CVE-2020-10071

EUVD-2020-2536
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.
Classic Buffer Overflow
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
9 CRITICAL
NETWORK
HIGH
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
zephyrCNA
9 CRITICAL
NETWORK
HIGH
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 94%
Affected Products (NVD)
VendorProductVersion
zephyrprojectzephyr
𝑥
≤ 2.2.0
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://docs.zephyrproject.org/latest/security/vulnerabilities.html#cve-2020-10071
https://github.com/zephyrproject-rtos/zephyr/pull/23821/commits/989c4713ba429aa5105fe476b4d629718f3e6082
https://research.nccgroup.com/2020/05/26/research-report-zephyr-and-mcuboot-security-assessment
https://zephyrprojectsec.atlassian.net/browse/ZEPSEC-86
https://docs.zephyrproject.org/latest/security/vulnerabilities.html#cve-2020-10071
https://github.com/zephyrproject-rtos/zephyr/pull/23821/commits/989c4713ba429aa5105fe476b4d629718f3e6082
https://research.nccgroup.com/2020/05/26/research-report-zephyr-and-mcuboot-security-assessment
https://zephyrprojectsec.atlassian.net/browse/ZEPSEC-86