CVE-2021-0691 Explained : Impact and Mitigation

Android devices running on Android-11 are impacted by CVE-2021-0691 due to an overly-permissive SELinux policy in the system_app.te configuration. This vulnerability could allow system_app to execute code in other processes, leading to a local privilege escalation without the need for user interaction.

Understanding CVE-2021-0691

This CVE affects Android devices using Android-11 with a vulnerable SELinux policy.

What is CVE-2021-0691?

CVE-2021-0691 involves a security vulnerability in the SELinux policy of system_app.te that enables system_app to execute code in other processes.

The Impact of CVE-2021-0691

The vulnerability could result in a local escalation of privilege, granting unauthorized access to system execution privileges without requiring user interaction.

Technical Details of CVE-2021-0691

This section provides deeper insights into the vulnerability

Vulnerability Description

The issue arises from the overly-permissive SELinux policy in the system_app.te configuration, allowing the system_app to gain code execution in other processes.

Affected Systems and Versions

Android devices using Android-11 are affected by this vulnerability.

Exploitation Mechanism

Exploitation of this vulnerability could lead to a local escalation of privilege without user interaction.

Mitigation and Prevention

Protect your device by following the steps below

Immediate Steps to Take

Implementing security updates and patches provided by the device manufacturer is crucial to mitigate this vulnerability.

Long-Term Security Practices

Enforce strict security policies, regularly update your device's operating system, and avoid downloading apps from untrusted sources.

Patching and Updates

Stay informed about system updates and security bulletins released by Android to ensure your device is protected.