CVE-2023-32762 Security feature bypass in n/a

Medium 5.3 Published 28 May 2023 Updated 19 Aug 2024

Attackers can force unencrypted connections by exploiting case-sensitive HSTS header parsing in Qt Network, bypassing security protections.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: Available

What is CVE-2023-32762?

CVE-2023-32762 is a medium-severity vulnerability in Debian Debian Linux, published on 28 May 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

An issue was discovered in Qt before 5.15.14, 6.x before 6.2.9, and 6.3.x through 6.5.x before 6.5.1. Qt Network incorrectly parses the strict-transport-security (HSTS) header, allowing unencrypted connections to be established, even when explicitly prohibited by the server. This happens if the case used for this header does not exactly match.

Which versions are affected by CVE-2023-32762?

It affects 2 products.

Linux distribution packages (1)

qt6-base openSUSE:Tumbleweed All versions 6.5.3-2.1

Products include Debian Debian Linux, Qt Qt.

How do I fix CVE-2023-32762?

Upgrade to a fixed version.

Is CVE-2023-32762 being exploited?

There is no known exploitation of CVE-2023-32762 in the wild and no public exploit code.

All Debian Debian Linux vulnerabilities

Sources

Also known as AZL-26944, CLEANSTART-2026-XN49682, DEBIAN-CVE-2023-32762, GHSA-j8jh-fhfw-jx2c, UBUNTU-CVE-2023-32762, openSUSE-SU-2024:13289-1.