CVE-2023-37200 : What You Need to Know
Discover the details of CVE-2023-37200, an XML External Entity Reference vulnerability in Schneider Electric's EcoStruxure OPC UA Server Expert, impacting versions prior to SV2.01 SP2.
This article provides detailed information about CVE-2023-37200, a vulnerability in Schneider Electric's EcoStruxure OPC UA Server Expert.
Understanding CVE-2023-37200
CVE-2023-37200 involves an Improper Restriction of XML External Entity Reference vulnerability that could lead to a loss of confidentiality when replacing a project file on the local filesystem followed by a manual restart of the server.
What is CVE-2023-37200?
The CVE-2023-37200 vulnerability affects versions prior to SV2.01 SP2 of the EcoStruxure OPC UA Server Expert developed by Schneider Electric. The vulnerability allows an attacker to compromise the confidentiality of the system.
The Impact of CVE-2023-37200
With a base severity score of 5.5 (Medium) according to CVSS v3.1, this vulnerability could result in a significant loss of confidentiality.
Technical Details of CVE-2023-37200
CVE-2023-37200 is categorized as CWE-611: Improper Restriction of XML External Entity Reference. The attack complexity is low, with a local attack vector and high confidentiality impact.
Vulnerability Description
The vulnerability arises due to improper handling of XML external entity references, exposing the system to confidentiality breaches during certain operations.
Affected Systems and Versions
The vulnerability impacts versions of EcoStruxure OPC UA Server Expert prior to SV2.01 SP2.
Exploitation Mechanism
An attacker can exploit this vulnerability by manipulating XML external entity references to gain unauthorized access and compromise system confidentiality.
Mitigation and Prevention
To mitigate the risks associated with CVE-2023-37200, immediate steps should be taken to address the vulnerability and prevent potential exploitation.
Immediate Steps to Take
Ensure that the EcoStruxure OPC UA Server Expert is updated to version SV2.01 SP2 or above to eliminate the vulnerability.
Long-Term Security Practices
Implement secure coding practices and regular security updates to safeguard against similar vulnerabilities in the future.
Patching and Updates
Stay informed about security advisories from Schneider Electric and promptly apply patches and updates to secure your systems.