10 September 2024
Overview
Schneider Electric is aware of a vulnerability in its Vijeo Designer product. The Vijeo Designer product is HMI Configuration Software compatible with Harmony and Magelis HMI. Vijeo Designer software offers functions such as multimedia capabilities and remote access for more efficiency.
Failure to apply the remediations provided below may risk privilege escalation, which could result in unauthorized access to workstation resources.

Affected Products and Versions

Vulnerability Details
CVE ID: CVE-2024-8306
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-269: Improper Privilege Management vulnerability exists that could cause unauthorized
access, loss of confidentiality, integrity and availability of the workstation when non-admin
authenticated user tries to perform privilege escalation by tampering with the binaries.


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. If customers choose not to apply the remediation provided above, they should immediately apply the following mitigations to reduce the risk of exploit:

Mitigations

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 refer to the Schneider Electric Recommended Cybersecurity Best
Practices document.

Acknowledgements
Schneider Electric recognizes the following researcher for identifying and helping to coordinate
a response to this vulnerability:

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, contactmyour 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

Source:

https://download.schneider-electric.com/doc/SEVD-2024-254-01/SEVD-2024-254-01.pdf