CVE-2021-0991 Explained : Impact and Mitigation

A vulnerability has been identified in Android-12 that could potentially lead to an information disclosure risk due to Bluetooth MAC addresses leak. This CVE, indexed as CVE-2021-0991, carries significant implications that demand attention and mitigation.

Understanding CVE-2021-0991

This section delves into the nature of the CVE-2021-0991 vulnerability and its potential impact on systems and devices.

What is CVE-2021-0991?

CVE-2021-0991 is a vulnerability present in Android-12 that could result in the inadvertent exposure of Bluetooth MAC addresses through the OnMetadataChangedListener of AdvancedBluetoothDetailsHeaderController.java. Such a disclosure poses a risk of local information exposure, with exploits requiring System execution privileges.

The Impact of CVE-2021-0991

The impact of this vulnerability lies in the unauthorized revelation of Bluetooth MAC addresses, which can allow malicious actors to access sensitive information without the need for user interaction.

Technical Details of CVE-2021-0991

Gain insights into the specific technical details surrounding CVE-2021-0991, including the vulnerability description, affected systems and versions, as well as the exploitation mechanism.

Vulnerability Description

The vulnerability stems from a potential leak of Bluetooth MAC addresses due to log information disclosure within OnMetadataChangedListener of AdvancedBluetoothDetailsHeaderController.java in Android-12.

Affected Systems and Versions

Android-12 is the primary version impacted by CVE-2021-0991, with this vulnerability affecting systems operating on this particular Android version.

Exploitation Mechanism

Exploiting CVE-2021-0991 could lead to local information disclosure, necessitating System execution privileges without the requirement of user interaction.

Mitigation and Prevention

Discover the crucial steps necessary to mitigate and prevent the exploitation of the CVE-2021-0991 vulnerability in Android-12.

Immediate Steps to Take

Immediate actions include implementing security patches, monitoring system activity, and restricting unauthorized access to mitigate potential risks associated with this vulnerability.

Long-Term Security Practices

Incorporating robust security practices, such as regular software updates, network monitoring, and user awareness programs, can enhance overall security posture and reduce the likelihood of exploitation.

Patching and Updates

Patching Android-12 systems with the latest security updates provided by the vendor is essential to address the CVE-2021-0991 vulnerability and reinforce system defenses.