The Leagoo P1 Android device with a build fingerprint of sp7731c_1h10_32v4_bird:6.0/MRA58K/android.20170629.214736:user/release-keys contains the android framework (i.e., system_server) with a package name of android that has been modified by Leagoo or another entity in the supply chain. The system_server process in the core Android package has an exported broadcast receiver that allows any app co-located on the device to programmatically initiate the taking of a screenshot and have the resulting screenshot be written to external storage. The taking of a screenshot is not transparent to the user; the device has a screen animation as the screenshot is taken and there is a notification indicating that a screenshot occurred. If the attacking app also requests the EXPAND_STATUS_BAR permission, it can wake the device up using certain techniques and expand the status bar to take a screenshot of the user's notifications even if the device has an active screen lock. The notifications may contain sensitive data such as text messages used in two-factor authentication. The system_server process that provides this capability cannot be disabled, as it is part of the Android framework. The notification can be removed by a local Denial of Service (DoS) attack to reboot the device.
References
Link | Resource |
---|---|
https://www.kryptowire.com | Third Party Advisory |
https://www.kryptowire.com/portal/android-firmware-defcon-2018/ | Third Party Advisory |
https://www.kryptowire.com/portal/wp-content/uploads/2018/12/DEFCON-26-Johnson-and-Stavrou-Vulnerable-Out-of-the-Box-An-Eval-of-Android-Carrier-Devices-WP-Updated.pdf | Technical Description Third Party Advisory |
History
No history.
MITRE Information
Status: PUBLISHED
Assigner: mitre
Published: 2019-04-25T19:35:30
Updated: 2019-04-25T19:35:30
Reserved: 2018-08-05T00:00:00
Link: CVE-2018-14997
JSON object: View
NVD Information
Status : Analyzed
Published: 2019-04-25T20:29:01.287
Modified: 2019-10-03T00:03:26.223
Link: CVE-2018-14997
JSON object: View
Redhat Information
No data.