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Improper Certificate Validation in Bitdefender Total Security HTTPS Scanning (VA-11158)

Publication date: October 18th, 2024


CVE ID:
CVE-2023-6055
CVSS scrore:
8.6 - CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N
Affected vendors:
BItdefender
Affected products:
Total Security
Vulnerability details:

A vulnerability has been identified in Bitdefender Total Security HTTPS scanning functionality where the software fails to properly validate website certificates. Specifically, if a site certificate lacks the “Server Authentication” specification in the Extended Key Usage extension, the product does not verify the certificate’s compliance with the site, deeming such certificates as valid. This flaw could allow an attacker to perform a Man-in-the-Middle (MITM) attack, intercepting and potentially altering communications between the user and the website.

Additional details:
An automatic update to product version 27.0.25.115 fixes the issue.