Schneider Electric Security Notification
Easergy P5
12 July 2022

Overview
Schneider Electric is aware of multiple vulnerabilities in its Easergy P5 product line.
The Easergy P5 is a medium voltage protection relay.
Failure to apply the mitigations or remediations provided below may risk disclosure of thedevice’s credentials, denial of service, device reboot, or an attacker could gain full control of therelay. This could result in loss of protection of your electrical network.

Affected Product and Versions
ProductVersion

Easergy P5

Firmware V01.401.102 and priorVulnerability Details
CVE ID: CVE-2022-34756
CVSS v3.1 Base Score 8.8 | High | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
A CWE-120: Buffer Copy without Checking Size of Input vulnerability exists that could result inremote code execution or the crash of HTTPs stack which is used for the device Web HMI.
CVE ID: CVE-2022-34757
CVSS v3.1 Base Score 6.7 | Medium | CVSS:3.1/AV:A/AC:H/PR:N/UI:R/S:U/C:L/I:H/A:H
A CWE-327: Use of a Broken or Risky Cryptographic Algorithm vulnerability exists where weak
cipher suites can be used for the SSH connection between Easergy Pro software and thedevice, which may allow an attacker to observe protected communication details.
CVE ID: CVE-2022-34758
CVSS v3.1 Base Score 5.1 | Medium | CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:L
A CWE-20: Improper Input Validation vulnerability exists that could cause the device watchdog
function to be disabled if the attacker had access to privileged user credentials.

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Document Reference Number – SEVD-2022-193-04

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Schneider Electric Security Notification
Remediation
Affected Product &Versions
Easergy P5
FirmwareV01.401.102 and prior

Remediation
V01.402.101 of the Easergy P5 Firmware includes a fix for thesevulnerabilities and is available on request from Schneider Electric’s
Customer Care Center.

Customers should use appropriate patching methodologies when applying these patches totheir systems. We strongly recommend the use of back-ups and evaluating the impact of thesepatches in a Test and Development environment or on an offline infrastructure. Contact
Schneider Electric’s Customer Care Center if you need assistance removing a patch.
If customers choose not to apply the remediation provided above, they should immediately
apply the following mitigations to reduce the risk of exploit:
CVE

Mitigation

CVE-2022-34756

Disable the device Web HMI by using the Easergy Pro to turn off theHTTPS server in the communication menu.
If the device firmware version is prior to V01.401.101, limit the useof Easergy Pro software to the front USB port. The option to disable
SSH on the rear Ethernet board is not yet available in this version ofthe firmware.

CVE-2022-34757

If the device firmware is V01.401.101 to V01.402.001:• Disable the SSH on the rear Ethernet port and use
only Easergy Pro on the front USB port.
• If you are using Easergy Pro software on the rear Ethernet
port, disable SSH on the rear Ethernet port when it is not inuse

CVE-2022-34758

Follow the General Security Recommendations below.

General Security Recommendations
We strongly recommend the following industry cybersecurity best practices.
•••

Locate control and safety system networks and remote devices behind firewalls andisolate 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.

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Schneider Electric Security Notification
••
•
•
•

Never connect programming software to any network other than the network for thedevices that it is intended for.
Scan all methods of mobile data exchange with the isolated network such as CDs, USBdrives, 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 theintended network to connect to the safety or control networks without proper sanitation.
Minimize network exposure for all control system devices and systems and ensure thatthey 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 themost current version available. Also, understand that VPNs are only as secure as theconnected devices.

For more information refer to the Schneider Electric Recommended Cybersecurity Best
Practices document.

Acknowledgements
Schneider Electric recognizes the following researchers for identifying and helping to coordinate
a response to these vulnerabilities:
VMT

Researchers

CVE-2022-34756

U.S. Department of Energy CyTRICS researcher McKade Umbenhower–INL

CVE-2022-34758

Timothée Chauvin, Paul Noalhyt, Yuanzhe Wu at Red Balloon Security

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 befully aware of this situation and can support you through the process.
For further information related to cybersecurity in Schneider Electric’s products, visit thecompany’s cybersecurity support portal page:https://www.se.com/ww/en/work/support/cybersecurity/overview.jsp
LEGAL DISCLAIMERTHIS NOTIFICATION DOCUMENT, THE INFORMATION CONTAINED HEREIN, AND ANY MATERIALSLINKED FROM IT (COLLECTIVELY, THIS “NOTIFICATION”) ARE INTENDED TO HELP PROVIDE AN
OVERVIEW OF THE IDENTIFIED SITUATION AND SUGGESTED MITIGATION ACTIONS,

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Schneider Electric Security Notification
REMEDIATION, FIX, AND/OR GENERAL SECURITY RECOMMENDATIONS AND IS PROVIDED ON AN“AS-IS” BASIS WITHOUT WARRANTY OR GUARANTEE OF ANY KIND. SCHNEIDER ELECTRICDISCLAIMS 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 THEIDENTIFIED SITUATION. IN NO EVENT SHALL SCHNEIDER ELECTRIC BE LIABLE FOR ANYDAMAGES OR LOSSES WHATSOEVER IN CONNECTION WITH THIS NOTIFICATION, INCLUDINGDIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIALDAMAGES, EVEN IF SCHNEIDER ELECTRIC HAS BEEN ADVISED OF THE POSSIBILITY OF SUCHDAMAGES. YOUR USE OF THIS NOTIFICATION IS AT YOUR OWN RISK, AND YOU ARE SOLELYLIABLE FOR ANY DAMAGES TO YOUR SYSTEMS OR ASSETS OR OTHER LOSSES THAT MAY
RESULT FROM YOUR USE OF THIS NOTIFICATION. SCHNEIDER ELECTRIC RESERVES THE RIGHTTO UPDATE OR CHANGE THIS NOTIFICATION AT ANY TIME AND IN ITS SOLE DISCRETION
About Schneider Electric
Schneider’s purpose is to empower all to make the most of our energy and resources, bridging progress andsustainability for all. We call this Life Is On.
Our mission is to be your digital partner for Sustainability and Efficiency.
We drive digital transformation by integrating world-leading process and energy technologies, end-point to cloudconnecting products, controls, software and services, across the entire lifecycle, enabling integrated company
management, for homes, buildings, data centers, infrastructure and industries.
We are the most local of global companies. We are advocates of open standards and partnership ecosystems thatare passionate about our shared Meaningful Purpose, Inclusive and Empowered values.

www.se.com

Revision Control:
Version 1.0
12 July 2022

Original Releasesigned by Product Security Office
Product Security Office DigitallyDate: 2022.07.11 11:30:48 -04'00'

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