Authentication Bypass by Capture-replay in Mitsubishi Electric MELSEC WS Series Ethernet Interface Module

1) Authentication Bypass by Capture-replay

EUVDB-ID: #VU85930

Risk: Medium

CVSSv3.1: 5.4 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N/E:U/RL:U/RC:C]

CVE-ID: CVE-2023-6374

CWE-ID: CWE-294 - Authentication Bypass by Capture-replay

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass authentication process.

The vulnerability exists due to authentication bypass by capture-replay. A remote attacker can disclose or tamper with the programs and parameters in the modules.

Mitigation

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

Vulnerable software versions

WS0-GETH00200: All versions

External links

http://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2023-019_en.pdf
http://jvn.jp/vu/JVNVU99497477
http://www.cisa.gov/news-events/ics-advisories/icsa-24-030-03

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.