CVE-2022-34762 : Vulnerability Insights and Analysis
Discover the impact of CVE-2022-34762, a CWE-22 vulnerability affecting Schneider Electric's OPC UA Modicon and X80 RTU Communication Modules. Learn about the mitigation steps and necessary updates.
A CWE-22 vulnerability has been identified in Schneider Electric's OPC UA Modicon Communication Module and X80 advanced RTU Communication Module. This vulnerability could lead to unauthorized firmware image loading when unsigned images are added to the firmware image path.
Understanding CVE-2022-34762
This CVE, dated July 12, 2022, highlights the risk of Path Traversal vulnerability affecting certain products from Schneider Electric.
What is CVE-2022-34762?
The vulnerability marked as CWE-22 stems from improper limitation of a pathname to a restricted directory, allowing unauthorized firmware image loading.
The Impact of CVE-2022-34762
With a base severity rating of MEDIUM (CVSS score: 5.9), this vulnerability poses a high integrity impact and availability impact, affecting systems that use the vulnerable Schneider Electric products.
Technical Details of CVE-2022-34762
This section delves deeper into the technical aspects of the CVE.
Vulnerability Description
The vulnerability involves unauthorized firmware image loading due to improper pathname limitations, making systems susceptible to malicious firmware alterations.
Affected Systems and Versions
The affected products include the OPC UA Modicon Communication Module (version V1.10 and prior) and the X80 advanced RTU Communication Module (version V2.01 and later), both from Schneider Electric.
Exploitation Mechanism
Unauthorized firmware image loading can occur if unsigned images are introduced to the firmware image path, exploiting the improper pathname limitations.
Mitigation and Prevention
To safeguard systems from CVE-2022-34762, immediate actions and long-term security practices are crucial.
Immediate Steps to Take
Users are advised to apply vendor-provided patches promptly and verify the integrity of firmware images to prevent unauthorized modifications.
Long-Term Security Practices
Implementing network segmentation, regularly monitoring system activity, and restricting access to firmware image paths can enhance security resilience.
Patching and Updates
Regularly check for security updates from Schneider Electric and apply patches to address CVE-2022-34762 effectively.