CVE-2021-0930 : What You Need to Know
Learn about CVE-2021-0930, a critical vulnerability in Android NFC handling leading to remote code execution. Understand the impact, affected versions, and mitigation steps.
Android is affected by a vulnerability where a missing bounds check in phNxpNciHal_process_ext_rsp of phNxpNciHal_ext.cc could result in remote code execution over NFC. This issue affects Android versions 9, 10, 11, and 12.
Understanding CVE-2021-0930
This CVE record highlights a critical vulnerability in the handling of NFC communications on Android devices.
What is CVE-2021-0930?
The vulnerability in phNxpNciHal_process_ext_rsp of phNxpNciHal_ext.cc allows an attacker to execute code remotely over NFC without requiring additional privileges or user interaction.
The Impact of CVE-2021-0930
Exploitation of this vulnerability could lead to remote code execution, giving attackers unauthorized access to affected Android devices.
Technical Details of CVE-2021-0930
This section delves into the specifics of the vulnerability, the affected systems, and how it can be exploited.
Vulnerability Description
The vulnerability is caused by a missing bounds check in the mentioned component, enabling an out-of-bounds write that can be leveraged for remote code execution.
Affected Systems and Versions
Android versions 9, 10, 11, and 12 are impacted by this vulnerability, potentially exposing a wide range of devices to exploitation.
Exploitation Mechanism
Attackers can exploit this issue remotely over NFC, gaining control over the target device without requiring any user interaction.
Mitigation and Prevention
This section outlines steps to mitigate the risks posed by CVE-2021-0930 and prevent potential exploitation.
Immediate Steps to Take
Users are advised to apply security patches from the device manufacturer promptly to address this vulnerability and protect their devices.
Long-Term Security Practices
Implementing strong security practices, such as avoiding unknown NFC sources and keeping devices up to date, can reduce the risk of exploitation.
Patching and Updates
Regularly checking for and applying security updates provided by Android or device manufacturers is crucial to safeguarding against known vulnerabilities.