CVE-2021-39749 : Exploit Details and Defense Strategies

This CVE-2021-39749 article provides detailed information about a vulnerability in Android-12L related to an elevation of privilege issue.

Understanding CVE-2021-39749

This section delves into the specifics of the CVE-2021-39749 vulnerability in Android-12L.

What is CVE-2021-39749?

In WindowManager, a vulnerability exists that allows the initiation of non-exported and protected activities without the necessary permission check. This flaw could result in a local escalation of privilege without requiring additional execution privileges. Notably, user interaction is not a prerequisite for exploitation.

The Impact of CVE-2021-39749

The vulnerability could potentially allow an attacker to elevate privileges locally without needing further access rights or user interaction.

Technical Details of CVE-2021-39749

This section provides a technical breakdown of the CVE-2021-39749 vulnerability.

Vulnerability Description

The flaw in WindowManager permits the unauthorized commencement of protected activities, leading to an elevation of privilege risk.

Affected Systems and Versions

Product: Android
Versions: Android-12L

Exploitation Mechanism

The vulnerability can be exploited to initiate non-exported and protected activities in WindowManager, facilitating local privilege escalation.

Mitigation and Prevention

Discover how to mitigate and prevent the CVE-2021-39749 vulnerability.

Immediate Steps to Take

Regularly update Android devices to the latest security patches
Monitor official Android security bulletins for relevant updates

Long-Term Security Practices

Employ strong device security measures
Utilize security software to detect and prevent privilege escalation attempts

Patching and Updates

Keep Android-12L devices up to date with the latest security patches to address the vulnerability effectively.