CVE-2021-38409 : Exploit Details and Defense Strategies
Learn about CVE-2021-38409, a high-severity vulnerability affecting Fuji Electric's V-Server Lite and Tellus Lite V-Simulator versions < 4.0.12.0. Understand the impact, technical details, and mitigation steps.
This article provides a detailed overview of CVE-2021-38409, a vulnerability affecting Fuji Electric's V-Server Lite and Tellus Lite V-Simulator platforms.
Understanding CVE-2021-38409
CVE-2021-38409 is a vulnerability found in Fuji Electric's V-Server Lite and Tellus Lite V-Simulator platforms that could allow attackers to read or write to unexpected memory locations, potentially resulting in a denial-of-service attack.
What is CVE-2021-38409?
Fuji Electric V-Server Lite and Tellus Lite V-Simulator versions prior to v4.0.12.0 are susceptible to an access of uninitialized pointer, posing a risk of unauthorized memory access with high impact on confidentiality, integrity, and availability.
The Impact of CVE-2021-38409
The vulnerability's CVSS v3.1 base score of 7.8 classifies it as high severity, with a low attack complexity and vector while requiring user interaction, potentially leading to a local denial-of-service attack.
Technical Details of CVE-2021-38409
The vulnerability allows attackers to access uninitialized pointers, jeopardizing system security and stability, affecting Fuji Electric's V-Server Lite and Tellus Lite V-Simulator versions less than 4.0.12.0.
Vulnerability Description
CVE-2021-38409 enables unauthorized access to memory locations, leading to potential data corruption and service disruptions.
Affected Systems and Versions
Impacted systems include Fuji Electric V-Server Lite and Tellus Lite V-Simulator versions lower than 4.0.12.0.
Exploitation Mechanism
Attackers can exploit this vulnerability locally, allowing them to manipulate memory and disrupt system operations.
Mitigation and Prevention
To mitigate the risks associated with CVE-2021-38409, Fuji Electric recommends updating the affected software to the latest version (v4.0.12.0). Immediate action is crucial to prevent potential denial-of-service attacks.
Immediate Steps to Take
Ensure all impacted systems are updated to Fuji Electric Tellus Lite software Version 4.0.12.0 Disk1 and Disk2, and V-Server Lite software Version 4.0.12.0 Disk1 and Disk2.
Long-Term Security Practices
Regularly update software and maintain security best practices to safeguard against similar vulnerabilities in the future.
Patching and Updates
Stay informed about security patches and updates from Fuji Electric to address any known vulnerabilities promptly.