Denial of service in Mitsubishi Electric MELSOFT MaiLab

1) Input validation error

EUVDB-ID: #VU80565

Risk: Low

CVSSv4.0: 1.7 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-4807

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

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 within the POLY1305 MAC (message authentication code) implementation. A remote attacker can send specially crafted input to the application and corrupt MM registers on Windows 64 platform, resulting in a denial of service condition.

Mitigation

Install update from vendor's website.

Vulnerable software versions

MELSOFT MaiLab SW1DND-MAILABPR-M: - - 1.05F

MELSOFT MaiLab SW1DND-MAILAB-M: - - 1.05F

CPE2.3

• cpe:2.3:a:mitsubishi_electric:melsoft_mailab_sw1dnd-mailabpr-m:*:*:*:*:*:*:*:*
• cpe:2.3:a:mitsubishi_electric:melsoft_mailab_sw1dnd-mailabpr-m:1.00A:*:*:*:*:*:*:*
• cpe:2.3:a:mitsubishi_electric:melsoft_mailab_sw1dnd-mailabpr-m:1.05F:*:*:*:*:*:*:*
• cpe:2.3:a:mitsubishi_electric:melsoft_mailab_sw1dnd-mailab-m:*:*:*:*:*:*:*:*
• cpe:2.3:a:mitsubishi_electric:melsoft_mailab_sw1dnd-mailab-m:1.00A:*:*:*:*:*:*:*
• cpe:2.3:a:mitsubishi_electric:melsoft_mailab_sw1dnd-mailab-m:1.05F:*:*:*:*:*:*:*

External links

https://www.cisa.gov/news-events/ics-advisories/icsa-24-200-01
https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2024-005_en.pdf

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.