### [CVE-2019-5172](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-5172)
![](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). An attacker can send a specially crafted packet to trigger the parsing of this cache file. At 0x1e840 the extracted ntp value from the xml file is used as an argument to /etc/config-tools/config_sntp time-server-%d=<contents of ntp node> using sprintf(). This command is later executed via a call to system(). This is done in a loop and there is no limit to how many ntp entries will be parsed from the xml file.

### POC

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

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