CVE-2021-4101: 
vulnerability analysis and mitigation

A heap buffer overflow vulnerability was discovered in Swiftshader component of Google Chrome versions prior to 96.0.4664.110. The vulnerability, identified as CVE-2021-4101, was reported on October 21, 2021, and publicly disclosed on December 13, 2021. This security flaw affected Google Chrome installations across Windows, Mac, and Linux operating systems (Chrome Release).

The vulnerability is classified as a heap buffer overflow (CWE-787: Out-of-bounds Write) in the Swiftshader component. It received 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 could be triggered through a specially crafted HTML page, indicating that user interaction would be required for successful exploitation (NVD).

The vulnerability could allow a remote attacker to potentially exploit heap corruption, which could lead to arbitrary code execution within the context of the browser. Given the high CVSS score and the potential for heap corruption, successful exploitation could compromise the confidentiality, integrity, and availability of the affected system (NVD).

Google addressed this vulnerability in Chrome version 96.0.4664.110. Users are advised to update to this version or later to mitigate the risk. The update was released for Windows, Mac, and Linux platforms, including the extended stable channel (Chrome Release).