dbcve.org
Device HelpApplication · Motorola

CVE-2021-3898

MEDIUM · 6.5 CVSS v3.1 Published 2022-04-22
Fix available
A fix is available. Upgrade to 2021-04-08 or later.
See remediation →
72/100
Remediation priority · Elevated
Remotely reachable No privileges

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
Versions of Motorola Ready For and Motorola Device Help Android applications prior to 2021-04-08 do not properly verify the server certificate which could lead to the communication channel being accessible by an attacker.

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 Motorola Ready For and Motorola Device Help Android applications fail to properly validate SSL/TLS server certificates during HTTPS connections. This improper certificate verification allows an attacker on the same network to perform a man-in-the-middle (MITM) attack, intercepting or manipulating communications between the app and backend servers by presenting an invalid or self-signed certificate that the app erroneously accepts.

MitigationUpdate both Motorola Ready For and Motorola Device Help Android applications to versions released on or after April 8, 2021, which contain proper server certificate validation. Until patched, avoid using these applications on untrusted networks such as public Wi-Fi.

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
Device HelpApplication
Affected:< 2021-04-08
Ready ForApplication
Affected:< 2021-04-08

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
Network
Complexity
Low
Privileges
None
User interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

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

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 if Motorola Device Help is installed
    Open Android Settings > Apps > Apps, then search for 'Motorola Device Help' or 'Motorola Help'. Alternatively, run: `adb shell pm list packages | grep -i motorola`
    Affected if The app is listed in installed packages
  2. Check Motorola Device Help version
    In Android Settings > Apps > Apps > Motorola Device Help > App info, locate the 'Version' or 'Version code' field. Compare against the April 8, 2021 release date.
    Affected if Version is dated before April 8, 2021 or shows a date earlier than 2021-04-08
  3. Identify if Motorola Ready For is installed
    Open Android Settings > Apps > Apps, search for 'Ready For' or run: `adb shell pm list packages | grep -i 'ready'`
    Affected if The app is listed in installed packages
  4. Check Motorola Ready For version
    In Android Settings > Apps > Apps > Ready For > App info, locate the 'Version' or 'Version code' field. Compare against the April 8, 2021 release date.
    Affected if Version is dated before April 8, 2021 or shows a date earlier than 2021-04-08

User is affected if either Motorola Device Help or Motorola Ready For Android app is installed with a version released before April 8, 2021, since the vulnerable certificate validation code exists in those older versions.

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.

dbcve · scoped
Upgrade available Upgrade to 2021-04-08 or later
Fixed in 2021-04-08
Interim mitigation

Update both Motorola Ready For and Motorola Device Help Android applications to versions released on or after April 8, 2021, which contain proper server certificate validation. Until patched, avoid using these applications on untrusted networks such as public Wi-Fi.

Recommended fix Moderate confidence

Motorola Device Help and Motorola Ready For versions 2021-04-08 or later

  1. Open the Google Play Store on the Android device
  2. Search for 'Motorola Device Help' and 'Motorola Ready For' applications
  3. Update both applications to the latest version available as of April 8, 2021 or later
  4. Verify the updated version by checking the app info in the Play Store to confirm the update date is on or after 2021-04-08

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Device Help Scoped from the published advisory
  • Consultation2.0 h
  • Implementation4.0 h
  • Testing6.0 h
  • Review / QA2.0 h
14.0 hours of engineering $2,380
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $3,808.

Scan for this in your stack

Free · runs locally
dbcve dependency scanner

Check whether your project pulls in CVE-2021-3898 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.

Get it on GitHub Scan in the browser

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-2021-3898 in production — separate from our analysis above.

No notes yet

Be the first to add a field note for this CVE — a mitigation you’ve verified, a version caveat, or a link to a working fix. Sign in above to contribute.

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
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data