CVE-2021-0430 : What You Need to Know

A detailed overview of the CVE-2021-0430 vulnerability affecting Android versions 10 and 11 with the potential for remote code execution through an NFC-related exploit.

Understanding CVE-2021-0430

This section delves into the critical details of the CVE-2021-0430 vulnerability.

What is CVE-2021-0430?

CVE-2021-0430 is a security vulnerability found in Android versions 10 and 11 that allows for potential remote code execution through a specific NFC-related exploit. The vulnerability stems from a missing bounds check in rw_mfc_handle_read_op of rw_mfc.cc.

The Impact of CVE-2021-0430

The impact of CVE-2021-0430 is severe as it could be exploited remotely via a malicious NFC packet, leading to unauthorized remote code execution with no additional execution privileges required. Notably, user interaction is not necessary for the successful exploitation of this vulnerability.

Technical Details of CVE-2021-0430

Exploring the technical aspects of the CVE-2021-0430 vulnerability.

Vulnerability Description

The vulnerability arises in rw_mfc_handle_read_op of rw_mfc.cc due to a missing bounds check, opening the door to an out-of-bounds write situation that could be leveraged for remote code execution.

Affected Systems and Versions

The affected systems are Android versions 10 and 11, posing a risk to users operating these versions.

Exploitation Mechanism

The exploitation of CVE-2021-0430 occurs through a crafted and malicious NFC packet, enabling threat actors to execute remote code without the need for user interaction.

Mitigation and Prevention

This section covers preventive measures and solutions to mitigate the risks posed by CVE-2021-0430.

Immediate Steps to Take

Users are advised to apply security patches released by Google promptly to address the vulnerability. Additionally, exercise caution when handling NFC interactions to reduce exposure to potential exploits.

Long-Term Security Practices

Incorporating robust security practices, such as keeping devices updated, avoiding untrusted NFC connections, and utilizing security tools, can bolster long-term defenses against such vulnerabilities.

Patching and Updates

Regularly updating Android devices to the latest security patches provided by the vendor is crucial in maintaining a secure environment and safeguarding against known vulnerabilities.