### [CVE-2019-5167](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-5167)
![](https://img.shields.io/static/v1?label=Product&message=WAGO%20PFC200%20Firmware&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 version 03.02.02(14). At 0x1e3f0 the extracted dns value from the xml file is used as an argument to /etc/config-tools/edit_dns_server %s dns-server-nr=%d dns-server-name=<contents of dns 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 dns entries will be parsed from the xml file.

### POC

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

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