CVE-2020-10062: An off-by-one error in the Zephyr project MQTT packet length decoder can result in memory corruption and possible remote code execution. NCC-ZEP-031 This issue…

PriorityP357critical9.8CVSS 3.1

AVNACLPRNUINSUCHIHAH

EPSS

2.88%

85.1th percentile

An off-by-one error in the Zephyr project MQTT packet length decoder can result in memory corruption and possible remote code execution. NCC-ZEP-031 This issue affects: zephyrproject-rtos zephyr version 2.2.0 and later versions.

Affected

2 ranges

Vendor	Product	Version range	Fixed in
zephyrproject-rtos	zephyr	>= 2.2.0 < unspecified	unspecified
zephyrproject	zephyr	<= 2.2.0	—

Detection & IOCsextracted from sources · hover to see the quote

→The vulnerability is an off-by-one error in the Zephyr RTOS MQTT packet length decoder, affecting version 2.2.0 and later. Detection should focus on malformed MQTT packet length fields targeting Zephyr-based devices. ↗

·Vulnerability is present in Zephyr RTOS version 2.2.0 and later; only devices running these versions of Zephyr with MQTT enabled are affected. ↗

CVSS provenance

nvdv3.19.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

nvdv2.07.5HIGHAV:N/AC:L/Au:N/C:P/I:P/A:P

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