CVE-2019-2090 : What You Need to Know

Android operating system vulnerability allowing local privilege escalation.

Understanding CVE-2019-2090

What is CVE-2019-2090?

The vulnerability in PackageManagerService.java allows unauthorized bypass of permissions, leading to local privilege escalation without additional permissions on Android versions 7.0 to 9.

The Impact of CVE-2019-2090

Exploiting this vulnerability could result in a local privilege escalation without the need for additional permissions, potentially compromising the security of affected Android devices.

Technical Details of CVE-2019-2090

Vulnerability Description

The vulnerability lies in the isPackageDeviceAdminOnAnyUser method in PackageManagerService.java, lacking a permissions check, enabling unauthorized bypass of permissions.

Affected Systems and Versions

Android 7.0
Android 7.1.1
Android 7.1.2
Android 8.0
Android 8.1
Android 9

Exploitation Mechanism

Lack of permissions check in the isPackageDeviceAdminOnAnyUser method
Allows unauthorized bypass of permissions
Enables local privilege escalation without additional permissions

Mitigation and Prevention

Immediate Steps to Take

Apply security patches provided by Android for the affected versions
Monitor official Android security bulletins for updates

Long-Term Security Practices

Regularly update the Android operating system to the latest version
Implement security best practices to prevent unauthorized access

Patching and Updates

Android users should ensure their devices are updated with the latest security patches