CVE-2019-5185

An exploitable stack buffer overflow vulnerability vulnerability exists in the iocheckd service "I/O-Check" functionality of WAGO PFC 200. An attacker can send a specially crafted packet to trigger the parsing of this cache file. At 0x1ea28 the extracted state value from the xml file is used as an argument to /etc/config-tools/config_interfaces interface=X1 state= using sprintf(). The destination buffer sp+0x40 is overflowed with the call to sprintf() for any state values that are greater than 5…