CVE-2021-0426 Explained : Impact and Mitigation

A detailed overview of CVE-2021-0426 highlighting the vulnerability, impact, technical details, and mitigation steps.

Understanding CVE-2021-0426

CVE-2021-0426 is a security vulnerability in Android-11 that allows for local escalation of privilege without requiring user interaction.

What is CVE-2021-0426?

CVE-2021-0426, found in parsePrimaryFieldFirstUidAnnotation of LogEvent.cpp, results in a heap buffer overflow, potentially leading to privilege escalation on Android-11.

The Impact of CVE-2021-0426

The vulnerability could enable attackers to escalate privileges locally without the need for additional execution privileges on affected Android-11 systems.

Technical Details of CVE-2021-0426

A deeper look into the vulnerability, affected systems, and exploitation mechanism.

Vulnerability Description

parsePrimaryFieldFirstUidAnnotation of LogEvent.cpp in Android-11 is susceptible to an out-of-bounds write due to a heap buffer overflow, allowing for potential privilege escalation.

Affected Systems and Versions

Product: Android-11

Exploitation Mechanism

The issue can be exploited for local privilege escalation without requiring user interaction.

Mitigation and Prevention

Guidance on immediate steps and long-term security practices to address CVE-2021-0426.

Immediate Steps to Take

Implement security updates and patches recommended by Android to mitigate the CVE-2021-0426 vulnerability.

Long-Term Security Practices

Regularly update your Android-11 devices with the latest security patches and follow secure coding practices to prevent similar vulnerabilities.

Patching and Updates

Stay informed about security bulletins and advisories from Android to apply timely patches and updates for enhanced security.