Stack-based buffer overflow in Hitachi Energy RTU500 series CMU

1) Stack-based buffer overflow

EUVDB-ID: #VU66734

Risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2022-2081

CWE-ID: CWE-121 - Stack-based buffer overflow

Exploit availability: No

Description

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

The vulnerability exists due to a boundary error in the HCI Modbus TCP function. A remote unauthenticated attacker can send a specially crafted message, trigger stack-based buffer overflow and cause a denial of service condition on the target system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

RTU500 CMU: 12.0.1 - 13.3.1

CPE2.3

• cpe:2.3:h:hitachi_energy:rtu500_cmu:12.0.1:*:*:*:*:*:*:*
• cpe:2.3:h:hitachi_energy:rtu500_cmu:12.0.2:*:*:*:*:*:*:*
• cpe:2.3:h:hitachi_energy:rtu500_cmu:12.0.3:*:*:*:*:*:*:*

External links

https://ics-cert.us-cert.gov/advisories/icsa-22-235-07

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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