CVE-2023-49567 Insecure Trust of certificates using collision hash functions in Bitdefender Total Security HTTPS Scanning (VA-11239)

High 8.6 Published 18 Oct 2024 Updated 18 Oct 2024

Attackers can perform man-in-the-middle attacks by exploiting weak certificate validation using MD5 and SHA1 hash functions in HTTPS scanning.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Local or same network only
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2023-49567?

CVE-2023-49567 is a high-severity vulnerability in Bitdefender Total Security, published on 18 Oct 2024. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

A vulnerability has been identified in the Bitdefender Total Security HTTPS scanning functionality where the product incorrectly checks the site's certificate, which allows an attacker to make MITM SSL connections to an arbitrary site. The product trusts certificates that are issued using the MD5 and SHA1 collision hash functions which allow attackers to create rogue certificates that appear legitimate.

Weakness: CWE-295

Which versions are affected by CVE-2023-49567?

It affects 1 product.

Products include Bitdefender Total Security.

How do I fix CVE-2023-49567?

No fix has been published for CVE-2023-49567 yet. Limit exposure of the affected software until one is available.

Is CVE-2023-49567 being exploited?

There is no known exploitation of CVE-2023-49567 in the wild and no public exploit code.

Sources

Also known as GHSA-f28x-wgjx-v8hh.