CVE-2021-0398 : Security Advisory and Response

Android-11 ActiveServices.java has a vulnerability that could result in local escalation of privilege. This CVE, assigned on March 10, 2021, has the potential to impact Android devices.

Understanding CVE-2021-0398

This section will provide insights into the nature and impact of CVE-2021-0398.

What is CVE-2021-0398?

The vulnerability exists in bindServiceLocked of ActiveServices.java, potentially allowing a foreground service launch, leading to local privilege escalation. This exploit does not require user interaction, but User execution privileges are necessary for successful exploitation.

The Impact of CVE-2021-0398

The impact of this CVE is an elevation of privilege, where an attacker could potentially gain elevated access privileges on the affected Android-11 devices.

Technical Details of CVE-2021-0398

Let's delve into the technical aspects of CVE-2021-0398 to understand its scope and implications.

Vulnerability Description

The vulnerability arises due to a confused deputy scenario in bindServiceLocked of ActiveServices.java, allowing a potential foreground service launch.

Affected Systems and Versions

The affected product is Android with the specific vulnerable version being Android-11.

Exploitation Mechanism

The exploit does not require user interaction but relies on User execution privileges for successful privilege escalation.

Mitigation and Prevention

Discover the steps recommended to mitigate the risks associated with CVE-2021-0398.

Immediate Steps to Take

Immediate security measures should include monitoring and restricting access to sensitive services on Android-11 devices.

Long-Term Security Practices

Incorporating secure coding practices and regular security updates can help prevent similar privilege escalation vulnerabilities in the future.

Patching and Updates

Stay informed about official patches and updates released by Android to address CVE-2021-0398 and ensure timely application to secure devices.