CVE-2020-28209 : Exploit Details and Defense Strategies

A CWE-428 Windows Unquoted Search Path vulnerability exists in EcoStruxure Building Operation Enterprise Server installer V1.9 - V3.1 and Enterprise Central installer V2.0 - V3.1 that could allow local Windows users to gain elevated privileges.

Understanding CVE-2020-28209

This CVE involves a security vulnerability in Schneider Electric's EcoStruxure Building Operation Enterprise Server and Enterprise Central installers.

What is CVE-2020-28209?

The CVE-2020-28209 vulnerability is related to a Windows Unquoted Search Path issue in the mentioned installers. It enables a local Windows user with specific permissions to escalate their privileges.

The Impact of CVE-2020-28209

The vulnerability could potentially allow an attacker to gain the privileges of the user who initiated the service, leading to unauthorized access and potential system compromise.

Technical Details of CVE-2020-28209

This section provides more in-depth technical insights into the CVE.

Vulnerability Description

The vulnerability arises from an unquoted search path issue in the EcoStruxure Building Operation Enterprise Server and Enterprise Central installers.

Affected Systems and Versions

EcoStruxure Building Operation Enterprise Server installer V1.9 - V3.1
Enterprise Central installer V2.0 - V3.1

Exploitation Mechanism

The vulnerability can be exploited by a local Windows user with write permissions on specific subfolders of the Connect Agent service binary path.

Mitigation and Prevention

Protecting systems from CVE-2020-28209 requires immediate actions and long-term security measures.

Immediate Steps to Take

Ensure the EcoStruxure Building Operation Enterprise Server and Enterprise Central are installed in secure locations that require Administrator privileges.
Regularly monitor and restrict user permissions to prevent unauthorized access.

Long-Term Security Practices

Implement the principle of least privilege to limit user access rights.
Conduct regular security audits and vulnerability assessments to identify and address potential risks.

Patching and Updates

Apply patches and updates provided by Schneider Electric to address the CVE-2020-28209 vulnerability.