CVE-2021-1022 : Vulnerability Insights and Analysis
Learn about CVE-2021-1022 affecting Android-12, a vulnerability in Bluetooth functionality that could lead to a denial of service attack without user interaction.
A vulnerability in btif_in_hf_client_generic_evt of btif_hf_client.cc in Android affecting Android-12 could allow for a Bluetooth service crash, potentially leading to remote denial of service without requiring user interaction.
Understanding CVE-2021-1022
This CVE involves a missing null check in a specific function of the Android code that could result in a service crash and denial of service attack.
What is CVE-2021-1022?
The vulnerability lies in the Bluetooth functionality of Android, specifically in the handling of certain events, which may be exploited remotely to crash the Bluetooth service without user involvement.
The Impact of CVE-2021-1022
Exploitation of this vulnerability could result in a denial of service condition on the affected Android devices running Android-12, potentially disrupting Bluetooth functionality.
Technical Details of CVE-2021-1022
This section provides more detailed information on the specific aspects of the CVE.
Vulnerability Description
The vulnerability arises from a missing null check in the handling of Bluetooth events, leading to a potential crash of the service and subsequent denial of service.
Affected Systems and Versions
The issue impacts devices running Android-12, specifically version Android-12, exposing them to the risk of a Bluetooth service crash.
Exploitation Mechanism
Attackers could exploit this vulnerability remotely without requiring any user interaction, triggering a denial of service condition by crashing the Bluetooth service.
Mitigation and Prevention
To address CVE-2021-1022 and enhance the security of affected systems, certain steps and practices are recommended.
Immediate Steps to Take
Users are advised to stay informed about security updates from Android and apply patches promptly to mitigate the risk of exploitation.
Long-Term Security Practices
Implementing robust security measures, keeping software up to date, and following best practices for device security can help prevent similar vulnerabilities.
Patching and Updates
Regularly check for security bulletins and updates from Android to ensure that the latest patches are applied to protect against known vulnerabilities.