CVE-2020-0398 : Security Advisory and Response

Android's updateMwi in NotificationMgr.java allows a possible permission bypass, potentially leading to local info disclosure. The CVE affects Android versions 10 and 11.

Understanding CVE-2020-0398

This CVE highlights a vulnerability in Android's updateMwi function in NotificationMgr.java, potentially enabling unauthorized access to sensitive information without user interaction.

What is CVE-2020-0398?

The CVE-2020-0398 vulnerability in Android involves a PendingIntent error in updateMwi, which could permit a permission bypass. There is a risk of disclosing local information without requiring user interaction, albeit requiring User execution privileges for exploitation.

The Impact of CVE-2020-0398

The CVE-2020-0398 issue in Android can lead to local information disclosure, escalating the risk of unauthorized access to sensitive data.

Technical Details of CVE-2020-0398

Android's vulnerability description, affected systems, and exploitation mechanism.

Vulnerability Description

The updateMwi function in NotificationMgr.java presents a vulnerability that could enable a permission bypass, potentially leading to local information disclosure.

Affected Systems and Versions

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

Exploitation Mechanism

The vulnerability can be exploited by leveraging the PendingIntent error in the updateMwi function, bypassing permissions and potentially disclosing local information.

Mitigation and Prevention

Steps to address and prevent the CVE-2020-0398 vulnerability in Android.

Immediate Steps to Take

Update Android to the latest version that includes a fix for CVE-2020-0398
Monitor for any signs of unauthorized access or information disclosure
Implement strict access controls to limit potential exploitation of vulnerabilities

Long-Term Security Practices

Regularly update Android systems to ensure all security patches are applied promptly
Conduct thorough security assessments and audits to identify and remediate any potential vulnerabilities
Train users on security best practices to minimize the risk of exploitation

Patching and Updates

Apply all relevant security patches and updates provided by Android to address the CVE-2020-0398 vulnerability effectively.