CVE-2019-5182: wago pfc200_firmware Out-of-bounds Write

Vulnerability summary

CVE-2019-5182 is a medium (CVSS 5.5) Out-of-bounds Write vulnerability in wago pfc200_firmware. EPSS estimates a 0.53% chance of exploitation in the next 30 days, higher than 43.4% 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 stack buffer overflow vulnerability vulnerability exists in the iocheckd service ‘I/O-Check’ functionality of 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.The destination buffer sp+0x440 is overflowed with the call to sprintf() for any type values that are greater than 1024-len(‘/etc/config-tools/config_interfaces interface=X1 state=enabled config-type=‘) in length. A type value of length 0x3d9 will cause the service to crash.

• CWE-787Out-of-bounds WriteThe product writes data past the end, or before the beginning, of the intended buffer.