#VU79310 Path traversal in Qt - CVE-2022-25634

Vulnerability identifier: #VU79310

Vulnerability risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2022-25634

CWE-ID: CWE-22

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Qt
Universal components / Libraries / Scripting languages

Vendor: Trolltech

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 - 5.15.8, 6.0.0 - 6.0.4, 6.1.0 - 6.1.3, 6.2.0 - 6.2.3

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

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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.