CVE-2021-0523 : Security Advisory and Response

Android versions 10 and 11 are affected by a vulnerability that allows the enabling of Wi-Fi scanning without user consent, potentially leading to local privilege escalation. This requires user interaction for exploitation.

Understanding CVE-2021-0523

This CVE affects Android devices and involves a tapjacking/overlay attack in the WifiScanModeActivity.java file.

What is CVE-2021-0523?

The vulnerability in onCreate of WifiScanModeActivity.java allows for the unauthorized enabling of Wi-Fi scanning on Android 10 and 11 devices without user consent, which could result in a local escalation of privilege.

The Impact of CVE-2021-0523

If exploited, this vulnerability could lead to a local escalation of privilege, requiring only User execution privileges.

Technical Details of CVE-2021-0523

The vulnerability stems from a tapjacking/overlay attack in the onCreate method of the WifiScanModeActivity.java file.

Vulnerability Description

The issue permits the unauthorized activation of Wi-Fi scanning without user consent.

Affected Systems and Versions

Android versions 10 and 11 are affected by this vulnerability.

Exploitation Mechanism

Exploiting this vulnerability requires a local user to interact with a crafted application that enables Wi-Fi scanning without permission.

Mitigation and Prevention

To mitigate the risks associated with CVE-2021-0523, follow these recommendations:

Immediate Steps to Take

Users should avoid interacting with untrusted applications and ensure that their devices are updated with the latest security patches.

Long-Term Security Practices

Practice caution while installing and using applications, especially those from unknown sources. Regularly update your Android device to apply security fixes.

Patching and Updates

Stay informed about security bulletins from Android, and promptly install any security updates or patches released by the vendor.