication Ethernet modules (BMXNOE0100 (H) versions prior to V3.4, BMXNOE0110 (H) versions prior to V6.6, and BMXNOR0200H all versions)

Show details on NVD website

JSON

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          "reference_data": [
            {
              "name": "https://security.cse.iitk.ac.in/responsible-disclosure",
              "refsource": "MISC",
              "url": "https://security.cse.iitk.ac.in/responsible-disclosure"
            },
            {
              "name": "https://www.se.com/ww/en/download/document/SEVD-2020-343-07/",
              "refsource": "CONFIRM",
              "url": "https://www.se.com/ww/en/download/document/SEVD-2020-343-07/"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "076d1eb6-cfab-4401-b34d-6dfc2a413bdb",
    "assignerShortName": "schneider",
    "cveId": "CVE-2020-7536",
    "datePublished": "2020-12-11T00:46:18",
    "dateReserved": "2020-01-21T00:00:00",
    "dateUpdated": "2024-08-04T09:33:19.463Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

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.

Action not permitted

SEVD-2020-343-07

CVE-2020-7536 (GCVE-0-2020-7536)

Tags

Sightings

Nomenclature