### [CVE-2019-5170](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-5170)
![](https://img.shields.io/static/v1?label=Product&message=WAGO%20PFC200&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Vulnerability&message=command%20injection&color=brighgreen)

### Description

An exploitable command injection vulnerability exists in the iocheckd service ‘I/O-Check’ function of the WAGO PFC 200 Firmware version 03.02.02(14). A specially crafted XML cache file written to a specific location on the device can be used to inject OS commands. An attacker can send a specially crafted packet to trigger the parsing of this cache file.At 0x1e87c the extracted hostname value from the xml file is used as an argument to /etc/config-tools/change_hostname hostname=<contents of hostname node> using sprintf(). This command is later executed via a call to system().

### POC

#### Reference
- https://talosintelligence.com/vulnerability_reports/TALOS-2019-0962

#### Github
- https://github.com/hectorgie/PoC-in-GitHub