CVEs-PoC/2020/CVE-2020-10062.md

### [CVE-2020-10062](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-10062)
![](https://img.shields.io/static/v1?label=Product&message=zephyr&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=%3E%3D%202.2.0%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=CWE-193%20Off-by-one%20Error&color=brighgreen)

### 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.

### POC

#### Reference
- https://research.nccgroup.com/2020/05/26/research-report-zephyr-and-mcuboot-security-assessment
- https://zephyrprojectsec.atlassian.net/browse/ZEPSEC-84

#### Github
- https://github.com/ARPSyndicate/cvemon
- https://github.com/IoTAccessControl/RapidPatch-ToolChain