CVE-2021-0337 : Vulnerability Insights and Analysis

A file exposure vulnerability, identified as CVE-2021-0337, affects Android versions 8.1, 9, 10, and 11. This security flaw in moveInMediaStore of FileSystemProvider.java can potentially lead to privilege escalation without the need for user interaction.

Understanding CVE-2021-0337

This section will provide an in-depth analysis of the CVE-2021-0337 vulnerability.

What is CVE-2021-0337?

CVE-2021-0337 is a file exposure vulnerability in Android's FileSystemProvider.java, allowing for local privilege escalation.

The Impact of CVE-2021-0337

Exploitation of this vulnerability could result in an attacker gaining elevated privileges without requiring user interaction.

Technical Details of CVE-2021-0337

Let's delve into the technical aspects of CVE-2021-0337 to better understand its implications.

Vulnerability Description

The vulnerability lies in the moveInMediaStore function of FileSystemProvider.java, leading to a potential file exposure due to stale metadata.

Affected Systems and Versions

Android versions 8.1, 9, 10, and 11 are impacted by this vulnerability, exposing them to the risk of local privilege escalation.

Exploitation Mechanism

Attackers can exploit CVE-2021-0337 to gain escalated privileges without needing user interaction.

Mitigation and Prevention

To safeguard systems from the risks posed by CVE-2021-0337, certain mitigation strategies and security practices need to be implemented.

Immediate Steps to Take

It is crucial to apply security patches promptly and monitor for any unusual file access activities on the affected Android versions.

Long-Term Security Practices

Regular security updates, access control mechanisms, and user permission reviews are essential for maintaining a secure Android environment.

Patching and Updates

Vendors should prioritize releasing patches for Android versions 8.1, 9, 10, and 11 to address the CVE-2021-0337 vulnerability effectively.