CVE-2023-27976 Explained : Impact and Mitigation

This CVE record was assigned by Schneider Electric and published on April 18, 2023. The vulnerability affects Schneider Electric's EcoStruxure Control Expert software versions 15.1 and above, potentially leading to remote code execution.

Understanding CVE-2023-27976

This section delves into the details of CVE-2023-27976, shedding light on the nature of the vulnerability and its potential impact.

What is CVE-2023-27976?

CVE-2023-27976 is categorized as CWE-668: Exposure of Resource to Wrong Sphere vulnerability. It introduces the risk of remote code execution when a legitimate user interacts with a malicious link provided through web endpoints.

The Impact of CVE-2023-27976

With a base severity rating of "HIGH" and an 8.8 CVSSv3.1 base score, this vulnerability poses a significant threat. It can lead to high impacts on confidentiality, integrity, and availability, potentially allowing attackers to execute remote code without requiring any special privileges.

Technical Details of CVE-2023-27976

This section provides an overview of the technical aspects of CVE-2023-27976, including the vulnerability description, affected systems, and exploitation mechanism.

Vulnerability Description

The vulnerability arises from the exposure of resources to an incorrect sphere, enabling attackers to trigger remote code execution by enticing valid users to click on malicious links via web endpoints.

Affected Systems and Versions

Schneider Electric's EcoStruxure Control Expert software versions 15.1 and above are impacted by CVE-2023-27976, making them susceptible to the exploitation of this vulnerability.

Exploitation Mechanism

Attackers can exploit this vulnerability by enticing legitimate users to visit a malicious link through web endpoints. Upon interaction with the malicious content, remote code execution can be initiated, potentially leading to severe consequences.

Mitigation and Prevention

To safeguard systems against CVE-2023-27976, prompt action is necessary. Implementing the following measures can help mitigate the risks associated with this vulnerability.

Immediate Steps to Take

Ensure all EcoStruxure Control Expert installations are updated to the latest patched versions.
Educate users about the risks of interacting with unknown or suspicious links.
Monitor network traffic for any signs of potential exploitation attempts.

Long-Term Security Practices

Conduct regular security assessments and penetration testing to identify and address vulnerabilities promptly.
Implement proper network segmentation and access controls to limit the impact of potential attacks.
Stay informed about security updates and patches released by Schneider Electric for EcoStruxure Control Expert.

Patching and Updates

Schneider Electric has likely provided patches or updates to address CVE-2023-27976. It is crucial for organizations to apply these patches promptly to mitigate the associated risks and enhance the security posture of their systems.