CVE-2021-34382 : Vulnerability Insights and Analysis
Discover the impact of CVE-2021-34382 on NVIDIA Jetson TX1 devices, its technical details, affected versions, exploitation risks, and mitigation steps. Take immediate action and adopt long-term security practices.
Trusty TLK contains a vulnerability in the NVIDIA TLK kernel's tz_map_shared_mem function, leading to an integer overflow that causes buffer overflows, enabling writes to arbitrary addresses within the kernel.
Understanding CVE-2021-34382
This CVE affects NVIDIA Jetson TX1 devices running all Jetson Linux versions prior to r32.5.1.
What is CVE-2021-34382?
CVE-2021-34382 involves an integer overflow in the NVIDIA TLK kernel, allowing unauthorized writes to kernel addresses, potentially leading to information disclosure, privilege escalation, and denial of service.
The Impact of CVE-2021-34382
The vulnerability's high availability, confidentiality, and integrity impacts with a CVSS base score of 6.7 pose a significant threat. Attackers can exploit this locally with low privileges but requiring user interaction.
Technical Details of CVE-2021-34382
The vulnerability in the tz_map_shared_mem function can result in buffer overflows, leading to unauthorized memory writes within the kernel.
Vulnerability Description
An integer overflow on the size parameter allows the request buffer and logging buffer to overflow, enabling malicious writes to arbitrary kernel addresses.
Affected Systems and Versions
All Jetson Linux versions prior to r32.5.1 on NVIDIA Jetson TX1 devices are impacted by this CVE.
Exploitation Mechanism
Attackers can leverage this vulnerability locally, requiring minimal privileges and user interaction, to potentially breach system integrity and confidentiality.
Mitigation and Prevention
To mitigate CVE-2021-34382, immediate action followed by long-term security practices and regular patching is crucial.
Immediate Steps to Take
Users should update affected NVIDIA Jetson TX1 devices to version r32.5.1 or later. Additionally, monitor for any signs of unauthorized access.
Long-Term Security Practices
Implement strict access controls, regular security audits, and employee awareness programs to prevent and detect similar vulnerabilities in the future.
Patching and Updates
Stay informed about security updates from NVIDIA and promptly apply patches to address known vulnerabilities.