CVE-2021-30633: 
vulnerability analysis and mitigation

CVE-2021-30633 is a use-after-free vulnerability discovered in the Indexed DB API of Google Chrome versions prior to 93.0.4577.82. The vulnerability was disclosed on September 8, 2021, and affects Google Chrome browser installations across Windows, Mac, and Linux operating systems (Chrome Release).

The vulnerability is classified as a use-after-free bug in the Indexed DB API implementation of Chrome. It received a CVSS v3.1 base score of 9.6 (CRITICAL) with the vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H. The vulnerability could allow an attacker who had compromised the renderer process to potentially perform a sandbox escape through a specially crafted HTML page (NVD).

The vulnerability could enable a remote attacker who successfully compromises the renderer process to escape the browser's security sandbox. This could potentially lead to arbitrary code execution with elevated privileges, compromising the affected system's security (Bleeping Computer).

Google released version 93.0.4577.82 of Chrome to address this vulnerability. Users are strongly advised to update their Chrome browsers immediately to this version or later. The update was rolled out for Windows, Mac, and Linux platforms (Chrome Release).