NULL pointer dereference in zephyr - CVE-2018-1000800
Published: September 6, 2018 / Updated: August 8, 2020
Vulnerability identifier: #VU36724
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2018-1000800
CWE-ID: CWE-476
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: rutantan
Affected software:
zephyr
zephyr
Detailed vulnerability description
The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.
zephyr-rtos version 1.12.0 contains a NULL base pointer reference vulnerability in sys_ring_buf_put(), sys_ring_buf_get() that can result in CPU Page Fault (error code 0x00000010). This attack appear to be exploitable via a malicious application call the vulnerable kernel APIs (system sys_ring_buf_get() and sys_ring_buf_put).
How to mitigate CVE-2018-1000800
Install update from vendor's website.