CVE-2021-38789 : Exploit Details and Defense Strategies

Allwinner R818 SoC Android Q SDK V1.0 is affected by an incorrect access control vulnerability that allows a third-party app to modify system settings.

Understanding CVE-2021-38789

The vulnerability in Allwinner R818 SoC Android Q SDK V1.0 exposes devices to unauthorized changes to system settings by third-party applications.

What is CVE-2021-38789?

The CVE-2021-38789 vulnerability is an incorrect access control issue in the Allwinner R818 SoC Android Q SDK V1.0 that enables unauthorized third-party applications to alter system settings without proper permission checks.

The Impact of CVE-2021-38789

This vulnerability could be exploited by malicious apps to make unauthorized changes to system settings, potentially compromising device security and user data.

Technical Details of CVE-2021-38789

All the technical aspects related to CVE-2021-38789 and how it can impact systems.

Vulnerability Description

The vulnerability lies in the Allwinner R818 SoC Android Q SDK V1.0, allowing third-party apps to adjust system configurations without the necessary permission verification.

Affected Systems and Versions

Affected Product: Not applicable
Affected Vendor: Not applicable
Affected Version: Not applicable

Exploitation Mechanism

The vulnerability can be exploited by a third-party app on devices using the Allwinner R818 SoC Android Q SDK V1.0 to manipulate system settings without proper permission validation.

Mitigation and Prevention

Measures to mitigate and prevent exploitation of CVE-2021-38789

Immediate Steps to Take

Update the affected devices with security patches from the vendor.
Avoid installing apps from untrusted sources.
Regularly monitor and review app permissions on devices.

Long-Term Security Practices

Implement robust app permission controls in the device settings.
Conduct regular security audits and penetration testing of the device software.
Educate users about the risks of granting excessive permissions to apps.

Patching and Updates

It is crucial to apply security patches provided by Allwinner to address the vulnerability in the Allwinner R818 SoC Android Q SDK V1.0.