CVE-2021-0445 : What You Need to Know

A detailed analysis of CVE-2021-0445, highlighting the vulnerability, impact, technical details, and mitigation steps.

Understanding CVE-2021-0445

CVE-2021-0445 is a security vulnerability identified in Android operating systems that could lead to local escalation of privilege without the need for additional execution privileges.

What is CVE-2021-0445?

The vulnerability exists in the WelcomeActivity.java file of Android, potentially resulting in a confused deputy attack that could be exploited for privilege escalation.

The Impact of CVE-2021-0445

The impact of this CVE is the local elevation of privilege, allowing an attacker to gain higher privileges without user interaction, posing a significant security risk.

Technical Details of CVE-2021-0445

This section provides detailed technical information about the vulnerability.

Vulnerability Description

The presence of a residual profile at the beginning of WelcomeActivity.java leads to a confused deputy scenario, enabling an attacker to escalate privileges locally.

Affected Systems and Versions

The affected products include Android versions 11 and 9, potentially leaving devices running these versions at risk of exploitation.

Exploitation Mechanism

The vulnerability can be exploited locally without the need for additional execution privileges, making it a critical security concern.

Mitigation and Prevention

Learn how to mitigate the risks associated with CVE-2021-0445 and prevent potential exploitation.

Immediate Steps to Take

Immediate action such as applying security patches and updates is crucial to protect systems from exploitation.

Long-Term Security Practices

Implementing robust security practices, such as least privilege access and regular security assessments, can enhance overall system security.

Patching and Updates

Regularly updating Android devices to the latest software versions that address CVE-2021-0445 is essential for maintaining a secure environment.