### [CVE-2018-3878](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-3878)
![](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

Multiple exploitable buffer overflow vulnerabilities exist in the credentials handler of video-core's HTTP server of 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. A strncpy overflows the destination buffer, which has a size of 16 bytes. An attacker can send an arbitrarily long "region" value in order to exploit this vulnerability.

### POC

#### Reference
- https://www.talosintelligence.com/vulnerability_reports/TALOS-2018-0555

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