CVE-2022-21790 : What You Need to Know

This article provides an overview of CVE-2022-21790, a security vulnerability in camera isp of certain MediaTek devices that could lead to local information disclosure.

Understanding CVE-2022-21790

CVE-2022-21790 is a vulnerability found in the camera isp of specific MediaTek devices, potentially resulting in local information disclosure without the need for user interaction.

What is CVE-2022-21790?

The vulnerability in camera isp allows for an out-of-bounds read due to a missing bounds check. This flaw could be exploited to disclose local information with required System execution privileges.

The Impact of CVE-2022-21790

If exploited, CVE-2022-21790 could lead to local information disclosure on affected devices running Android 11.0 and 12.0. This could pose a risk to user data privacy and security.

Technical Details of CVE-2022-21790

This section delves into the technical aspects of the vulnerability, including its description, affected systems and versions, as well as the exploitation mechanism.

Vulnerability Description

The vulnerability arises in the camera image signal processor (isp) component of MediaTek devices, allowing for an out-of-bounds read operation due to the absence of proper bounds checking.

Affected Systems and Versions

Devices powered by MediaTek processors MT6833, MT6853, MT6873, MT6877, and MT6893 with Android versions 11.0 and 12.0 are susceptible to CVE-2022-21790.

Exploitation Mechanism

Exploiting this vulnerability does not require user interaction, making it more dangerous. Attackers can potentially disclose local information by executing malicious code on the affected devices.

Mitigation and Prevention

In light of the CVE-2022-21790 security risk, immediate action and long-term security practices are recommended to mitigate the threat.

Immediate Steps to Take

Users of affected devices should exercise caution while accessing sensitive information and consider implementing additional security measures to safeguard their data.

Long-Term Security Practices

Regularly updating device firmware, installing security patches provided by the vendor, and being cautious with downloaded content can help prevent exploitation of vulnerabilities like CVE-2022-21790.

Patching and Updates

Device manufacturers, such as MediaTek, may release patches and updates to address CVE-2022-21790. Users are advised to apply these patches promptly to ensure the security of their devices.