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
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