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Lenovo HelpApplication · Lenovo

CVE-2017-3776

HIGH · 7.5 CVSS v3.0 Published 2018-04-19
Fix available
A fix is available. Upgrade to 6.1.2.0327 or later.
See remediation →
84/100
Remediation priority · High
Remotely reachable No privileges 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
Lenovo Help Android mobile app versions earlier than 6.1.2.0327 allowed information to be transmitted over an HTTP channel, permitting others observing the channel to potentially see this information.

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 Lenovo Help Android mobile app versions before 6.1.2.0327 transmitted sensitive information over unencrypted HTTP channels instead of HTTPS, allowing network observers or man-in-the-middle attackers to intercept and view the transmitted data.

MitigationUpdate the Lenovo Help app to version 6.1.2.0327 or later, which implements HTTPS encryption for all network communications. If unable to update, avoid using the app on untrusted networks.

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
Lenovo HelpApplication
Affected:< 6.1.2.0327

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
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/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. Locate the Lenovo Help app on the device
    Open Android Settings > Apps > find Lenovo Help in the app list, or use ADB command: adb shell pm list packages | findstr lenovo.helpline
    Affected if Unable to locate the app means it is not installed; if found, proceed to version check
  2. Determine the installed version number
    In Settings > Apps > Lenovo Help, view the Version or Version Name field under App Info; alternatively, use ADB: adb shell dumpsys package com.lenovo.helpline | grep versionName
    Affected if The version shown is lower than 6.1.2.0327 (for example, 6.1.0.0315 or any version prior to 6.1.2.0327)
  3. Verify the app uses unencrypted HTTP
    Capture network traffic using a proxy tool (like Burp Suite or Charles) or use Android Studio Network Profiler while the app transmits data; inspect the traffic to confirm HTTP (port 80) is used instead of HTTPS (port 443)
    Affected if Network traffic shows requests to http:// URLs rather than https:// URLs, confirming unencrypted communication

The device is affected if the installed Lenovo Help version is below 6.1.2.0327 and the app transmits data over unencrypted HTTP channels.

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
Upgrade available Upgrade to 6.1.2.0327 or later
Fixed in 6.1.2.0327
Interim mitigation

Update the Lenovo Help app to version 6.1.2.0327 or later, which implements HTTPS encryption for all network communications. If unable to update, avoid using the app on untrusted networks.

Fix this in Lenovo Help Scoped from the published advisory
  • Consultation4.0 h
  • Implementation12.0 h
  • Testing8.0 h
  • Review / QA4.0 h
28.0 hours of engineering $4,880
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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-2017-3776 in production — separate from our analysis above.

No notes yet

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