Current Description
The Tecno Camon Android device with a build fingerprint of TECNO/H622/TECNO-ID5b:8.1.0/O11019/G-180829V31:user/release-keys contains a pre-installed platform app with a package name of com.lovelyfont.defcontainer (versionCode=7, versionName=7.0.11). This app contains an exported service named com.lovelyfont.manager.FontCoverService that allows any app co-located on the device to supply arbitrary commands via shell script to be executed as the system user that are triggered by writing an attacker-selected message to the logcat log. This app cannot be disabled by the user and the attack can be performed by a zero-permission app. Executing commands as the system user can allow a third-party app to video record the user’s screen, factory reset the device, obtain the user’s notifications, read the logcat logs, inject events in the Graphical User Interface (GUI), and obtains the user’s text messages, and more. Executing commands as the system user can allow a third-party app to factory reset the device, obtain the user’s notifications, read the logcat logs, inject events in the GUI, change the default Input Method Editor (IME) (e.g., keyboard) with one contained within the attacking app that contains keylogging functionality, and obtains the user’s text messages, and more.
Source: MITRE
View Analysis Description
Analysis Description
The Tecno Camon Android device with a build fingerprint of TECNO/H622/TECNO-ID5b:8.1.0/O11019/G-180829V31:user/release-keys contains a pre-installed platform app with a package name of com.lovelyfont.defcontainer (versionCode=7, versionName=7.0.11). This app contains an exported service named com.lovelyfont.manager.FontCoverService that allows any app co-located on the device to supply arbitrary commands via shell script to be executed as the system user that are triggered by writing an attacker-selected message to the logcat log. This app cannot be disabled by the user and the attack can be performed by a zero-permission app. Executing commands as the system user can allow a third-party app to video record the user’s screen, factory reset the device, obtain the user’s notifications, read the logcat logs, inject events in the Graphical User Interface (GUI), and obtains the user’s text messages, and more. Executing commands as the system user can allow a third-party app to factory reset the device, obtain the user’s notifications, read the logcat logs, inject events in the GUI, change the default Input Method Editor (IME) (e.g., keyboard) with one contained within the attacking app that contains keylogging functionality, and obtains the user’s text messages, and more.
Source: MITRE
Severity
References to Advisories, Solutions, and Tools
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Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-732 | Incorrect Permission Assignment for Critical Resource | NIST |
Known Affected Software Configurations Switch to CPE 2.2
Configuration 1 ( hide )
| cpe:2.3:o:tecno-mobile:tecno/h622/tecno-id5b:8.1.0/o11019/g-180829v31:user/release-keys_firmware:-:*:*:*:*:*:*:* Show Matching CPE(s) |
||
| cpe:2.3:h:tecno-mobile:tecno/h622/tecno-id5b:8.1.0/o11019/g-180829v31:user/release-keys:-:*:*:*:*:*:*:* Show Matching CPE(s) |
Change History
1 change record found – show changes
Initial Analysis – 12/2/2019 2:49:54 PM
| Action | Type | Old Value | New Value |
|---|---|---|---|
| Added | CPE Configuration |
AND
OR
*cpe:2.3:o:tecno-mobile:tecno/h622/tecno-id5b:8.1.0/o11019/g-180829v31:user/release-keys_firmware:-:*:*:*:*:*:*:*
OR
cpe:2.3:h:tecno-mobile:tecno/h622/tecno-id5b:8.1.0/o11019/g-180829v31:user/release-keys:-:*:*:*:*:*:*:*
|
|
| Added | CVSS V2 |
NIST (AV:L/AC:L/Au:N/C:C/I:C/A:C) |
|
| Added | CVSS V3.1 |
NIST AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
|
| Added | CWE |
NIST CWE-732 |
|
| Changed | Reference Type |
https://www.kryptowire.com/android-firmware-2019/ No Types Assigned |
https://www.kryptowire.com/android-firmware-2019/ Third Party Advisory |