CVE-2021-30581: 
vulnerability analysis and mitigation

CVE-2021-30581 is a medium severity vulnerability affecting Google Chrome's DevTools component prior to version 92.0.4515.107. The vulnerability was discovered and reported by David Erceg on March 31, 2021, and was fixed in the Chrome stable channel update released on July 20, 2021 (Chrome Release).

The vulnerability is classified as a Use-After-Free (UAF) issue in the DevTools component of Google 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. The vulnerability allows an attacker who convinces a user to install a malicious extension to potentially exploit heap corruption via a crafted HTML page (NVD).

If successfully exploited, this vulnerability could allow an attacker to execute arbitrary code within the context of the browser, potentially leading to system compromise. The attack requires user interaction in the form of installing a malicious extension, which somewhat mitigates the severity of the vulnerability (NVD).

The vulnerability was patched in Chrome version 92.0.4515.107. Users and administrators are advised to update to this version or later to mitigate the risk. The fix was also backported to various Linux distributions including Fedora 33, 34, and 35 (Fedora Update).