Packet length decoding error in MQTT
28Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 9epss 2.9%
exploitation probability
2.9%top 14% of all CVEs
observed exploitation
nono source reports it
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.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
Affected products
zephyrproject-rtos · zephyrReferences
https://docs.zephyrproject.org/latest/security/vulnerabilities.html#cve-2020-10062https://github.com/zephyrproject-rtos/zephyr/pull/23821/commits/11b7a37d9a0b438270421b224221d91929843de4https://research.nccgroup.com/2020/05/26/research-report-zephyr-and-mcuboot-security-assessmenthttps://zephyrprojectsec.atlassian.net/browse/ZEPSEC-84