CVE-2023-32804 : Exploit Details and Defense Strategies
Explore the details of the CVE-2023-32804 vulnerability in Arm Ltd's Mali GPU Userspace Driver, allowing unauthorized memory write access. Learn about the impact, affected systems, mitigation, and prevention measures.
A detailed analysis of the vulnerability in Arm Ltd's Mali GPU Userspace Driver that allows a local non-privileged user to perform an out-of-bounds write attack.
Understanding CVE-2023-32804
This section provides insights into the nature of the CVE-2023-32804 vulnerability and its implications.
What is CVE-2023-32804?
The CVE-2023-32804 vulnerability resides in multiple GPU userspace drivers by Arm Ltd, enabling unauthorized memory write access by local users, posing a security risk.
The Impact of CVE-2023-32804
The vulnerability enables a local non-privileged user to overwrite a specific memory section not allocated by the userspace driver, potentially leading to unauthorized access or system compromise.
Technical Details of CVE-2023-32804
Explore the technical aspects and affected components related to the CVE-2023-32804 vulnerability.
Vulnerability Description
The vulnerability allows unauthorized users to write a constant pattern to restricted memory regions in various Arm GPU userspace drivers, including Midgard, Bifrost, Valhall, and 5th Gen GPU Architecture.
Affected Systems and Versions
The affected GPU userspace drivers include Midgard (from r0p0 to r32p0), Bifrost (from r0p0 to r44p0), Valhall (from r19p0 to r44p0), and Arm 5th Gen GPU Architecture (from r41p0 to r44p0).
Exploitation Mechanism
Local non-privileged users exploit the vulnerability to overwrite restricted memory areas, bypassing the driver's memory allocation safeguards.
Mitigation and Prevention
Discover the essential steps to mitigate the CVE-2023-32804 vulnerability and prevent potential security risks.
Immediate Steps to Take
It is crucial to upgrade the affected GPU userspace drivers to versions r44p1 and r45p0 for Bifrost, Valhall, and Arm 5th Gen GPU Architecture to address the vulnerability. Arm Midgard GPU users should contact Arm support for assistance.
Long-Term Security Practices
Implement regular security updates, threat monitoring, and access controls to enhance the overall security posture against similar vulnerabilities.
Patching and Updates
Stay informed about security patches and updates released by Arm Ltd to address known vulnerabilities, ensuring the timely application of fixes.