CVE-2019-5177

An exploitable stack buffer overflow vulnerability vulnerability exists in the iocheckd service I/O-Check functionality of WAGO PFC 200 Firmware version 03.02.02(14). The destination buffer sp+0x440 is overflowed with the call to sprintf() for any domainname values that are greater than 1024-len(/etc/config-tools/edit_dns_server domain-name=) in length. A domainname value of length 0x3fa will cause the service to crash.