CVE-2021-4065: 
vulnerability analysis and mitigation

A use-after-free vulnerability (CVE-2021-4065) was discovered in the autofill feature of Google Chrome versions prior to 96.0.4664.93. This security flaw was reported by 5n1p3r0010 from Topsec ChiXiao Lab on November 25, 2021 (Chrome Release).

The vulnerability is classified as a use-after-free bug specifically affecting the autofill functionality in Chrome. It has been assigned a CVSS v3.1 base score of 8.8 (HIGH) with the vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H, indicating network accessibility, low attack complexity, no privileges required, and user interaction required for exploitation (NVD).

If successfully exploited, this vulnerability could allow a remote attacker to potentially exploit heap corruption through a specially crafted HTML page, potentially leading to arbitrary code execution with the same privileges as the Chrome browser process (NVD, Debian Advisory).

The vulnerability was patched in Chrome version 96.0.4664.93. Users and administrators are advised to upgrade to this version or later. Various Linux distributions have also released security updates to address this vulnerability, including Debian (97.0.4692.71-0.1~deb11u1), Fedora, and Gentoo (Debian Advisory, Gentoo Advisory).