PT-2018-9526 · Linux Foundation · Zephyr Rtos

Stuartlyo · Published 2018-09-06 · Updated 2020-05-13 · CVE-2018-1000800

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions zephyr-rtos version 1.12.0

Description The issue is related to a NULL base pointer reference in the sys ring buf put() and sys ring buf get() functions, which can cause a CPU Page Fault with error code 0x00000010. This can be exploited through a malicious application calling the vulnerable kernel APIs, specifically sys ring buf get() and sys ring buf put().

Recommendations For zephyr-rtos version 1.12.0, consider restricting access to the sys ring buf get() and sys ring buf put() functions until a patch is available. As a temporary workaround, avoid using these functions in applications to minimize the risk of exploitation.

Exploit

Fix

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

CVE-2018-1000800

Affected Products

Zephyr Rtos

References · 3

• 🔥 https://github.com/zephyrproject-rtos/zephyr/issues/7638 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2018-1000800 · Security Note
• https://osv.dev/vulnerability/CVE-2018-1000800 · Vendor Advisory