#VU63470 Input validation error in Mitsubishi Electric products - CVE-2022-25161

Vulnerability identifier: #VU63470

Vulnerability risk: High

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:Amber]

CVE-ID: CVE-2022-25161

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
MELSEC iQ-F FX5U
Hardware solutions / Routers & switches, VoIP, GSM, etc
MELSEC iQ-F series FX5U(C) CPU module
Hardware solutions / Routers & switches, VoIP, GSM, etc
MELSEC iQ-F FX5UC-32MT/DS-TS
Hardware solutions / Routers & switches, VoIP, GSM, etc
MELSEC iQ-F FX5UC-32MT/DSS-TS
Hardware solutions / Routers & switches, VoIP, GSM, etc
MELSEC iQ-F FX5UC-32MR/DS-TS
Hardware solutions / Routers & switches, VoIP, GSM, etc
MELSEC iQ-F Series FX5UJ CPU module
Hardware solutions / Routers & switches, VoIP, GSM, etc

Vendor: Mitsubishi Electric

Description

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

The vulnerability exists due to insufficient validation of user-supplied input. A remote attacker can pass specially crafted input to the application and perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

MELSEC iQ-F FX5U: before 1.270

MELSEC iQ-F series FX5U(C) CPU module: before 1.270

MELSEC iQ-F FX5UC-32MT/DS-TS: before 1.270

MELSEC iQ-F FX5UC-32MT/DSS-TS: before 1.270

MELSEC iQ-F FX5UC-32MR/DS-TS: before 1.270

MELSEC iQ-F Series FX5UJ CPU module: before 1.030

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External links
https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2022-004_en.pdf
https://jvn.jp/vu/JVNVU95926817/index.html
https://www.ptsecurity.com/ww-en/analytics/threatscape/pt-2021-14/

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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.