CVE-2021-0326 Explained : Impact and Mitigation

Android versions 8.1, 9, 10, and 11 are impacted by CVE-2021-0326, a vulnerability that exists in the p2p_copy_client_info function of p2p.c. The flaw allows an out-of-bounds write, potentially leading to remote code execution without the need for user interaction.

Understanding CVE-2021-0326

This section provides insights into the vulnerability, its impact, technical details, and mitigation strategies.

What is CVE-2021-0326?

CVE-2021-0326 involves a missing bounds check in the p2p_copy_client_info function of p2p.c in Android versions 8.1, 9, 10, and 11. Exploiting this vulnerability could result in the execution of arbitrary code remotely.

The Impact of CVE-2021-0326

The impact of this vulnerability is severe as it could allow threat actors to execute malicious code on devices running affected Android versions through a Wi-Fi Direct search, with no additional privileges required.

Technical Details of CVE-2021-0326

Let's delve deeper into the specifics of this security flaw to understand how it affects Android devices.

Vulnerability Description

The vulnerability stems from a missing bounds check in the p2p_copy_client_info function of p2p.c, enabling threat actors to exploit it for remote code execution.

Affected Systems and Versions

Android versions 8.1, 9, 10, and 11 are confirmed to be impacted by CVE-2021-0326 due to the identified flaw in the p2p.c module.

Exploitation Mechanism

Threat actors can exploit this vulnerability by initiating a Wi-Fi Direct search on the target device, triggering the out-of-bounds write and potentially executing malicious code without user interaction.

Mitigation and Prevention

It is crucial to take immediate steps to mitigate the risks posed by CVE-2021-0326 and implement long-term security practices to safeguard Android devices.

Immediate Steps to Take

Users must apply security updates provided by Google for affected Android versions to patch the vulnerability and prevent potential exploitation.

Long-Term Security Practices

Maintaining up-to-date software, exercising caution while connecting to public Wi-Fi, and being vigilant against suspicious network activities can help enhance overall device security.

Patching and Updates

Regularly check for security bulletins and updates from Google to ensure that Android devices are protected against known vulnerabilities, including CVE-2021-0326.