CVE-2019-5173

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 0x1e9fc the extracted state value from the xml file is used as an argument to /etc/config-tools/config_interfaces interface=X1 state=<contents of state node> using sprintf(). This command is later executed via a call to system().

Score

CVSS 3.1 7.8 High

Status

Modified - talos-cna@cisco.com

Published

2020-03-11

Last modified

2024-08-04

Weaknesses

CWE-78

Affected products

• Pfc200 Firmware (Wago)
• Wago Pfc200 (Wago)

References

• https://talosintelligence.com/vulnerability_reports/TALOS-2019-0962