cve/2023/CVE-2023-4257.md

### [CVE-2023-4257](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-4257)
![](https://img.shields.io/static/v1?label=Product&message=Zephyr&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=0%3C%3D%203.4%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=CWE-120%20Buffer%20Copy%20without%20Checking%20Size%20of%20Input%20('Classic%20Buffer%20Overflow')&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=CWE-131%20Incorrect%20Calculation%20of%20Buffer%20Size&color=brighgreen)

### Description

Unchecked user input length in /subsys/net/l2/wifi/wifi_shell.c can cause buffer overflows.

### POC

#### Reference
- http://packetstormsecurity.com/files/175657/Zephyr-RTOS-3.x.0-Buffer-Overflows.html
- http://packetstormsecurity.com/files/175657/Zephyr-RTOS-3.x.0-Buffer-Overflows.html
- https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-853q-q69w-gf5j
- https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-853q-q69w-gf5j

#### Github
- https://github.com/0xdea/advisories
- https://github.com/hnsecurity/vulns