CVE-2022-21757 : Vulnerability Insights and Analysis
Discover the details of CVE-2022-21757, a critical vulnerability in MediaTek WIFI Firmware allowing remote denial of service attacks without user interaction. Learn about impacts and mitigation.
A vulnerability has been identified in WIFI Firmware of certain MediaTek devices that could potentially result in a system crash leading to remote denial of service attacks. This vulnerability, tracked under CVE-2022-21757, requires no additional execution privileges and can be exploited without user interaction.
Understanding CVE-2022-21757
This section provides an overview of the critical details regarding the CVE-2022-21757 vulnerability.
What is CVE-2022-21757?
The CVE-2022-21757 vulnerability exists in the WIFI Firmware of MediaTek devices, allowing malicious actors to cause a system crash and execute remote denial of service attacks.
The Impact of CVE-2022-21757
The impact of this vulnerability is significant as it can lead to system downtime and disruption due to remote denial of service attacks. Attackers can exploit this issue without requiring any user interaction.
Technical Details of CVE-2022-21757
In this section, we delve deeper into the technical aspects of the CVE-2022-21757 vulnerability.
Vulnerability Description
The vulnerability arises from a missing count check in the WIFI Firmware, which can be exploited by threat actors to trigger system crashes.
Affected Systems and Versions
The affected products include a range of MediaTek devices running Android 11.0 and 12.0 versions. Devices from MT6833 to MT8797 fall under this category.
Exploitation Mechanism
Exploiting CVE-2022-21757 requires no user interaction and does not mandate additional execution privileges. Attackers can leverage this vulnerability to launch remote denial of service attacks.
Mitigation and Prevention
This section outlines the necessary steps to mitigate and prevent exploitation of CVE-2022-21757.
Immediate Steps to Take
Users are advised to apply the provided patch with Patch ID ALPS06468894 to address the vulnerability promptly. It is crucial to update affected MediaTek devices to safeguard against potential attacks.
Long-Term Security Practices
Employing robust security practices, such as regularly updating firmware and monitoring security bulletins, can enhance the overall security posture against emerging vulnerabilities.
Patching and Updates
Regularly check for security patches and updates released by MediaTek to ensure that devices are protected against known vulnerabilities.