CVE-2021-0604 : Exploit Details and Defense Strategies

This article provides details about CVE-2021-0604, a vulnerability in Android that could potentially lead to local information disclosure through Bluetooth.

Understanding CVE-2021-0604

This section delves into the nature of the CVE-2021-0604 vulnerability and its implications.

What is CVE-2021-0604?

CVE-2021-0604 is a vulnerability in Android that exists in the generateFileInfo function of BluetoothOppSendFileInfo.java. It allows for the sharing of private files over Bluetooth, leading to potential local information disclosure with no additional execution privileges required. Exploitation of this vulnerability necessitates user interaction.

The Impact of CVE-2021-0604

The impact of this vulnerability is the potential disclosure of sensitive local information without the need for elevated privileges, posing a risk to user privacy and data security.

Technical Details of CVE-2021-0604

This section provides technical insights into the CVE-2021-0604 vulnerability.

Vulnerability Description

The vulnerability in the generateFileInfo function of BluetoothOppSendFileInfo.java allows for the sharing of private files over Bluetooth, enabling local information disclosure without additional execution privileges.

Affected Systems and Versions

The affected product is Android, with versions Android-8.1, Android-9, Android-10, and Android-11 all being impacted by CVE-2021-0604.

Exploitation Mechanism

Exploiting CVE-2021-0604 requires user interaction to share private files over Bluetooth, leading to potential local information disclosure.

Mitigation and Prevention

This section outlines the steps to mitigate and prevent exploitation of CVE-2021-0604.

Immediate Steps to Take

Users should exercise caution when sharing files over Bluetooth and avoid sharing sensitive or private information via this method to prevent potential information disclosure.

Long-Term Security Practices

Employing secure file-sharing practices, restricting Bluetooth file sharing to trusted devices, and keeping systems updated are essential for long-term security.

Patching and Updates

Vendor patches and system updates must be promptly applied to address CVE-2021-0604 and prevent potential exploitation.