CVE-2021-0511 Explained : Impact and Mitigation

A security vulnerability, CVE-2021-0511, was identified in the Android operating system that could allow an attacker to escalate privileges locally without requiring additional execution privileges.

Understanding CVE-2021-0511

This section delves into the details of the CVE-2021-0511 vulnerability.

What is CVE-2021-0511?

CVE-2021-0511 is a vulnerability found in Dex2oat of dex2oat.cc in the Android OS, enabling potential bytecode injection into an application due to inadequate input validation. This flaw could allow an attacker to gain local privilege escalation without the need for user interaction.

The Impact of CVE-2021-0511

The impact of this vulnerability is the potential local escalation of privilege within Android versions 9, 10, and 11 without requiring any additional execution privileges.

Technical Details of CVE-2021-0511

This section outlines the technical aspects of CVE-2021-0511.

Vulnerability Description

The vulnerability lies in the improper input validation in Dex2oat, providing a route for injecting bytecode into an app.

Affected Systems and Versions

The affected systems include Android versions 9, 10, and 11.

Exploitation Mechanism

The exploitation of this vulnerability does not necessitate any user interaction.

Mitigation and Prevention

Here are the mitigation strategies to address CVE-2021-0511.

Immediate Steps to Take

Stay updated with security bulletins from Android.
Apply patches and updates promptly to mitigate the risk.

Long-Term Security Practices

Implement secure coding practices to prevent similar vulnerabilities.
Regularly monitor for security advisories and updates.

Patching and Updates

Ensure timely installation of security patches released by Android to safeguard against CVE-2021-0511.