CVE-2021-0999 : Exploit Details and Defense Strategies
Discover the impact of CVE-2021-0999 on Android-12 devices, an elevation of privilege vulnerability allowing local attackers to manipulate Bluetooth connections without requiring user interaction.
AndroidManifest.xml in Android-12 has a vulnerability that could allow a local attacker to escalate privileges without additional permissions, impacting the A2DP Bluetooth device connection state.
Understanding CVE-2021-0999
This CVE refers to an elevation of privilege vulnerability in Android-12 that arises from a missing permission check in the broadcast definition of AndroidManifest.xml.
What is CVE-2021-0999?
The CVE-2021-0999 vulnerability in Android-12 allows a local attacker to exploit the A2DP Bluetooth device connection state without requiring user interaction, potentially leading to an escalation of privileges.
The Impact of CVE-2021-0999
Exploitation of this vulnerability could result in a local escalation of privilege without the need for additional execution privileges, posing a security risk to Android-12 devices.
Technical Details of CVE-2021-0999
This section provides details on the vulnerability, affected systems, and how the exploitation can occur.
Vulnerability Description
The vulnerability in Android-12 enables a local attacker to manipulate the A2DP Bluetooth device connection state by bypassing necessary permission checks in the broadcast definition of AndroidManifest.xml.
Affected Systems and Versions
The impacted system is Android-12, specifically in the broadcast definition of AndroidManifest.xml.
Exploitation Mechanism
The missing permission check in AndroidManifest.xml allows attackers to set the A2DP Bluetooth device connection state, leading to potential local privilege escalation.
Mitigation and Prevention
To safeguard your device from CVE-2021-0999, follow the mitigation strategies listed below.
Immediate Steps to Take
- Apply security patches promptly to address the vulnerability in Android-12.
Long-Term Security Practices
- Regularly update your system to stay protected against known vulnerabilities.
- Implement security best practices to reduce the risk of privilege escalation attacks.
Patching and Updates
- Stay informed about security bulletins and updates provided by Android to address CVE-2021-0999 and other potential vulnerabilities.