CVE-2020-10023 : Security Advisory and Response
Learn about CVE-2020-10023, a critical buffer overflow vulnerability in the Zephyr shell subsystem, allowing attackers with physical access to trigger memory corruption and potential code execution.
A buffer overflow vulnerability in the shell subsystem of Zephyr allows an attacker with physical access to the device to trigger memory corruption, potentially leading to denial of service or code execution within the Zephyr kernel.
Understanding CVE-2020-10023
This CVE involves a critical buffer overflow issue in the Zephyr shell subsystem.
What is CVE-2020-10023?
The vulnerability in the shell subsystem of Zephyr enables an adversary with physical device access to exploit a buffer overflow, causing memory corruption that can result in denial of service or even code execution within the Zephyr kernel.
The Impact of CVE-2020-10023
The vulnerability poses a medium-severity threat with high impacts on confidentiality, integrity, and availability of affected systems.
Technical Details of CVE-2020-10023
This section provides technical insights into the vulnerability.
Vulnerability Description
The buffer overflow in the shell subsystem of Zephyr allows attackers physical access to the device to corrupt memory, potentially leading to denial of service or code execution.
Affected Systems and Versions
- Affected Product: Zephyr
- Vendor: Zephyrproject-rtos
- Vulnerable Versions: 1.14.0 and later, 2.1.0 and later
Exploitation Mechanism
The vulnerability can be exploited by an attacker with physical access to the device, triggering a buffer overflow and causing memory corruption.
Mitigation and Prevention
Protecting systems from CVE-2020-10023 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Apply patches provided by Zephyrproject-rtos promptly.
- Restrict physical access to devices to prevent unauthorized exploitation.
Long-Term Security Practices
- Regularly update and patch Zephyr software to mitigate known vulnerabilities.
- Implement access controls and monitoring to detect and prevent unauthorized access.
Patching and Updates
- Stay informed about security updates and patches released by Zephyrproject-rtos.
- Ensure timely application of patches to address vulnerabilities and enhance system security.