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.

Metrics

 

CVSS Version 4.0 CVSS Version 3.x CVSS Version 2.0

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.

CVSS 4.0 Severity and Vector Strings:

NIST: NVD

N/A

NVD assessment not yet provided.

CVSS 3.x Severity and Vector Strings:

NIST: NVD

Base Score:  7.8 HIGH

Vector:  CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS 2.0 Severity and Vector Strings:

NIST: NVD

Base Score:  7.2 HIGH

Vector:  (AV:L/AC:L/Au:N/C:C/I:C/A:C)

References to Advisories, Solutions, and Tools

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Hyperlink	Resource
https://www.kryptowire.com/android-firmware-2019/	Third Party Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-78	Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')	NIST

Known Affected Software Configurations Switch to CPE 2.2

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Change History

3 change records found show changes

CVE Modified by MITRE 5/14/2024 1:44:11 AM

Action	Type	Old Value	New Value

CWE Remap by NIST 8/24/2020 1:37:01 PM

Action	Type	Old Value	New Value
Changed	CWE	CWE-732	CWE-78

Initial Analysis by NIST 12/02/2019 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