CVE-2020-0414 : Exploit Details and Defense Strategies

In AudioFlinger::RecordThread::threadLoop of audioflinger/Threads.cpp, there is a possible non-silenced audio buffer due to a permissions bypass, leading to remote information disclosure on Android-10 and Android-11 without additional execution privileges.

Understanding CVE-2020-0414

This CVE identifies an information disclosure vulnerability in Android devices.

What is CVE-2020-0414?

The CVE-2020-0414 vulnerability exists in the AudioFlinger::RecordThread::threadLoop component of audioflinger/Threads.cpp in Android-10 and Android-11. It allows a non-silenced audio buffer due to a permissions bypass, potentially leading to remote information disclosure.

The Impact of CVE-2020-0414

The vulnerability may result in a non-silenced audio buffer, facilitating remote information disclosure without additional execution privileges, contingent on user interaction.

Technical Details of CVE-2020-0414

This section delves into the technical aspects of the CVE.

Vulnerability Description

The flaw in AudioFlinger::RecordThread::threadLoop allows for a non-silenced audio buffer owing to a permissions bypass, opening the possibility of remote information disclosure.

Affected Systems and Versions

Affected Product: Android
Affected Versions: Android-10, Android-11

Exploitation Mechanism

The vulnerability requires user interaction to exploit.

Mitigation and Prevention

Preventive measures to address the CVE-2020-0414 vulnerability.

Immediate Steps to Take

Apply security patches provided by the vendor.
Be cautious of suspicious applications requesting audio-related permissions.

Long-Term Security Practices

Regularly update the operating system and applications on the device.
Monitor security bulletins from the vendor for any new vulnerabilities.

Patching and Updates

Install the security patch released by Android to mitigate the vulnerability.