9 April 2024
Overview
Schneider Electric is aware of a vulnerability in its Easergy Studio product.
The Easergy Studio product is a software solution for configuring, monitoring, and managing
control devices.
Failure to apply the provided remediation below may risk unquoted search paths, which could
result in escalation of privilege.
Affected Products and Versions
Vulnerability Details
CVE ID: CVE-2024-2747
CVSS v3.1 Base Score 7.8 | High | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE-428: Unquoted search path or element vulnerability exists in Easergy Studio, which could
cause privilege escalation when a valid user replaces a trusted file name on the system and
reboots the machine.
Note regarding vulnerability details: The severity of vulnerabilities was calculated using the
CVSS Base metrics in version 3.1 (CVSS v3.1) without incorporating the Temporal and
Environmental metrics. Schneider Electric recommends that customers score the CVSS
Environmental metrics, which are specific to end-user organizations, and consider factors such
as the presence of mitigations in that environment. Environmental metrics may refine the
relative severity posed by the vulnerabilities described in this document within a customer’s
environment.
Remediation
Customers should use appropriate patching methodologies when applying these patches to
their systems. We strongly recommend the use of back-ups and evaluating the impact of these
patches 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.
To ensure you are informed of all updates, including details on affected products and
remediation plans, subscribe to Schneider Electric’s security notification service here:
https://www.se.com/en/work/support/cybersecurity/security-notifications.jsp
General Security Recommendations
We strongly recommend the following industry cybersecurity best practices.
- 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
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
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