CVE-2021-0977 : Vulnerability Insights and Analysis

This article provides detailed information about CVE-2021-0977, a security vulnerability impacting Android-12 that could potentially lead to local privilege escalation.

Understanding CVE-2021-0977

This section delves into what CVE-2021-0977 is and its impact on Android devices.

What is CVE-2021-0977?

CVE-2021-0977 is a vulnerability found in phNxpNHal_DtaUpdate of phNxpNciHal_dta.cc in Android-12. It is categorized as an elevation of privilege issue.

The Impact of CVE-2021-0977

The vulnerability could allow an attacker to perform an out-of-bounds write, potentially leading to local privilege escalation without requiring user interaction.

Technical Details of CVE-2021-0977

In this section, we explore the technical aspects of CVE-2021-0977, including the vulnerability description, affected systems and versions, and exploitation mechanism.

Vulnerability Description

The vulnerability arises due to an incorrect bounds check in phNxpNHal_DtaUpdate of phNxpNciHal_dta.cc, enabling an out-of-bounds write.

Affected Systems and Versions

The affected product is Android-12.

Exploitation Mechanism

Exploiting CVE-2021-0977 could result in local privilege escalation, requiring system execution privileges but no user interaction.

Mitigation and Prevention

This section outlines the steps to mitigate and prevent exploitation of CVE-2021-0977 on Android devices.

Immediate Steps to Take

Users should apply security patches promptly and be cautious while interacting with untrusted sources or apps.

Long-Term Security Practices

Regularly update the device's operating system and applications to protect against known vulnerabilities.

Patching and Updates

Keeping the Android system up to date with the latest security patches is crucial to avoid exploitation of CVE-2021-0977.