CVE-2020-10067 : Vulnerability Insights and Analysis
Learn about CVE-2020-10067, an integer overflow vulnerability in Zephyr OS, allowing malicious userspace applications to bypass security checks and potentially execute code within the kernel.
A malicious userspace application can cause an integer overflow in the Zephyr operating system, potentially leading to security bypass and various impacts on the system. This CVE affects Zephyr versions 1.14.1 and 2.1.0.
Understanding CVE-2020-10067
This CVE involves an integer overflow vulnerability in the Zephyr operating system that can be exploited by a malicious userspace application.
What is CVE-2020-10067?
This CVE describes how a malicious userspace application can trigger an integer overflow, circumventing security checks in system call handlers. The severity of the impact varies depending on the system call, ranging from denial of service to memory corruption and potential code execution within the kernel.
The Impact of CVE-2020-10067
The impact of this vulnerability can be severe, potentially leading to denial of service, information leakage, or even code execution within the kernel. The severity is rated as HIGH.
Technical Details of CVE-2020-10067
This section provides more technical insights into the vulnerability.
Vulnerability Description
The vulnerability allows a malicious userspace application to trigger an integer overflow, bypassing security checks in system call handlers.
Affected Systems and Versions
- Affected Product: Zephyr
- Vendor: Zephyrproject-rtos
- Versions: 1.14.1 and later, 2.1.0 and later
Exploitation Mechanism
The exploitation involves triggering an integer overflow in the Zephyr operating system, enabling the bypass of security checks in system call handlers.
Mitigation and Prevention
To address CVE-2020-10067, follow these mitigation strategies:
Immediate Steps to Take
- Apply patches provided by Zephyrproject-rtos promptly.
- Monitor for any unusual system behavior that could indicate exploitation of the vulnerability.
Long-Term Security Practices
- Regularly update and patch the Zephyr operating system to mitigate known vulnerabilities.
- Implement least privilege access controls to limit the impact of potential security breaches.
Patching and Updates
Ensure that you regularly update the Zephyr operating system to the latest version containing security patches.