CVE-2021-0506 Explained : Impact and Mitigation

This CVE-2021-0506 article provides detailed information about a security vulnerability impacting Android devices. The vulnerability exists in ActivityPicker.java, potentially enabling a local escalation of privilege through a tapjacking/overlay attack.

Understanding CVE-2021-0506

CVE-2021-0506 is classified as an elevation of privilege vulnerability affecting Android devices.

What is CVE-2021-0506?

The vulnerability in ActivityPicker.java allows an attacker to bypass user interaction during intent resolution, leading to a local escalation of privilege on affected Android versions (Android-10, Android-11, Android-8.1, Android-9).

The Impact of CVE-2021-0506

Exploiting this vulnerability requires user interaction but could result in an unauthorized elevation of privileges on the device.

Technical Details of CVE-2021-0506

This section delves into the specific technical aspects of the CVE.

Vulnerability Description

The flaw in ActivityPicker.java enables an attacker to perform a tapjacking/overlay attack, bypassing user interaction in intent resolution.

Affected Systems and Versions

Android versions Android-10, Android-11, Android-8.1, and Android-9 are susceptible to this privilege escalation vulnerability.

Exploitation Mechanism

Successful exploitation necessitates user interaction, exploiting the tapjacking/overlay attack to elevate privileges.

Mitigation and Prevention

To safeguard your Android device, immediate steps as well as long-term security practices are crucial.

Immediate Steps to Take

Users should remain cautious while interacting with intents on Android devices to prevent unauthorized privilege escalation.

Long-Term Security Practices

Implementing secure coding practices and staying updated on security bulletins can help mitigate such vulnerabilities.

Patching and Updates

Regularly applying security patches and updates released by Android can address known vulnerabilities and enhance device security.