Learn about CVE-2022-41802, a medium-severity kernel stack overflow vulnerability in OpenHarmony's kernel_liteos_a subsystem versions 3.1.0, 3.0.0, and 1.1.0. Find out the impacts, technical details, and mitigation steps.
This article provides detailed information about CVE-2022-41802, a vulnerability in the kernel subsystem of OpenHarmony affecting versions 3.1.0, 3.0.0, and 1.1.0.
Understanding CVE-2022-41802
CVE-2022-41802 is a kernel stack overflow vulnerability in the kernel_liteos_a subsystem of OpenHarmony versions before v3.1.4. The issue arises when calling SysClockGetres, leading to incorrect copying and leakage of 4 bytes of padding data from the kernel stack to user space.
What is CVE-2022-41802?
The vulnerability in the kernel subsystem of OpenHarmony allows for a kernel stack overflow when executing SysClockGetres, resulting in the improper transfer of padding data to user space.
The Impact of CVE-2022-41802
CVE-2022-41802 has a CVSS v3.1 base score of 4, indicating a medium severity issue. It can potentially lead to resource leak exposure (CAPEC-131) due to the incorrect handling of kernel stack data.
Technical Details of CVE-2022-41802
The following key technical details outline the specifics of CVE-2022-41802:
Vulnerability Description
The vulnerability involves a kernel stack overflow in the kernel_liteos_a subsystem, allowing for the leakage of 4 bytes of padding data to user space.
Affected Systems and Versions
OpenHarmony versions 3.1.4 and prior, including 3.1.0, 3.0.0, and 1.1.0, are impacted by this vulnerability in the kernel subsystem.
Exploitation Mechanism
Exploiting CVE-2022-41802 involves triggering the SysClockGetres function in the kernel_liteos_a subsystem to overflow the kernel stack and leak sensitive data.
Mitigation and Prevention
To address CVE-2022-41802, consider the following mitigation strategies:
Immediate Steps to Take
Long-Term Security Practices
Patching and Updates
Stay informed about security updates and advisories from OpenHarmony to promptly address any new vulnerabilities.