CVE-2023-2161 Explained : Impact and Mitigation

This CVE record was published on May 16, 2023, by Schneider Electric. The vulnerability affects the OPC Factory Server (OFS) product, specifically versions prior to V3.63SP2. It is categorized as a CWE-611: Improper Restriction of XML External Entity Reference vulnerability with a CVSS base score of 5, indicating a medium severity level.

Understanding CVE-2023-2161

This section delves into the details of CVE-2023-2161, outlining what the vulnerability entails and its potential impact on affected systems.

What is CVE-2023-2161?

CVE-2023-2161 is identified as a CWE-611 vulnerability, where improper restriction of XML external entity references could lead to unauthorized read access to the file system. This unauthorized access occurs when a malicious configuration file is loaded onto the software by a local user.

The Impact of CVE-2023-2161

The impact of this vulnerability is significant, as it allows attackers to gain unauthorized access to sensitive files on the affected system. The confidentiality of data is at high risk due to the potential unauthorized read access to the file system, highlighting the importance of addressing this issue promptly.

Technical Details of CVE-2023-2161

In this section, we will explore the vulnerability description, affected systems and versions, as well as the exploitation mechanism associated with CVE-2023-2161.

Vulnerability Description

The vulnerability in CVE-2023-2161 stems from the improper restriction of XML external entity references, enabling unauthorized read access to the file system when a malicious configuration file is loaded onto the software by a local user.

Affected Systems and Versions

The CVE affects the OPC Factory Server (OFS) product by Schneider Electric, specifically versions prior to V3.63SP2. Organizations using these impacted versions are vulnerable to exploitation if proper mitigation measures are not implemented.

Exploitation Mechanism

The exploitation of CVE-2023-2161 involves loading a malicious configuration file onto the software by a local user. This action triggers the unauthorized read access to the file system, paving the way for potential security breaches.

Mitigation and Prevention

Mitigating the risks associated with CVE-2023-2161 requires immediate action and the implementation of long-term security practices to safeguard affected systems from exploitation.

Immediate Steps to Take

Organizations should apply security patches or updates provided by Schneider Electric to address the vulnerability in versions prior to V3.63SP2.
Restrict access to sensitive systems and files to authorized personnel only to prevent unauthorized read access.

Long-Term Security Practices

Regularly monitor and assess the security posture of systems to identify and address potential vulnerabilities promptly.
Conduct security awareness training for employees to educate them on best practices for handling sensitive information and preventing security incidents.

Patching and Updates

Stay informed about security advisories and updates released by Schneider Electric to ensure systems are protected against known vulnerabilities.
Promptly apply patches and updates to the affected software to eliminate the risk posed by CVE-2023-2161 and enhance overall system security.