CVE-2021-39760 : What You Need to Know

This article provides details about CVE-2021-39760, focusing on the impact, technical details, and mitigation strategies related to the vulnerability.

Understanding CVE-2021-39760

CVE-2021-39760 is a vulnerability in Android's AudioService that could potentially lead to information disclosure without the need for user interaction.

What is CVE-2021-39760?

The vulnerability in AudioService allows for the determination of whether an app is installed without proper query permissions, leading to possible local information disclosure.

The Impact of CVE-2021-39760

The exploitation of this vulnerability could result in local information disclosure without requiring additional execution privileges, posing a risk to user privacy and data security.

Technical Details of CVE-2021-39760

This section delves into the specific technical aspects of the CVE-2021-39760 vulnerability.

Vulnerability Description

The vulnerability stems from a side channel information disclosure within AudioService, enabling the identification of installed apps without the necessary permissions.

Affected Systems and Versions

Product: Android
Versions Affected: Android-12L

Exploitation Mechanism

The exploitation of this vulnerability does not require user interaction, making it more susceptible to misuse by malicious actors.

Mitigation and Prevention

To safeguard systems from CVE-2021-39760, immediate steps and long-term security practices should be implemented.

Immediate Steps to Take

Monitor official security bulletins from Android for patches related to CVE-2021-39760.
Limit app permissions to minimize the impact of potential information disclosures.

Long-Term Security Practices

Regularly update Android devices to the latest software versions to address known vulnerabilities.
Employ security awareness training to educate users on safe app installation practices.
Consider using security software that detects and mitigates information disclosure threats.

Patching and Updates

Stay informed about security updates released by Android to patch CVE-2021-39760 and similar vulnerabilities.