CVE-2022-28193 : Security Advisory and Response

NVIDIA Jetson Linux Driver Package has been found to contain a vulnerability (CVE-2022-28193) in the Cboot module tegrabl_cbo.c. This vulnerability could be exploited by a local attacker with elevated privileges to cause a memory buffer overflow, leading to code execution, integrity loss, limited denial of service, and some confidentiality impact.

Understanding CVE-2022-28193

This section provides insights into the nature of CVE-2022-28193, its impact, technical details, and mitigation strategies.

What is CVE-2022-28193?

The CVE-2022-28193 vulnerability lies in the NVIDIA Jetson Linux Driver Package within the Cboot module tegrabl_cbo.c. Attackers with local access and elevated privileges can trigger a memory buffer overflow by exploiting insufficient data validation.

The Impact of CVE-2022-28193

The impact of this vulnerability includes the potential for code execution, loss of integrity, limited denial of service, and some compromise to confidentiality. The base severity is rated as 'Medium' based on the CVSS v3.1 scoring.

Technical Details of CVE-2022-28193

To understand the vulnerability better, let's delve deeper into its technical aspects.

Vulnerability Description

The vulnerability arises from insufficient validation of untrusted data in the Cboot module tegrabl_cbo.c, allowing attackers to overflow memory buffers.

Affected Systems and Versions

The vulnerability affects NVIDIA's Jetson AGX Xavier series and Jetson Xavier NX devices running all 32.x versions prior to 32.7.2.

Exploitation Mechanism

Local attackers with elevated privileges can exploit the vulnerability to cause a memory buffer overflow, potentially leading to code execution and other adverse impacts.

Mitigation and Prevention

To safeguard systems from CVE-2022-28193, certain mitigation steps and best practices need to be implemented.

Immediate Steps to Take

It is crucial to apply security updates promptly, specifically version 32.7.2 or later, to remediate the vulnerability. Restricting access to privileged accounts can also help mitigate the risk.

Long-Term Security Practices

In the long term, ensuring proper input validation and conducting regular security audits can enhance system resilience against such vulnerabilities. Additionally, monitoring for unusual activities and enforcing the principle of least privilege are recommended.

Patching and Updates

Regularly check for security patches and updates provided by NVIDIA to address known vulnerabilities, including CVE-2022-28193.