CVE-2021-41146 Information

Description

qutebrowser is an open source keyboard-focused browser with a minimal GUI. Starting with qutebrowser v1.7.0 the Windows installer for qutebrowser registers a qutebrowserurl: URL handler. With certain applications opening a specially crafted qutebrowserurl:... URL can lead to execution of qutebrowser commands which in turn allows arbitrary code execution via commands such as :spawn or :debug-pyeval. Only Windows installs where qutebrowser is registered as URL handler are affected. The issue has been fixed in qutebrowser v2.4.0. The fix also adds additional hardening for potential similar issues on Linux (by adding the new –untrusted-args flag to the .desktop file) though no such vulnerabilities are known.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Reference

https://github.com/qutebrowser/qutebrowser/security/advisories/GHSA-vw27-fwjf-5qxm https://github.com/qutebrowser/qutebrowser/commit/8f46ba3f6dc7b18375f7aa63c48a1fe461190430 qutebrowser is an open source keyboard-focused browser with a minimal GUI. Starting with qutebrowser v1.7.0 the Windows installer for qutebrowser registers a qutebrowserurl: URL handler. With certain applications opening a specially crafted qutebrowserurl:... URL can lead to execution of qutebrowser commands which in turn allows arbitrary code execution via commands such as :spawn or :debug-pyeval. Only Windows installs where qutebrowser is registered as URL handler are affected. The issue has been fixed in qutebrowser v2.4.0. The fix also adds additional hardening for potential similar issues on Linux (by adding the new –untrusted-args flag to the .desktop file) though no such vulnerabilities are known.

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

REQUIRED

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

8.8