CVE-2019-5171: wago pfc200_firmware OS Command Injection

Vulnerability summary

CVE-2019-5171 is a high (CVSS 7.8) OS Command Injection vulnerability in wago pfc200_firmware. EPSS estimates a 1.39% chance of exploitation in the next 30 days, higher than 71.9% of scored vulnerabilities. 1 public exploit is recorded.

Timeline

1. 11-03-2020
   PublishedVulnerability first disclosed.
2. 04-08-2024
   Last modifiedVulnerability information updated.

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 specially crafted packet at 0x1ea48 to the extracted hostname value from the xml file that is used as an argument to /etc/config-tools/config_interfaces interface=X1 state=enabled ip-address=<contents of ip node> using sprintf().

• CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.