#VU34391 Buffer overflow in zephyr - CVE-2020-10023
Published: May 12, 2020 / Updated: August 8, 2020
Vulnerability identifier: #VU34391
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2020-10023
CWE-ID: CWE-120
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
zephyr
zephyr
Software vendor:
rutantan
rutantan
Description
The vulnerability allows a local non-authenticated attacker to execute arbitrary code.
The shell subsystem contains a buffer overflow, whereby an adversary with physical access to the device is able to cause a memory corruption, resulting in denial of service or possibly code execution within the Zephyr kernel. See NCC-NCC-019 This issue affects: zephyrproject-rtos zephyr version 1.14.0 and later versions. version 2.1.0 and later versions.
Remediation
Install update from vendor's website.
External links
- https://docs.zephyrproject.org/latest/security/vulnerabilities.html#cve-2020-10023
- https://github.com/zephyrproject-rtos/zephyr/pull/23304
- https://github.com/zephyrproject-rtos/zephyr/pull/23646
- https://github.com/zephyrproject-rtos/zephyr/pull/23649
- https://zephyrprojectsec.atlassian.net/browse/ZEPSEC-29