CVE-2020-0203 : Security Advisory and Response

Android's freeIsolatedUidLocked function in ProcessList.java may lead to local privilege escalation between processes without additional privileges.

Understanding CVE-2020-0203

This CVE involves a vulnerability in Android-10 that could result in an elevation of privilege.

What is CVE-2020-0203?

The vulnerability lies in freeIsolatedUidLocked function, allowing UID reuse due to improper cleanup.
Potential local escalation of privilege between constrained processes may occur without requiring user interaction.

The Impact of CVE-2020-0203

Local privilege escalation within Android-10 environments, potentially compromising system security.

Technical Details of CVE-2020-0203

The technical details of the vulnerability are as follows:

Vulnerability Description

Improper cleanup in freeIsolatedUidLocked function leads to possible UID reuse.

Affected Systems and Versions

Product: Android
Version: Android-10

Exploitation Mechanism

Attackers exploit the UID reuse flaw to elevate their privileges locally within Android-10.

Mitigation and Prevention

Steps to address and prevent the CVE-2020-0203 vulnerability:

Immediate Steps to Take

Apply security patches and updates provided by Android promptly.
Monitor for any signs of unauthorized privilege elevation.

Long-Term Security Practices

Regularly update Android devices with the latest security patches.
Implement strict access controls and privilege separation mechanisms.

Patching and Updates

Stay informed about security bulletins from Android and apply patches without delay.