CVE-2022-21783 : Security Advisory and Response
Learn about CVE-2022-21783, a MediaTek WLAN driver vulnerability allowing local privilege escalation on certain Android devices. Find out the impact, affected systems, and mitigation steps.
A vulnerability has been discovered in the WLAN driver of certain MediaTek devices, potentially leading to a local escalation of privilege without the need for user interaction. Here's what you need to know about CVE-2022-21783.
Understanding CVE-2022-21783
This section will cover the details of the CVE-2022-21783 vulnerability, its impact, technical details, and mitigation strategies.
What is CVE-2022-21783?
CVE-2022-21783 is a vulnerability found in the WLAN driver of MediaTek devices. It is classified as an "Elevation of Privilege" vulnerability.
The Impact of CVE-2022-21783
The vulnerability could allow an attacker to execute code with elevated privileges on affected devices running Android 11.0 and 12.0, potentially leading to unauthorized access and control.
Technical Details of CVE-2022-21783
Let's delve into the technical aspects of the CVE-2022-21783 vulnerability.
Vulnerability Description
The vulnerability stems from a missing bounds check in the WLAN driver, potentially enabling an out-of-bounds write operation.
Affected Systems and Versions
Devices powered by MediaTek processors including MT6761, MT6779, MT6781, and more, running Android 11.0 and 12.0 are affected by this vulnerability.
Exploitation Mechanism
Exploiting CVE-2022-21783 does not require any user interaction, making it easier for threat actors to perform local privilege escalation attacks.
Mitigation and Prevention
Discover the steps you can take to mitigate the risks posed by CVE-2022-21783.
Immediate Steps to Take
Users are advised to apply patches provided by MediaTek promptly to address the vulnerability and prevent potential exploitation.
Long-Term Security Practices
Inculcating robust security practices such as regular software updates and staying informed about security bulletins can help safeguard against future vulnerabilities.
Patching and Updates
Regularly check for security patches and updates released by MediaTek for your devices to ensure they are protected against known vulnerabilities like CVE-2022-21783.