Remote code execution in Mitsubishi Electric MELSEC-Q/L and MELSEC iQ-R

1) Input validation error

EUVDB-ID: #VU64386

Risk: High

CVSSv3.1: 7.1 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-25163

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the system.

The vulnerability exists due to insufficient validation of user-supplied input in various web functions. A remote attacker can pass specially crafted input to the application and execute arbitrary code on the target system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

MELSEC-Q QJ71E71-100: 24061

MELSEC-L Series LJ71E71-100: 24061

MELSEC iQ-R Series RD81MES96N: 08

CPE2.3

• cpe:2.3:h:mitsubishi_electric:QJ71E71-100:*:*:*:*:*:*:*:
• cpe:2.3:h:mitsubishi_electric:QJ71E71-100:24061:*:*:*:*:*:*:
• cpe:2.3:h:mitsubishi_electric:melsec-l_series_lj71e71-100:*:*:*:*:*:*:*:
• cpe:2.3:h:mitsubishi_electric:melsec-l_series_lj71e71-100:24061:*:*:*:*:*:*:
• cpe:2.3:h:mitsubishi_electric:melsec_iq-r_series_rd81mes96n:*:*:*:*:*:*:*:
• cpe:2.3:h:mitsubishi_electric:melsec_iq-r_series_rd81mes96n:08:*:*:*:*:*:*:

External links

http://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2022-006_en.pdf
http://jvn.jp/vu/JVNVU92561747/index.html

Q & A

Can this vulnerability be exploited remotely?

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

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected device in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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