CVE-2020-10062

Packet length decoding error in MQTT

Description

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.

Category

9.0
CVSS
Severity: Critical
CVSS 3.1 •
CVSS 2.0 •
EPSS 5.82% Top 10%
Vendor Advisory zephyrproject.org
Affected: zephyrproject-rtos zephyr
Published at:
Updated at:

References

Link Tags
https://zephyrprojectsec.atlassian.net/browse/ZEPSEC-84 third party advisory
https://docs.zephyrproject.org/latest/security/vulnerabilities.html#cve-2020-10062 vendor advisory
https://github.com/zephyrproject-rtos/zephyr/pull/23821/commits/11b7a37d9a0b438270421b224221d91929843de4 third party advisory patch
https://research.nccgroup.com/2020/05/26/research-report-zephyr-and-mcuboot-security-assessment third party advisory

Frequently Asked Questions

What is the severity of CVE-2020-10062?
CVE-2020-10062 has been scored as a critical severity vulnerability.
How to fix CVE-2020-10062?
To fix CVE-2020-10062, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-10062 being actively exploited in the wild?
It is possible that CVE-2020-10062 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~6% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2020-10062?
CVE-2020-10062 affects zephyrproject-rtos zephyr.
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