SEVD-2022-221-04
Vulnerability from csaf_se - Published: 2022-08-09 08:15 - Updated: 2024-08-13 00:00Summary
Modicon PAC Controllers
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 its Modicon PAC Controllers.
Modicon PLCs (Programmable Logic Controllers) and PACs (Programmable Automation Controllers) control and monitor industrial operations in a sustainable, flexible, efficient and protected way.
Failure to apply the remediations provided below may risk read access to memory content of the controllers, which could result in exposure of sensitive information such as application password hash and project data to the attacker.
September 2022 Update: The version number for Modicon M580 that addresses these vulnerabilities has been updated from V4.01 to V4.02.
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"text": "We strongly recommend the following industry cybersecurity best practices.\n\nhttps://www.se.com/us/en/download/document/7EN52-0390/\n* Locate control and safety system networks and remote devices behind firewalls and isolate them from the business network.\n* Install physical controls so no unauthorized personnel can access your industrial control and safety systems, components, peripheral equipment, and networks.\n* Place all controllers in locked cabinets and never leave them in the \u201cProgram\u201d mode.\n* Never connect programming software to any network other than the network intended for that device.\n* 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.\n* 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.\n* Minimize network exposure for all control system devices and systems and ensure that they are not accessible from the Internet.\n* 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.\nFor more information refer to the Schneider Electric Recommended Cybersecurity Best Practices document. \n",
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"title": "About Schneider Electric"
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{
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"text": "Schneider Electric is aware of a vulnerability in its Modicon PAC Controllers.\nModicon PLCs (Programmable Logic Controllers) and PACs (Programmable Automation Controllers) control and monitor industrial operations in a sustainable, flexible, efficient and protected way.\nFailure to apply the remediations provided below may risk read access to memory content of the controllers, which could result in exposure of sensitive information such as application password hash and project data to the attacker.\nSeptember 2022 Update: The version number for Modicon M580 that addresses these vulnerabilities has been updated from V4.01 to V4.02.",
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"tracking": {
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"revision_history": [
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"date": "2022-08-09T08:15:40.000Z",
"number": "1.0.0",
"summary": "Original Release"
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{
"date": "2022-09-06T08:15:40.000Z",
"number": "1.1.0",
"summary": "The version number for Modicon M580 that addresses these vulnerabilities has been updated from V4.01 to V4.02."
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{
"date": "2022-10-10T20:15:00.000Z",
"number": "2.0.0",
"summary": "A clarification was added to the list of affected products by splitting Modicon M580 and Modicon M580 Safety CPU ranges. The purpose of the notification update is to inform customers that the latest fix Modicon M580 V4.02 does not apply to the Safety range of M580. It is highly recommended that customers using Modicon M580 Safety ranges continue to implement the mitigations shared in this document"
},
{
"date": "2022-10-12T20:15:00.000Z",
"number": "3.0.0",
"summary": "The Modicon M580 SV4.02 firmware has been retracted for quality issues and is no longer available for download. Additional mitigations have been introduced for Modicon M580 CPU and M580 CPU Safety, and we urge customers to deploy these mitigations to further reduce the risk of potential exploitation of identified vulnerabilities."
},
{
"date": "2023-03-14T06:30:00.000Z",
"number": "4.0.0",
"summary": "Remediation for the Modicon M580 CPU is available for download (page 2)."
