CVE-2021-0467 : Vulnerability Insights and Analysis

A vulnerability has been identified in Chromecast bootROM that could allow for local escalation of privilege in the bootloader of Android devices. This CVE, assigned the ID CVE-2021-0467, poses a risk of an out of bounds write due to an incorrect bounds check, potentially leading to privilege escalation without user interaction.

Understanding CVE-2021-0467

This section delves into the details surrounding CVE-2021-0467.

What is CVE-2021-0467?

CVE-2021-0467 is a vulnerability found in the Chromecast bootROM, allowing for a possible out of bounds write. This flaw can be exploited to achieve local escalation of privilege in Android devices, specifically affecting Android SoC versions.

The Impact of CVE-2021-0467

The impact of this vulnerability is the potential for attackers to escalate their privileges locally within the bootloader of Android devices. With physical USB access, threat actors could exploit this issue without requiring additional execution privileges.

Technical Details of CVE-2021-0467

This section provides a deeper insight into the technical aspects of CVE-2021-0467.

Vulnerability Description

The vulnerability stems from an incorrect bounds check in the Chromecast bootROM, enabling an out of bounds write. This could be leveraged for local privilege escalation.

Affected Systems and Versions

Android devices utilizing Android SoC versions are affected by CVE-2021-0467, making them susceptible to the privilege escalation issue in the bootloader.

Exploitation Mechanism

Exploiting this vulnerability requires physical USB access to the device. Attackers can trigger the out of bounds write without the need for user interaction.

Mitigation and Prevention

In this section, proactive measures to mitigate and prevent the exploitation of CVE-2021-0467 are discussed.

Immediate Steps to Take

Users and administrators should apply security patches and updates provided by Android to address CVE-2021-0467 promptly. Implementing proper access controls and monitoring for unauthorized USB connections can also enhance security.

Long-Term Security Practices

Maintaining an updated software environment, conducting regular security assessments, and following secure coding practices can help prevent similar vulnerabilities in the future.

Patching and Updates

Regularly check for security bulletins and updates from Android to stay informed about patches released to address CVE-2021-0467 and other security issues.