CVE-2020-6433: 
Google Chrome vulnerability analysis and mitigation

CVE-2020-6433 is a security vulnerability discovered in Google Chrome prior to version 81.0.4044.92. The vulnerability involves insufficient policy enforcement in extensions that allowed a remote attacker to bypass navigation restrictions via a crafted HTML page. The issue was disclosed and patched in April 2020 (Chrome Release).

The vulnerability is classified with a CVSS v3.1 Base Score of 4.3 (Medium), with the vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N. This indicates that the vulnerability is network-accessible, requires low attack complexity, needs no privileges, but does require user interaction. The scope is unchanged, with no impact on confidentiality, low impact on integrity, and no impact on availability (NVD).

The vulnerability could allow an attacker to bypass navigation restrictions through crafted HTML pages, potentially leading to unauthorized navigation or extension-related security control bypasses. The impact is considered low as it primarily affects the integrity of the browser's security controls without compromising confidentiality or availability (NVD).

The vulnerability was fixed in Google Chrome version 81.0.4044.92. Users and administrators are advised to upgrade to this version or later. The fix was also incorporated into various Linux distributions including Debian, Fedora, and OpenSUSE through their respective security updates (Debian Advisory, Fedora Update).