CVE-2021-0444 : Exploit Details and Defense Strategies

Android devices running Android-11, Android-8.1, Android-9, and Android-10 are affected by a vulnerability in QuickContactActivity.java. The vulnerability may disclose local contact data without the need for additional privileges.

Understanding CVE-2021-0444

This CVE identifies an information disclosure vulnerability in Android operating systems.

What is CVE-2021-0444?

The issue occurs in the onActivityResult of QuickContactActivity.java, allowing the disclosure of contact data without requiring extra permissions. Exploitation necessitates user interaction.

The Impact of CVE-2021-0444

The vulnerability could be exploited to disclose sensitive contact information from Android devices, posing a risk to user privacy.

Technical Details of CVE-2021-0444

This section provides a detailed overview of the vulnerability.

Vulnerability Description

The problem lies in the inadvertent return of an intent in QuickContactActivity.java, potentially leading to the unauthorized disclosure of contact data.

Affected Systems and Versions

Android devices running Android-11, Android-8.1, Android-9, and Android-10 are vulnerable to this exploit.

Exploitation Mechanism

Exploiting this vulnerability requires user interaction but does not mandate any additional execution privileges.

Mitigation and Prevention

Explore the steps to mitigate and prevent potential exploitation of CVE-2021-0444.

Immediate Steps to Take

Users are advised to exercise caution while interacting with apps or services that request contact information to prevent potential data leakage.

Long-Term Security Practices

Implementing regular security updates and being cautious of permissions granted to applications can help enhance device security.

Patching and Updates

It is crucial for Android users to install security patches provided by the vendor to safeguard against known vulnerabilities.