CVE-2020-10070

MQTT buffer overflow on receive buffer

Description

In the Zephyr Project MQTT code, improper bounds checking can result in memory corruption and possibly 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 6.47% Top 10%
Vendor Advisory zephyrproject.org
Affected: zephyrproject-rtos zephyr
Published at:
Updated at:

References

Link Tags
https://research.nccgroup.com/2020/05/26/research-report-zephyr-and-mcuboot-security-assessment third party advisory
https://zephyrprojectsec.atlassian.net/browse/ZEPSEC-85 third party advisory
https://docs.zephyrproject.org/latest/security/vulnerabilities.html#cve-2020-10070 vendor advisory
https://github.com/zephyrproject-rtos/zephyr/pull/23821/commits/0b39cbf3c01d7feec9d0dd7cc7e0e374b6113542 third party advisory patch

Frequently Asked Questions

What is the severity of CVE-2020-10070?
CVE-2020-10070 has been scored as a critical severity vulnerability.
How to fix CVE-2020-10070?
To fix CVE-2020-10070, 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-2020-10070 being actively exploited in the wild?
It is possible that CVE-2020-10070 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-2020-10070?
CVE-2020-10070 affects zephyrproject-rtos zephyr.
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