CVE-2012-6335

Step 1: Preparation: The attacker obtains a GPS location spoofer application, readily available on the Google Play Store or through other means. These applications allow users to manually set GPS coordinates.

Step 2: Spoofing Activation: The attacker installs the GPS spoofer on a device (e.g., their own or one they have physical access to).

Step 3: Location Spoofing: The attacker uses the GPS spoofer to set the desired, arbitrary GPS coordinates. This could be a location far away from the actual device, or a location of interest.

Step 4: AVG Anti-Theft Interaction: The attacker triggers an action that causes the AVG Anti-Theft service to request the device's location (e.g., sending a remote command to locate the device).

Step 5: Data Reception and Trust: The AVG Anti-Theft service receives the spoofed GPS coordinates from the operating system, which is now providing the spoofed location data from the GPS spoofer application.

Step 6: Reporting False Location: The AVG Anti-Theft service reports the spoofed location to the user or the remote management console, providing inaccurate location information.

The vulnerability stems from insufficient validation of GPS data received by the AVG Anti-theft service. The service trusts location data provided without proper verification, allowing attackers to inject spoofed GPS coordinates. The root cause is a lack of input validation on the received location data. The service fails to check the origin or integrity of the GPS data, making it susceptible to manipulation. This flaw allows an attacker to bypass the intended security measures designed to track and protect the device.