#VU23584 Authentication Bypass by Spoofing in Omron PLC CS series and Omron PLC CJ series - CVE-2019-18259

Vulnerability identifier: #VU23584

Vulnerability risk: Medium

CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Green

CVE-ID: CVE-2019-18259

CWE-ID: CWE-290

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vulnerable software:
Omron PLC CS series
Omron PLC CJ series

Software vendor:
Omron

The vulnerability allows a remote attacker to perform a spoofing attack.

The vulnerability exists in the FINS communication protocol due to the FINS communication packet between a controller and a PLC may be monitored and it may invite replay attack using commands for the PLC. A remote attacker can perform an ID-theft or execute commands on the target system.

Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

• http://www.omron-cxone.com/security/2019-12-06_PLC_EN.pdf