CVE-2021-23977 : Vulnerability Insights and Analysis

Firefox for Android version less than 86 is impacted by a time-of-check-time-of-use vulnerability allowing a malicious application to access sensitive data. This vulnerability does not affect other operating systems.

Understanding CVE-2021-23977

This CVE involves a security flaw in Firefox for Android that could be exploited by a malicious app to read sensitive data from application directories.

What is CVE-2021-23977?

CVE-2021-23977 is a time-of-check-time-of-use vulnerability in Firefox for Android, enabling unauthorized access to sensitive information within the app's directories.

The Impact of CVE-2021-23977

The vulnerability could lead to unauthorized access to sensitive data stored within Firefox for Android, posing a risk to user privacy and security.

Technical Details of CVE-2021-23977

This section outlines the specifics of the vulnerability, including affected systems, versions, and the exploitation mechanism.

Vulnerability Description

Firefox for Android < 86 is susceptible to a time-of-check-time-of-use vulnerability that enables unauthorized access to sensitive data stored in application directories.

Affected Systems and Versions

The vulnerability affects Firefox for Android versions prior to version 86. Other operating systems are not impacted by this specific issue.

Exploitation Mechanism

Malicious applications can exploit this vulnerability to read sensitive data from Firefox for Android's application directories.

Mitigation and Prevention

To address CVE-2021-23977, it is crucial to implement immediate and long-term security measures, including applying patches and updates.

Immediate Steps to Take

Users should update Firefox for Android to version 86 or higher to mitigate the risk of exploitation and ensure data security.

Long-Term Security Practices

Practicing safe browsing habits, utilizing security software, and being cautious with app permissions can enhance overall cybersecurity.

Patching and Updates

Regularly check for updates and apply patches released by Mozilla to address security vulnerabilities and protect against potential exploits.