CVE-2020-0401 Explained : Impact and Mitigation

Android setInstallerPackageName in PackageManagerService.java allows for local privilege escalation with missing permission checks, impacting Android versions 8.0 to 11.

Understanding CVE-2020-0401

This CVE details a vulnerability in Android that can result in the escalation of privileges.

What is CVE-2020-0401?

The vulnerability resides in setInstallerPackageName of PackageManagerService.java
It lacks a necessary permission check, potentially leading to local privilege escalation
Exploitation does not require user interaction

The Impact of CVE-2020-0401

Allows unauthorized access to sensitive resources and data on affected Android devices
Enables attackers to execute malicious activities with elevated privileges
Poses a significant security threat to the confidentiality and integrity of user data

Technical Details of CVE-2020-0401

The following provides technical insights into the vulnerability:

Vulnerability Description

Located in setInstallerPackageName of PackageManagerService.java
Allows for privilege escalation without the required permission check
Exploitation can grant unprivileged users unnecessary permissions

Affected Systems and Versions

Product: Android
Versions: Android-8.0 to Android-11

Exploitation Mechanism

An attacker can exploit this vulnerability to gain elevated privileges and access sensitive data
The absence of a permission check facilitates the unauthorized granting of additional permissions

Mitigation and Prevention

To safeguard systems against CVE-2020-0401, the following measures are recommended:

Immediate Steps to Take

Apply security patches provided by the vendor promptly
Monitor for any unauthorized access or unusual activities on the affected systems
Implement stringent access control policies to limit privilege escalation

Long-Term Security Practices

Regularly update the Android OS to the latest versions to ensure security enhancements
Conduct security training for users and administrators to raise awareness of potential threats

Patching and Updates

Stay informed about security bulletins and updates from Android
Regularly check for and apply security patches to address known vulnerabilities