Path traversal in Qt

1) Path traversal

EUVDB-ID: #VU79310

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-25634

CWE-ID: CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform directory traversal attacks.

The vulnerability exists due to input validation error when processing directory traversal sequences. A remote attacker can send a specially crafted HTTP request and read arbitrary files on the system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Qt: 5.15.0 - 6.2.3

External links

http://codereview.qt-project.org/c/qt/qtbase/+/396689
http://download.qt.io/official_releases/qt/6.2/CVE-2022-25643-6.2.diff
http://download.qt.io/official_releases/qt/5.15/CVE-2022-25643-5.15.diff
http://codereview.qt-project.org/c/qt/tqtc-qtbase/+/396690
http://codereview.qt-project.org/c/qt/qtbase/+/396440

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.