CVE-2020-0403 : Security Advisory and Response

Android kernel's FPC TrustZone fingerprint App is prone to an elevation of privilege vulnerability, allowing local attackers to gain system execution privileges without user interaction.

Understanding CVE-2020-0403

This CVE-2020-0403 vulnerability is classified as an elevation of privilege issue in the Android ecosystem.

What is CVE-2020-0403?

In the FPC TrustZone fingerprint App in Android, an exposed test feature may result in an invalid command handler, leading to a local privilege escalation within the Trusted Execution Environment (TEE).

The Impact of CVE-2020-0403

Local attackers can exploit this flaw to elevate their privileges within the TEE without requiring any user interaction.

Technical Details of CVE-2020-0403

This section delves into the technical aspects of the CVE.

Vulnerability Description

The vulnerability lies in the FPC TrustZone fingerprint App, potentially exposing an invalid command handler through a test feature, enabling unauthorized privilege escalation in the TEE.

Affected Systems and Versions

Product: Android
Versions: Android kernel

Exploitation Mechanism

Attackers can abuse the exposed test feature to manipulate the command handler, escalating privileges within the TEE.

Mitigation and Prevention

Safeguarding measures against CVE-2020-0403.

Immediate Steps to Take

Monitor security bulletins for patches addressing this specific vulnerability from the official Android Security Bulletin.
Apply security updates promptly to mitigate the risk of exploitation.

Long-Term Security Practices

Regularly update Android devices to include the latest security enhancements and patches.
Employ trusted app sources and security solutions to minimize the impact of potential vulnerabilities.

Patching and Updates

Install the security patch provided by Android as soon as it becomes available to address CVE-2020-0403.