Learn about CVE-2021-21228, a critical vulnerability in Google Chrome. Understand its impact, affected versions, and mitigation steps against malicious extension installations.
Google Chrome prior to version 90.0.4430.93 is affected by an insufficient policy enforcement vulnerability that could allow an attacker to bypass navigation restrictions through a malicious extension.
Understanding CVE-2021-21228
This CVE identifier is assigned to a security flaw found in Google Chrome browsers before the 90.0.4430.93 version. The vulnerability stems from inadequate policy enforcement within extensions, enabling threat actors to evade navigation restrictions by coercing users to install a malicious extension in Chrome.
What is CVE-2021-21228?
The vulnerability in Google Chrome, designated as CVE-2021-21228, involves insufficient policy enforcement present in extensions. This security loophole permits attackers to trick users into installing a crafted Chrome Extension, ultimately bypassing navigation constraints.
The Impact of CVE-2021-21228
The impact of CVE-2021-21228 could be severe as threat actors can exploit this vulnerability to bypass navigation restrictions in Chrome. By convincing users to install a malicious extension, attackers can carry out unauthorized actions and potentially compromise user data.
Technical Details of CVE-2021-21228
This section will delve into the technical aspects of the CVE, including vulnerability description, affected systems and versions, and the exploitation mechanism.
Vulnerability Description
The vulnerability in Google Chrome (CVE-2021-21228) arises from insufficient policy enforcement within extensions, allowing attackers to bypass navigation restrictions using specially crafted Chrome Extensions.
Affected Systems and Versions
Google Chrome versions prior to 90.0.4430.93 are impacted by CVE-2021-21228. Users using Chrome versions below this specified version are vulnerable to exploitation.
Exploitation Mechanism
Threat actors can exploit this vulnerability by coercing users to install a malicious extension. Once installed, the extension can enable attackers to bypass navigation restrictions and conduct unauthorized activities.
Mitigation and Prevention
To mitigate the risks associated with CVE-2021-21228, users and organizations should consider immediate actions and long-term security practices to safeguard their systems.
Immediate Steps to Take
Users should update Google Chrome to version 90.0.4430.93 or later to patch the vulnerability. Additionally, ensure that only trusted extensions are installed from reputable sources.
Long-Term Security Practices
Implementing a robust security awareness program, regularly updating software, and monitoring extension installations can enhance overall security posture.
Patching and Updates
Regularly monitor security advisories from Google, apply patches promptly, and enforce a policy of installing extensions from verified sources only.