CVE-2021-39750 : What You Need to Know

This article provides details about CVE-2021-39750, which affects Android-12L and allows for the escalation of privileges through a missing permission check.

Understanding CVE-2021-39750

This section will explain the vulnerability's nature and impact.

What is CVE-2021-39750?

CVE-2021-39750 is a vulnerability in PackageManager on Android-12L that allows changing the splash screen theme of other apps without proper permission checks, potentially leading to local privilege escalation.

The Impact of CVE-2021-39750

The vulnerability could be exploited for local escalation of privilege without requiring additional execution privileges, and user interaction is unnecessary for exploitation.

Technical Details of CVE-2021-39750

In this section, we will delve into technical specifics of the CVE.

Vulnerability Description

The flaw in PackageManager on Android-12L enables unauthorized splash screen theme modifications in other apps, resulting in privilege escalation.

Affected Systems and Versions

Product: Android
Versions Affected: Android-12L

Exploitation Mechanism

The vulnerability exploits a missing permission check in PackageManager, allowing unauthorized theme alterations leading to privilege escalation.

Mitigation and Prevention

Here, we will discuss steps to mitigate and prevent the exploitation of CVE-2021-39750.

Immediate Steps to Take

Apply security patches from the vendor.
Monitor for any unusual app behavior.
Regularly update Android devices.

Long-Term Security Practices

Implement least privilege access controls.
Conduct security assessments regularly.
Educate users on security best practices.

Patching and Updates

Keep Android-12L updated with the latest security patches.
Stay informed about security bulletins related to Android-12L.