by Kastro
Paper/Archive/CVE-2020-10071

CVE-2020-10071

zephyrproject-rtos zephyr — Insufficient publish message length validation in MQTT

EPSS 3%CVSS 9.8
critical.is priorityof 100
47
CVSS 9.8 (NVD)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 88.8.888 × 2017.8No public exploit+100.0SSVC exploitation: unknown+100.0
Description · from the CVE record

The Zephyr MQTT parsing code performs insufficient checking of the length field on publish messages, allowing a buffer overflow and potentially remote code execution. NCC-ZEP-031 This issue affects: zephyrproject-rtos zephyr version 2.2.0 and later versions.

Affected

ProductAffectedFixed inSource
zephyr2.2.0 – < unspecifiedunspecifiedCNA

Scores by source

NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
zephyr (CNA)9.0CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

References

refresearch.nccgroup.com/2020/05/26/research-report-zephyr-and-mcuboot-security-assessmentrefzephyrprojectsec.atlassian.net/browse/ZEPSEC-86refdocs.zephyrproject.org/latest/security/vulnerabilities.html#cve-2020-10071refgithub.com/zephyrproject-rtos/zephyr/pull/23821/commits/989c4713ba429aa5105fe476b4d629718f3e6082