Denial of service in Mitsubishi Electric MELSEC iQ-R, iQ-L Series and MELIPC Series

1) Improper Resource Shutdown or Release

EUVDB-ID: #VU70639

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-33324

CWE-ID: CWE-404 - Improper Resource Shutdown or Release

Exploit availability: No

Description

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

The vulnerability exists due to improper resource shutdown or release. 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-R 00 CPU: 32

MELSEC iQ-R 01 CPU: 32

MELSEC iQ-R 02 CPU: 32

MELSEC iQ-R 04 (EN) CPU: 65

MELSEC iQ-R 08 (EN) CPU: 65

MELSEC iQ-R 16 (EN) CPU: 65

MELSEC iQ-R 32 (EN) CPU: 65

MELSEC iQ-R 120 (EN) CPU: 65

MELSEC iQ-R 08 SFCPU: All versions

MELSEC iQ-R 16 SFCPU: All versions

MELSEC iQ-R 32 SFCPU: All versions

MELSEC iQ-R 120 SFCPU: All versions

MELSEC iQ-L 04 HCPU: All versions

MELSEC iQ-L 08 HCPU: All versions

MELSEC iQ-L 16 HCPU: All versions

MELSEC iQ-L 32 HCPU: All versions

MELIPC Series MI5122-VW: All versions

External links

http://www.cisa.gov/uscert/ics/advisories/icsa-22-356-03
http://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2022-018_en.pdf
http://jvn.jp/vu/JVNVU96883262

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.