Denial of service in JTEKT TOYOPUC products

1) Allocation of Resources Without Limits or Throttling

EUVDB-ID: #VU56289

Risk: Low

CVSSv3.1: 4 [CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:U/RC:C]

CVE-ID: CVE-2021-33011

CWE-ID: CWE-770 - Allocation of Resources Without Limits or Throttling

Exploit availability: No

Description

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

The vulnerability exists due to the affected product may not be able to properly process an ICMP flood. A remote attacker on the local network can cause a denial of service condition on the target system.

Mitigation

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

Vulnerable software versions

TOYOPUC PC10G-CPU TCC-6353: All versions

TOYOPUC PC10GE TCC-6464: All versions

TOYOPUC PC10P TCC-6372: All versions

TOYOPUC PC10P-DP TCC-6726: All versions

TOYOPUC PC10P-DP-IO TCC-6752: All versions

TOYOPUC PC10B-P TCC-6373: All versions

TOYOPUC PC10B TCC-1021: All versions

TOYOPUC PC10B-E/C TCU-6521: All versions

TOYOPUC PC10E TCC-4637: All versions

TOYOPUC PC10PE TCC-1101: All versions

TOYOPUC PC10PE-1616P TCC-1102: All versions

TOYOPUC EF10 TCU-6982: All versions

TOYOPUC Plus CPU TCC-6740: All versions

TOYOPUC Plus EX TCU-6741: All versions

TOYOPUC Plus EX2 TCU-6858: All versions

TOYOPUC Plus EFR TCU-6743: All versions

TOYOPUC Plus EFR2 TCU-6859: All versions

TOYOPUC Plus 2P-EFR TCU-6929: All versions

TOYOPUC Plus BUS-EX TCU-6900: All versions

TOYOPUC PC3J/PC2J FL/ET-T-V2H THU-6289: All versions

TOYOPUC PC3J/PC2J 2PORT-EFR THU-6404: All versions

TOYOPUC Nano 10GX TUC-1157: All versions

TOYOPUC Nano CPU TUC-6941: All versions

TOYOPUC Nano 2ET TUU-6949: All versions

TOYOPUC Nano Safety TUC-1085: All versions

TOYOPUC Nano Safety RS00IP TUU-1086: All versions

TOYOPUC Nano Safety RS01IP TUU-1087: All versions

External links

http://ics-cert.us-cert.gov/advisories/icsa-21-245-02

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.