CVE-2021-21229 : Exploit Details and Defense Strategies

A vulnerability in Google Chrome on Android allowed a remote attacker to perform domain spoofing through a crafted HTML page.

Understanding CVE-2021-21229

This vulnerability, assigned CVE-2021-21229, affects Chrome versions prior to 90.0.4430.93 on Android devices.

What is CVE-2021-21229?

The CVE-2021-21229 vulnerability in Google Chrome on Android allowed a remote attacker to exploit an incorrect security UI in downloads, leading to domain spoofing through a crafted HTML page.

The Impact of CVE-2021-21229

This vulnerability could be exploited by a remote attacker to perform domain spoofing, potentially leading to phishing attacks and manipulation of user data.

Technical Details of CVE-2021-21229

This section provides technical insights into the vulnerability.

Vulnerability Description

The incorrect security UI in downloads in Google Chrome on Android versions prior to 90.0.4430.93 allowed a remote attacker to perform domain spoofing via a crafted HTML page.

Affected Systems and Versions

Google Chrome on Android devices with versions less than 90.0.4430.93 is affected by this vulnerability.

Exploitation Mechanism

By leveraging the incorrect security UI in Chrome downloads, a remote attacker could create a crafted HTML page to exploit domain spoofing.

Mitigation and Prevention

To protect systems and data from CVE-2021-21229, follow these mitigation strategies:

Immediate Steps to Take

Update Google Chrome on Android devices to version 90.0.4430.93 or later.
Exercise caution while clicking on unknown links and downloading files.

Long-Term Security Practices

Regularly update browsers and applications to the latest versions.
Educate users about safe browsing practices and the risks of phishing attacks.

Patching and Updates

Stay informed about security advisories and patches released by Google Chrome and promptly apply them to ensure protection against known vulnerabilities.