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Camon Iclick 2 FirmwareOperating system · Tecno Mobile

CVE-2019-15346

HIGH · 7.8 CVSS v3.1 Published 2019-11-14
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
80/100
Remediation priority · High
Zero-click

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
The Tecno Camon iClick 2 Android device with a build fingerprint of TECNO/H622/TECNO-ID6:8.1.0/O11019/F-180824V116: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.service.FunctionService that allows any app co-located on the device to supply the file path to a Dalvik Executable (DEX) file which it will dynamically load within its own process and execute in with its own system privileges. 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 code as the system user can allow a third-party app to factory reset the device, obtain the user's Wi-Fi passwords, 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.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · high confidence

The Tecno Camon iClick 2 Android device ships with a pre-installed platform app (com.lovelyfont.defcontainer, v7.0.11) containing an exported service (FunctionService) that allows any co-located app to supply a Dalvik Executable (DEX) file path which the service then dynamically loads and executes within its own process using system privileges. This zero-permission attack vector cannot be disabled by the user.

MitigationUsers cannot directly patch this vulnerability; mitigation requires the device OEM (Tecno) to release a firmware update that removes or secures the exported service. Users should avoid installing untrusted applications and monitor for OEM security updates.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
Camon Iclick 2 FirmwareOperating system
Affected:all versions

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

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

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Identify device model
    Check if the Android device is a Tecno Camon iClick 2 by going to Settings > About Phone > Model Number or using the command `getprop ro.product.model` via ADB
    Affected if The device model is Tecno Camon iClick 2
  2. Check if vulnerable app is installed
    Look for the package com.lovelyfont.defcontainer in Settings > Apps > All Apps, or use ADB command: `pm list packages | grep lovelyfont`
    Affected if The package com.lovelyfont.defcontainer is present on the device
  3. Verify app version
    Check the version of com.lovelyfont.defcontainer in Settings > Apps > App Info > Version, or use ADB command: `dumpsys package com.lovelyfont.defcontainer | grep versionName`
    Affected if The installed version is 7.0.11 or any version on the Camon iClick 2 firmware
  4. Confirm exported service availability
    Use ADB command: `dumpsys package com.lovelyfont.defcontainer | grep -A 10 FunctionService` to inspect if the FunctionService is exported and accessible to other apps
    Affected if The FunctionService component is exported and allows other apps to send requests

If the device is a Tecno Camon iClick 2 with com.lovelyfont.defcontainer installed (any version), the device is affected by this vulnerability because the exported FunctionService can be invoked by any app to execute arbitrary DEX code with system privileges.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

From vendor data
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Users cannot directly patch this vulnerability; mitigation requires the device OEM (Tecno) to release a firmware update that removes or secures the exported service. Users should avoid installing untrusted applications and monitor for OEM security updates.

Fix this in Camon Iclick 2 Firmware Scoped from the published advisory
  • Consultation6.0 h
  • Testing3.0 h
  • Review / QA2.0 h
11.0 hours of engineering $2,010
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2019-15346 in production — separate from our analysis above.

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
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