Discover the impact of CVE-2022-21767 affecting MediaTek devices with specific Android versions. Learn about the vulnerability, affected systems, exploitation mechanism, and mitigation strategies.
Bluetooth vulnerability in MediaTek devices could allow local attackers to escalate privileges without user interaction.
Understanding CVE-2022-21767
This CVE affects multiple MediaTek devices running specific Android versions due to a Bluetooth out of bounds write vulnerability.
What is CVE-2022-21767?
The vulnerability in Bluetooth on certain MediaTek devices can be exploited by local attackers to escalate privileges without requiring user interaction.
The Impact of CVE-2022-21767
The missing bounds check in Bluetooth could lead to a local escalation of privilege, potentially granting unauthorized access to sensitive data and functions on the affected devices.
Technical Details of CVE-2022-21767
This section provides more insight into the vulnerability, affected systems, and the exploitation mechanism.
Vulnerability Description
The vulnerability arises from a missing bounds check in the Bluetooth implementation on MediaTek devices, allowing attackers to perform an out of bounds write.
Affected Systems and Versions
Devices such as MT8167, MT8175, MT8183, MT8362A, MT8365, and MT8385 running Android versions 8.1, 9.0, 10.0, 11.0, and 12.0 are impacted.
Exploitation Mechanism
Attackers can exploit this vulnerability without any user interaction, potentially escalating their privileges on the affected devices.
Mitigation and Prevention
To safeguard against CVE-2022-21767, users and organizations can take immediate steps and adopt long-term security practices while ensuring timely patching and updates.
Immediate Steps to Take
Users should be cautious of Bluetooth activities on vulnerable MediaTek devices and consider disabling Bluetooth when not in use to mitigate potential risks.
Long-Term Security Practices
Implementing strict device access controls, regular security assessments, and monitoring Bluetooth activity can enhance overall security posture against similar vulnerabilities.
Patching and Updates
MediaTek has released a patch for CVE-2022-21767. Users are advised to apply relevant updates provided by the vendor to address this security issue.