Vulnerability Details CVE-2019-5172
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.003
EPSS Ranking 50.1%
CVSS Severity
CVSS v3 Score 7.8
CVSS v2 Score 7.2
References
Products affected by CVE-2019-5172
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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)