### [CVE-2018-3863](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-3863)
![](https://img.shields.io/static/v1?label=Product&message=SmartThings%20Hub%20STH-ETH-250&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Vulnerability&message=Buffer%20copy%20without%20checking%20size&color=brighgreen)

### Description

On Samsung SmartThings Hub STH-ETH-250 devices with firmware version 0.20.17, the video-core process incorrectly extracts fields from a user-controlled JSON payload, leading to a buffer overflow on the stack. An attacker can send an HTTP request to trigger this vulnerability. A strcpy overflows the destination buffer, which has a size of 40 bytes. An attacker can send an arbitrarily long "user" value in order to exploit this vulnerability.

### POC

#### Reference
- https://www.talosintelligence.com/vulnerability_reports/TALOS-2018-0548
- https://www.talosintelligence.com/vulnerability_reports/TALOS-2018-0548

#### Github
No PoCs found on GitHub currently.