CVE-2021-0535 : What You Need to Know

Android version 11 is impacted by a vulnerability that allows for local escalation of privileges. This vulnerability, identified as CVE-2021-0535, stems from a memory corruption issue, leading to potential misuse after being freed. Here's all you need to know about this CVE.

Understanding CVE-2021-0535

This section delves into the details of the vulnerability, its impact, affected systems, exploitation mechanism, and mitigation strategies.

What is CVE-2021-0535?

CVE-2021-0535 involves a memory corruption vulnerability in Android's wpas_ctrl_msg_queue_timeout of ctrl_iface_unix.c. The flaw allows for a use after free scenario, potentially enabling local privilege escalation without user interaction.

The Impact of CVE-2021-0535

The impact of this vulnerability is significant as it provides an avenue for attackers to elevate their privileges on systems running Android version 11, potentially leading to unauthorized access and control.

Technical Details of CVE-2021-0535

In this section, we'll explore the specific technical aspects of the CVE, including the vulnerability description, affected systems and versions, and the exploitation mechanism.

Vulnerability Description

The vulnerability arises from a memory corruption issue in wpas_ctrl_msg_queue_timeout of ctrl_iface_unix.c within Android OS. This flaw allows for a use after free scenario, which could be exploited for privilege escalation.

Affected Systems and Versions

Android version 11 is confirmed to be impacted by CVE-2021-0535. Users and organizations operating on this version are at risk of potential privilege escalation attacks.

Exploitation Mechanism

Exploitation of CVE-2021-0535 does not require user interaction, making it possible for attackers to execute local privilege escalation attacks without any specific user actions.

Mitigation and Prevention

This section outlines the steps that users and administrators can take to mitigate the risks posed by CVE-2021-0535 and prevent potential exploitation.

Immediate Steps to Take

Ensure that systems running Android 11 are updated with the latest security patches provided by the vendor. Consider implementing additional security measures and monitoring for any suspicious activities.

Long-Term Security Practices

Regularly update devices and systems with the latest security patches. Conduct security assessments and audits to identify and remediate vulnerabilities proactively.

Patching and Updates

Stay informed about security bulletins and updates released by the Android platform. Promptly apply relevant patches to mitigate the risks associated with CVE-2021-0535.