},
{
"date": "2023-03-14T06:30:00.000Z",
"number": "5.0.0",
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"status": "final",
"version": "5.0.0"
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"vulnerabilities": [
{
"acknowledgments": [
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"names": [
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],
"cve": "CVE-2021-22786",
"cwe": {
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"name": "Exposure of Sensitive Information to an Unauthorized Actor"
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"notes": [
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"text": "A CWE-200: Information Exposure vulnerability exists that could cause the exposure of sensitive information stored on the memory of the controller when communicating over the Modbus TCP protocol.",
"title": "CVE Description"
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],
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"remediations": [
{
"category": "vendor_fix",
"details": "Firmware V3.40 of Modicon includes a fix for this vulnerability and is available for download here: https://www.se.com/ww/en/download/document/BMXP34xxxxx_SV_xx.xx/",
"product_ids": [
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],
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},
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},
{
"category": "vendor_fix",
"details": "Firmware SV4.10 includes a fix for this vulnerability and is available for download here: https://www.se.com/ww/en/download/document/BMEx58x0x0_SV04.10/",
"product_ids": [
"3"
],
"restart_required": {
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"url": "https://www.se.com/ww/en/download/document/BMEx58x0x0_SV04.10/"
},
{
"category": "vendor_fix",
"details": "Firmware v1.70 includes a fix for this vulnerability and is available for download here:\nhttps://www.se.com/ww/en/download/document/BMKC80_Firmware_upgrade/",
"product_ids": [
"5"
],
"restart_required": {
"category": "none"
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"url": "https://www.se.com/ww/en/download/document/BMKC80_Firmware_upgrade/"
},
{
"category": "vendor_fix",
"details": "Firmware SV2.4 includes a fix for this vulnerability and is available for download here:\r\nhttps://www.se.com/ww/en/download/document/Momentum_FW_update/",
"product_ids": [
"7"
],
"restart_required": {
"category": "none"
},
"url": "https://www.se.com/ww/en/download/document/Momentum_FW_update/"
},
{
"category": "vendor_fix",
"details": "Firmware SV4.21 includes a fix for these vulnerabilities and is \r\navailable for download here: \r\nhttps://www.se.com/ww/en/product-range/62098-modicon-m580-epac-controller/#software-and-firmware\r\n Important: customer needs to use version of EcoStruxure\u2122 \r\nControl Expert V16.0 HF001 minimum to connect with the latest \r\nversion of M580 CPU Safety. The software is available for \r\ndownload here: tps://www.se.com/ww/en/product-range/548-ecostruxurecontrol-expert-unity-pro/#software-and-firmware",
"product_ids": [
"10"
],
"restart_required": {
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},
"url": "https://www.se.com/ww/en/product-range/62098-modicon-m580-epac-controller/#software-and-firmware"
},
{
"category": "no_fix_planned",
"details": "Schneider Electric\u2019s Modicon Quantum controllers have reached their end of life and are no longer commercially available. They have been replaced by the Modicon M580 ePAC controller, our current product offer.\r\nCustomers should strongly consider migrating to the Modicon M580 ePAC.\r\nPlease contact your local Schneider Electric technical support for more information.",
"product_ids": [
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"category": "mitigation",
"details": "\u2022 Setup an application password in the project properties\r\n\u2022 Setup network segmentation and implement a firewall to block all unauthorized access to port 502/TCP\r\n\u2022 Configure the Access Control List following the recommendations of the user manuals:\r\no \u201cModicon M580, Hardware, Reference Manual\u201d https://www.se.com/ww/en/download/document/EIO0000001578/\r\no \u201cModicon M340 for Ethernet Communications Modules and Processors User Manual\u201d in chapter \u201cMessaging Configuration Parameters\u201d: https://www.se.com/ww/en/download/document/31007131K01000/\r\no \u201cModicon MC80 Programmable Logic Controller (PLC) manual\u201d in the chapter \u201cAccess Control List (ACL)\u201d https://download.schneider-electric.com/files?p_enDocType=User+guide\u0026p_File_Name=EIO0000002071.02.pdf\u0026p_Doc_Ref=EIO0000002071\r\no \u201cMomentum for EcoStruxure\u2122 