Vulnerability identifier: #VU76666

Vulnerability risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-32762

CWE-ID: CWE-319

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Qt
Universal components / Libraries / Scripting languages

Vendor: Trolltech

Description

The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due to Qt Network incorrectly parses the strict-transport-security (HSTS) header, allowing unencrypted connections to be established, even when explicitly prohibited by the server. A remote attacker with ability to intercept network traffic can gain access to sensitive data.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Qt: 5.15.0 - 5.15.13, 6.2.0 - 6.2.8, 6.5.0

---

External links
http://lists.qt-project.org/pipermail/announce/2023-May/000414.html
http://github.com/qt/qtbase/commit/1b736a815be0222f4b24289cf17575fc15707305
http://codereview.qt-project.org/c/qt/qtbase/+/476140

---

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.