Description
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.
CVSS breakdown
CVSS 3.1
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High
Affected products
- zephyrproject-rtos / Zephyr2.2.0 – unspecified
References
- MISChttps://research.nccgroup.com/2020/05/26/research-report-zephyr-and-mcuboot-security-assessment
- MISChttps://zephyrprojectsec.atlassian.net/browse/ZEPSEC-86
- MISChttps://docs.zephyrproject.org/latest/security/vulnerabilities.html#cve-2020-10071
- PATCHhttps://github.com/zephyrproject-rtos/zephyr/pull/23821/commits/989c4713ba429aa5105fe476b4d629718f3e6082