Control Expert - 171 CBU 78090, 171 CBU 98090, 171 CBU 98091 Processors\u201d manual in the chapter \u201cModbus Messaging and Access Control\u201d https://download.schneider-electric.com/files?p_enDocType=User+guide\u0026p_File_Name=HRB44124.08.pdf\u0026p_Doc_Ref=HRB44124\r\n\u2022 Setup a secure communication according to the following guideline \u201cModicon Controllers Platform Cyber Security Reference Manual,\u201d in chapter \u201cSetup secured communications\u201d: https://www.se.com/ww/en/download/document/EIO0000001999/\r\n\u2022 Use a BMENOC module and follow the instructions to configure IPSEC feature as described in the guideline \u201cModicon M580 - BMENOC03.1 Ethernet Communications Schneider Electric Security Notification Module, Installation and Configuration Guide\u201d in the chapter \u201cConfiguring IPSEC communications\u201d:\r\nhttps://www.se.com/ww/en/download/document/HRB62665/\r\n\u2022 Setup a VPN between the Modicon PLC controller and the engineering workstation containing EcoStruxure Control Expert or Process Expert. Note: this functionality may be provided by an external IPSEC compatible firewall located close to the controller.\r\nTo ensure you are informed of all updates, including details on affected products and remediation plans, subscribe to Schneider Electric\u2019s security notification service here:\r\nhttps://www.se.com/en/work/support/cybersecurity/security-notifications.jsp\r\n",
"product_ids": [
"1",
"5",
"7"
],
"restart_required": {
"category": "none"
},
"url": "https://www.se.com/ww/en/download/document/EIO0000001999/"
},
{
"category": "mitigation",
"details": "\u2022 Setup network segmentation and implement a firewall to block all unauthorized access to port 502/TCP\r\n\u2022 Configure the Access Control List feature as mentioned in \u201cQuantum using EcoStruxure\u2122 Control Expert - TCP/IP Configuration, User Manual\u201d in chapter \u201cSoftware Settings for Ethernet Communication / Messaging / Quantum NOE Ethernet Messaging Configuration\u201d: https://www.se.com/ww/en/download/document/33002467K01000/",
"product_ids": [
"9"
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"restart_required": {
"category": "none"
},
"url": "https://www.se.com/ww/en/download/document/33002467K01000/"
},
{
"category": "mitigation",
"details": "If customers choose not to apply the remediation then they are encouraged to immediately apply the following mitigations to reduce the risk of exploit: \u2022 Setup network segmentation and implement a firewall to block all unauthorized access to port 502/TCP. \u2022 Configure the Access Control List following the recommendations of the user manual \u201cModicon M580, Hardware, Reference Manual\u201d: https://www.se.com/ww/en/download/document/EIO0000001578/ \u2022 Setup a secure communication according to the following guideline \u201cModicon Controllers Platform Cyber Security Reference Manual,\u201d in chapter \u201cSetup secured communications\u201d: https://www.se.com/ww/en/download/document/EIO0000001999/ \u2022 Use a BMENUA0100 module and follow the instructions to configure IPSEC feature as described in the chapter \u201cConfiguring the BMENUA0100 Cybersecurity Settings\u201d: https://www.se.com/ww/en/download/document/PHA83350 \u2022 Use a BMENOC module and follow the instructions to configure IPSEC feature as described in the guideline \u201cModicon M580 \u2013 BMENOC03.1 Ethernet Communications Schneider Electric Security Notification Module, Installation and Configuration Guide\u201d in the chapter \u201cConfiguring IPSEC communications\u201d: https://www.se.com/ww/en/download/document/HRB62665/ To further reduce the attack surface on Modicon M580 CPU Safety: \u2022 Ensure the CPU is running in Safety mode and maintenance input is configured to maintain this Safety mode during operation \u2013 refer to the document Modicon M580 - Safety System Planning Guide - in the chapter \u201cOperating Mode Transitions\u201d: https://www.se.com/ww/en/download/document/QGH60283/",
"product_ids": [
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},
"url": "https://www.se.com/ww/en/download/document/EIO0000001999/"
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"environmentalScore": 7.5,
"environmentalSeverity": "HIGH",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"temporalScore": 7.5,
"temporalSeverity": "HIGH",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
"version": "3.1"
},
"products": [
"1",
"3",
"5",
"7",
"9",
"10"
]
}
],
"title": "CVE-2021-22786"
}
]
}
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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.
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