CVE-2020-0440 : What You Need to Know

Android vulnerability leading to local privilege escalation.

Understanding CVE-2020-0440

A security vulnerability in Android-11 can allow local attackers to escalate privileges without additional permissions.

What is CVE-2020-0440?

In the createVirtualDisplay function of DisplayManagerService.java, a missing permission check could enable a trusted virtual display to be created, facilitating local privilege escalation.

The Impact of CVE-2020-0440

Attackers could locally escalate their privileges without requiring extra execution privileges.
Exploitation does not depend on user interaction.

Technical Details of CVE-2020-0440

A vulnerability allowing unprivileged local users to elevate their privileges on Android-11.

Vulnerability Description

A missing permission check in createVirtualDisplay can result in the creation of a trusted virtual display, leading to privilege escalation.

Affected Systems and Versions

Product: Android
Versions Affected: Android-11

Exploitation Mechanism

Local attackers can exploit this vulnerability without the need for additional execution privileges.

Mitigation and Prevention

Steps to prevent and mitigate the CVE-2020-0440 Android vulnerability.

Immediate Steps to Take

Apply security patches provided by the vendor promptly to address the vulnerability.
Monitor official sources for security bulletins and updates regarding this issue.

Long-Term Security Practices

Regularly update the Android operating system to safeguard against known vulnerabilities.
Implement security best practices to minimize the risk of privilege escalation attacks.

Patching and Updates

Remain vigilant for security updates and apply them as soon as they are released to protect against potential exploits.