CVE-2021-39632 : Vulnerability Insights and Analysis

This CVE-2021-39632 article provides details about a vulnerability in Android affecting versions Android-11 and Android-12, potentially leading to local privilege escalation without requiring additional execution privileges.

Understanding CVE-2021-39632

CVE-2021-39632 refers to an out-of-bounds write vulnerability in Android that could allow an attacker to escalate privileges locally.

What is CVE-2021-39632?

This CVE involves an incorrect bounds check in the inotify_cb of events.cpp, which could be exploited for local privilege escalation without the need for user interaction.

The Impact of CVE-2021-39632

The vulnerability could allow an attacker to gain escalated privileges on the affected Android devices, posing a risk of unauthorized access.

Technical Details of CVE-2021-39632

This section provides specific technical details about the CVE.

Vulnerability Description

The vulnerability exists in inotify_cb of events.cpp in Android, leading to an out-of-bounds write due to an incorrect bounds check.

Affected Systems and Versions

Product: Android
Versions: Android-11, Android-12

Exploitation Mechanism

The vulnerability could be exploited to achieve local privilege escalation on Android devices without the need for additional execution privileges.

Mitigation and Prevention

In this section, find measures to mitigate and prevent exploitation of CVE-2021-39632.

Immediate Steps to Take

Apply security patches provided by the Android security bulletin.
Monitor for any unusual system behavior that could indicate exploitation.

Long-Term Security Practices

Regularly update Android devices to the latest OS versions to mitigate known vulnerabilities.
Implement security best practices to minimize the risk of privilege escalation attacks.

Patching and Updates

Ensure timely installation of security updates and patches released by Android to address the vulnerability.