CVE-2019-15351 Explained : Impact and Mitigation

A vulnerability in the Tecno Camon Android device allows arbitrary commands to be executed as the system user, compromising user privacy and security.

Understanding CVE-2019-15351

The vulnerability lies in a pre-installed platform app on the Tecno Camon device, enabling unauthorized access and control by malicious apps.

What is CVE-2019-15351?

The Tecno Camon Android device is susceptible to a security flaw that permits third-party apps to execute commands as the system user, leading to potential privacy breaches and unauthorized actions.

The Impact of CVE-2019-15351

The vulnerability allows malicious apps to perform various actions, including video recording the user's screen, factory resetting the device, accessing notifications and text messages, and injecting events in the GUI.

Technical Details of CVE-2019-15351

The vulnerability is due to an exported service within a pre-installed app on the device, enabling the execution of arbitrary commands.

Vulnerability Description

The app com.lovelyfont.defcontainer contains an exported service, FontCoverService, that permits the execution of commands triggered by specific log messages, compromising user privacy.

Affected Systems and Versions

Tecno Camon Android device with build fingerprint TECNO/H622/TECNO-ID5b:8.1.0/O11019/G-180829V31:user/release-keys
App version: com.lovelyfont.defcontainer (versionCode=7, versionName=7.0.11)

Exploitation Mechanism

Malicious apps can exploit the service to execute commands as the system user, enabling unauthorized actions and data access.

Mitigation and Prevention

Immediate Steps to Take:

Avoid installing apps from untrusted sources
Regularly monitor device activity for suspicious behavior
Consider using security apps to detect and prevent unauthorized actions Long-Term Security Practices:
Keep devices updated with the latest security patches
Review and restrict app permissions to minimize potential risks
Implement strong device encryption to protect sensitive data
Patching and Updates:
Check for and apply security updates provided by the device manufacturer
Stay informed about security best practices and potential threats