CVE-2021-39780 : What You Need to Know

Android 12L Traceur vulnerability allows local privilege escalation through a missing permission check.

Understanding CVE-2021-39780

A security vulnerability in Traceur could lead to an elevation of privilege on Android devices.

What is CVE-2021-39780?

The vulnerability in Traceur allows bypassing developer settings requirements for capturing system traces on Android devices.
An attacker can exploit this issue to escalate privileges locally without needing additional execution privileges.

The Impact of CVE-2021-39780

Successful exploitation of this vulnerability could result in an attacker gaining elevated privileges on the affected Android device.

Technical Details of CVE-2021-39780

A closer look at the technical aspects of the CVE-2021-39780 vulnerability.

Vulnerability Description

The vulnerability arises from a missing permission check in Traceur, enabling unauthorized capturing of system traces.

Affected Systems and Versions

Product: Android
Version: Android-12L

Exploitation Mechanism

The exploit requires user interaction to capture system traces, leading to local privilege escalation.

Mitigation and Prevention

Ways to mitigate the CVE-2021-39780 vulnerability and prevent security risks.

Immediate Steps to Take

Update affected Android devices to the latest version that includes a patch for CVE-2021-39780.
Regularly monitor security bulletins and updates from Google for relevant patches.

Long-Term Security Practices

Implement least privilege access controls to limit user and application privileges.
Conduct regular security assessments and penetration testing to identify and address vulnerabilities proactively.

Patching and Updates

Apply security patches provided by Google promptly to address CVE-2021-39780 and other known vulnerabilities.