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Mitsubishi Electric MELSOFT MaiLab

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1. EXECUTIVE SUMMARY

  • CVSS v4 8.2
  • ATTENTION: Exploitable remotely
  • Vendor: Mitsubishi Electric Corporation
  • Equipment: MELSOFT MaiLab
  • Vulnerability: Improper Verification of Cryptographic Signature

2. RISK EVALUATION

Successful exploitation of this vulnerability could allow a remote attacker to cause a denial-of-service condition in the target product.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

Mitsubishi Electric reports that the following versions of MELSOFT MaiLab, a data science tool for manufacturing improvement, are affected:

  • MELSOFT MaiLab SW1DND-MAILAB-M: versions 1.00A to 1.05F
  • MELSOFT MaiLab SW1DND-MAILABPR-M: versions 1.00A to 1.05F

3.2 Vulnerability Overview

3.2.1 Improper Verification of Cryptographic Signature CWE-347

A denial-of-service vulnerability exists in the OpenSSL library used in MELSOFT MaiLab due to improper verification of cryptographic signature resulting from improper implementation of the POLY1305 message authentication code (MAC).

CVE-2023-4807 has been assigned to this vulnerability. A CVSS v3.1 base score of 5.9 has been calculated; the CVSS vector string is (AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H).

A CVSS v4 score has also been calculated for CVE-2023-4807. A base score of 8.2 has been calculated; the CVSS vector string is (CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N).

3.3 BACKGROUND