CVE-2020-0052 : Vulnerability Insights and Analysis

Android: Local Privilege Escalation via SMS Bypass

Understanding CVE-2020-0052

What is CVE-2020-0052?

CVE-2020-0052 is a vulnerability in Android that allows local privilege escalation through a permissions bypass in the AnswerFragment.java file, specifically in the smsSelected function. User interaction is required for exploitation.

The Impact of CVE-2020-0052

This vulnerability could result in an attacker being able to send an SMS from the lock screen, leading to a local escalation of privilege without requiring additional execution privileges.

Technical Details of CVE-2020-0052

Vulnerability Description

Vulnerability Type: Elevation of privilege
Location: AnswerFragment.java (smsSelected function)

Affected Systems and Versions

Affected Product: Android
Affected Version: Android-10

Exploitation Mechanism

Attacker can exploit the vulnerability by manipulating the permissions bypass in the smsSelected function to send an SMS from the lock screen.

Mitigation and Prevention

Immediate Steps to Take

Users should be cautious when interacting with the lock screen and avoid granting unnecessary permissions.
Regularly update the device to the latest security patches provided by the vendor.

Long-Term Security Practices

Implement strong security measures such as PIN or biometric authentication on the lock screen.
Stay informed about security bulletins and advisories related to Android.

Patching and Updates

Apply security patches as soon as they are released by Android to address the vulnerability.