#VU54460 Buffer overflow in JTEKT Corporation products - CVE-2021-27477

Vulnerability identifier: #VU54460

Vulnerability risk: Low

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

CVE-ID: CVE-2021-27477

CWE-ID: CWE-119

Exploitation vector: Adjecent network

Exploit availability: No public exploit available

Vulnerable software:
TOYOPUC PLC Plus CPU
TOYOPUC PLC Plus EX
TOYOPUC PLC Plus EX2
TOYOPUC PLC Plus EFR
TOYOPUC PLC Plus EFR2
TOYOPUC PLC Plus 2P-EFR
TOYOPUC PLC Plus BUS-EX
TOYOPUC PLC PC10E
TOYOPUC PLC FL/ET-T-V2H
TOYOPUC PLC PC10B
TOYOPUC PLC PC10B-P
TOYOPUC PLC Nano CPU
TOYOPUC PLC PC10P
TOYOPUC PLC PC10GE
TOYOPUC PLC PC10G-CPU
TOYOPUC PLC 2PORT-EFR
TOYOPUC PLC PC10P-DP
TOYOPUC PLC PC10P-DP-IO
TOYOPUC PLC Nano 10GX
TOYOPUC PLC Nano 2ET
TOYOPUC PLC PC10PE
TOYOPUC PLC PC10PE-16/16P

Software vendor:
JTEKT Corporation

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary error. A remote attacker on the local network can trigger memory corruption and cause a denial of service condition on the target system.

Install updates from vendor's website.

• https://ics-cert.us-cert.gov/advisories/icsa-21-180-04