CVE-2021-29963 : Security Advisory and Response

A vulnerability in Firefox for Android allowed address bar search suggestions in private browsing mode to reuse session data from normal mode, affecting versions of Firefox below 89.

Understanding CVE-2021-29963

This CVE details how shared cookies for search suggestions in private browsing mode could pose a risk to user privacy.

What is CVE-2021-29963?

The vulnerability in Firefox for Android enabled the reuse of session data for address bar search suggestions in private browsing mode, impacting versions below 89.

The Impact of CVE-2021-29963

This vulnerability could potentially compromise user privacy by allowing the sharing of cookies for search suggestions in private browsing mode.

Technical Details of CVE-2021-29963

This section outlines the specifics of the vulnerability.

Vulnerability Description

The flaw in Firefox for Android permitted address bar search suggestions in private browsing mode to utilize session data from normal mode, affecting versions prior to 89.

Affected Systems and Versions

Mozilla Firefox versions below 89, specifically on the Android platform, are susceptible to this vulnerability.

Exploitation Mechanism

Attackers could potentially exploit this vulnerability to access shared cookies for search suggestions in private browsing mode on Firefox for Android.

Mitigation and Prevention

Discover how to address and prevent the security risks associated with CVE-2021-29963.

Immediate Steps to Take

Users are advised to update their Firefox browsers to version 89 or higher to mitigate the risks associated with shared cookies in private browsing mode.

Long-Term Security Practices

Ensure regular updates and security checks on Firefox browsers to prevent similar vulnerabilities in the future.

Patching and Updates

Stay informed about the latest security patches and updates released by Mozilla to protect against CVE-2021-29963.