CVE-2021-0474 : Exploit Details and Defense Strategies

Android versions 8.1, 9, 10, and 11 are affected by a vulnerability in avrc_msg_cback of avrc_api.cc. This flaw could lead to remote code execution without requiring user interaction.

Understanding CVE-2021-0474

This CVE identifies a remote code execution vulnerability in Android versions 8.1, 9, 10, and 11, allowing potential attackers to execute arbitrary code remotely.

What is CVE-2021-0474?

The vulnerability lies in avrc_msg_cback of avrc_api.cc in Android. An attacker could exploit this flaw to trigger a heap buffer overflow, leading to remote code execution. Notably, this can be achieved without any additional execution privileges or user interaction.

The Impact of CVE-2021-0474

The impact of CVE-2021-0474 is severe as it enables threat actors to remotely execute malicious code on affected Android devices running versions 8.1, 9, 10, and 11. This can result in a complete compromise of the device's security and integrity.

Technical Details of CVE-2021-0474

This section provides detailed technical insights into the vulnerability.

Vulnerability Description

The vulnerability involves a potential out-of-bounds write due to a heap buffer overflow in avrc_msg_cback of avrc_api.cc in Android. Exploiting this issue could allow an attacker to achieve remote code execution.

Affected Systems and Versions

Android versions 8.1, 9, 10, and 11 are affected by this vulnerability present in avrc_msg_cback of avrc_api.cc.

Exploitation Mechanism

The exploitation of this vulnerability involves triggering a heap buffer overflow in avrc_msg_cback of avrc_api.cc, potentially leading to remote code execution.

Mitigation and Prevention

Protecting systems from CVE-2021-0474 requires immediate action and long-term security practices.

Immediate Steps to Take

Apply security patches provided by the Android security bulletin for May 2021.
Regularly update Android devices to the latest firmware to mitigate known vulnerabilities.

Long-Term Security Practices

Follow a robust security hygiene routine, including regular security updates and patch management.
Implement network security measures to prevent unauthorized access to vulnerable devices.

Patching and Updates

Regularly check and install security updates and patches released by Android to safeguard devices against known vulnerabilities.