CVE-2021-0475 : What You Need to Know

Android devices are susceptible to a critical vulnerability, CVE-2021-0475, that could allow remote code execution over Bluetooth without requiring user interaction. The flaw stems from a use after free issue in on_l2cap_data_ind of btif_sock_l2cap.cc. Here's what you need to know about this CVE.

Understanding CVE-2021-0475

This section delves into the key details of CVE-2021-0475.

What is CVE-2021-0475?

The vulnerability in on_l2cap_data_ind of btif_sock_l2cap.cc could result in memory corruption, enabling a potential attacker to execute arbitrary code remotely over Bluetooth without needing additional privileges or user interaction.

The Impact of CVE-2021-0475

The impact of this vulnerability is severe as it allows threat actors to exploit Bluetooth connectivity to execute malicious code on vulnerable Android devices.

Technical Details of CVE-2021-0475

Here, we explore the technical aspects of CVE-2021-0475.

Vulnerability Description

The vulnerability is categorized as a remote code execution flaw, highlighting the severity of the issue.

Affected Systems and Versions

Android versions 11 and 10 are affected by this vulnerability.

Exploitation Mechanism

The vulnerability arises from a use after free issue in the specified code location, potentially leading to remote code execution over Bluetooth.

Mitigation and Prevention

In this section, we discuss strategies to mitigate and prevent exploitation of CVE-2021-0475.

Immediate Steps to Take

Users should apply security patches promptly to safeguard their devices against potential attacks leveraging this vulnerability.

Long-Term Security Practices

Implementing robust security measures, such as keeping devices updated and exercising caution while using Bluetooth, can enhance overall security posture.

Patching and Updates

Regularly check for security updates from Android to patch vulnerabilities like CVE-2021-0475 and ensure the ongoing protection of your device.