CVE-2023-0595 : What You Need to Know

This CVE record, assigned by Schneider Electric, was published on February 24, 2023, highlighting a vulnerability in Schneider Electric products.

Understanding CVE-2023-0595

This CVE-2023-0595 vulnerability, identified as CWE-117: Improper Output Neutralization for Logs, impacts various versions of Schneider Electric's EcoStruxure Geo SCADA Expert and ClearSCADA products, allowing misinterpretation of log files when malicious packets are sent to the Geo SCADA server's database web port.

What is CVE-2023-0595?

The CVE-2023-0595 vulnerability, categorized as CWE-117, arises due to improper output neutralization for logs, potentially leading to the misinterpretation of log files upon the receipt of malicious packets on the Geo SCADA server's database web port.

The Impact of CVE-2023-0595

With a CVSS v3.1 base score of 5.3 (Medium severity), this vulnerability poses a risk of low integrity impact without requiring any special privileges, although it does not affect availability or confidentiality. Its attack complexity is low, occurring via a network vector with no user interaction needed.

Technical Details of CVE-2023-0595

This CVE affects certain versions of Schneider Electric products as follows:

Vulnerability Description

The vulnerability stems from improper output neutralization for logs, potentially leading to log file misinterpretation upon the receipt of malicious packets on the Geo SCADA server's database web port (default 443).

Affected Systems and Versions

The affected products include EcoStruxure Geo SCADA Expert 2019, EcoStruxure Geo SCADA Expert 2020, EcoStruxure Geo SCADA Expert 2021 (versions before October 2022), and ClearSCADA (all versions).

Exploitation Mechanism

Exploitation of this vulnerability can occur through the reception of malicious packets on the Geo SCADA server's database web port, causing misinterpretation of log files.

Mitigation and Prevention

To address CVE-2023-0595, consider the following mitigation strategies:

Immediate Steps to Take

Monitor and restrict network access to the affected systems.
Implement firewall rules to filter out potentially harmful traffic.
Apply vendor-supplied patches and updates promptly.

Long-Term Security Practices

Regularly update and patch the affected products to eliminate known vulnerabilities.
Conduct regular security audits and assessments to identify and remediate potential risks.
Provide cybersecurity training to ensure staff are aware of best practices and security protocols.

Patching and Updates

Schneider Electric may release patches or updates to rectify the CVE-2023-0595 vulnerability. Stay informed about security advisories and apply patches promptly to mitigate the risk of exploitation.