Vulnerability Details CVE-2019-5174
An exploitable command injection vulnerability exists in the iocheckd service ‘I/O-Check’ function of the WAGO PFC 200 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 subnetmask value from the xml file is used as an argument to /etc/config-tools/config_interfaces interface=X1 state=enabled subnet-mask=<contents of subnetmask node> using sprintf(). This command is later executed via a call to system().
Exploit prediction scoring system (EPSS) score
EPSS Score 0.004
EPSS Ranking 56.7%
CVSS Severity
CVSS v3 Score 7.8
CVSS v2 Score 7.2
References
Products affected by CVE-2019-5174
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cpe:2.3:h:wago:pfc200:-
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cpe:2.3:o:wago:pfc200_firmware:03.02.02(14)