CVE-2020-10019 : Exploit Details and Defense Strategies
Learn about CVE-2020-10019, a high-severity vulnerability in Zephyr's USB DFU feature allowing buffer overflow. Find mitigation steps and affected versions here.
USB DFU vulnerability in Zephyr affecting versions 1.14.1 and 2.1.0.
Understanding CVE-2020-10019
USB DFU vulnerability in Zephyr with a potential buffer overflow.
What is CVE-2020-10019?
CVE-2020-10019 is a vulnerability in Zephyr's USB Device Firmware Upgrade (DFU) feature, allowing a malicious USB host to trigger a buffer overflow by exploiting unchecked buffer size.
The Impact of CVE-2020-10019
- CVSS Score: 8.1 (High)
- Severity: High
- Attack Vector: Local
- Impact: High impact on confidentiality, integrity, and availability
Technical Details of CVE-2020-10019
USB DFU vulnerability details in Zephyr.
Vulnerability Description
The vulnerability arises from a lack of validation on the requested length parameter, enabling a potential buffer overflow.
Affected Systems and Versions
- Affected Versions: 1.14.1 and later, 2.1.0 and later
- Products: Zephyr
Exploitation Mechanism
The vulnerability can be exploited by a malicious USB host sending a crafted request with a length parameter that exceeds the buffer size, leading to a buffer overflow.
Mitigation and Prevention
Protecting systems from CVE-2020-10019.
Immediate Steps to Take
- Apply patches provided by Zephyr to address the vulnerability.
- Monitor for any suspicious USB activity.
Long-Term Security Practices
- Regularly update Zephyr to the latest version to ensure security patches are applied.
- Implement USB security best practices to mitigate similar vulnerabilities.
Patching and Updates
- Stay informed about security updates from Zephyr and promptly apply patches to secure systems.