CVE-2021-0421 Explained : Impact and Mitigation
Learn about CVE-2021-0421 affecting MediaTek Android devices. Understand the impact, affected versions, and mitigation steps for this information disclosure vulnerability.
This CVE-2021-0421 relates to a vulnerability found in multiple MediaTek Android devices. The flaw exists in the memory management driver, allowing for potential information disclosure without the need for user interaction.
Understanding CVE-2021-0421
This section will cover the impact, technical details, and mitigation strategies related to the CVE-2021-0421 vulnerability.
What is CVE-2021-0421?
The vulnerability stems from a missing bounds check in the memory management driver, potentially leading to local information disclosure. Exploitation does not require extra execution privileges and user interaction.
The Impact of CVE-2021-0421
The vulnerability could result in local information disclosure on affected MediaTek devices running Android 10.0 and 11.0 versions. Attackers could exploit this issue without any additional permissions.
Technical Details of CVE-2021-0421
Let's delve into the specifics of the vulnerability.
Vulnerability Description
The flaw in the memory management driver allows for potential information disclosure due to the absence of a bounds check, enabling attackers to access sensitive data.
Affected Systems and Versions
Devices powered by MediaTek processors including MT6580, MT6753, MT6757, and more, running Android 10.0 and 11.0 are impacted by this vulnerability.
Exploitation Mechanism
The vulnerability can be exploited locally without the need for user interaction, posing a significant risk to the confidentiality of stored information.
Mitigation and Prevention
In this section, we will outline steps to mitigate the risks associated with CVE-2021-0421.
Immediate Steps to Take
Users are advised to apply relevant security patches provided by MediaTek to address the vulnerability. Stay informed about security bulletins and updates from your device manufacturer.
Long-Term Security Practices
Regularly update your device's software to the latest versions. Implement strong security measures, such as using reputable apps and avoiding suspicious links or downloads.
Patching and Updates
MediaTek has released patches to fix the vulnerability. Ensure your device is up to date with the latest security updates to protect against potential exploitation.