LineApplication · Linecorp

CVE-2016-1156

MEDIUM · 5.7 CVSS v3.0 Published 2016-02-19
Fix available
A fix is available. Upgrade to after 4.3.1 or later.
See remediation →
61/100
Remediation priority · Elevated
Remotely reachable

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
LINE 4.3.0.724 and earlier on Windows and 4.3.1 and earlier on OS X allows remote authenticated users to cause a denial of service (application crash) via a crafted post that is mishandled when displaying a Timeline.

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 · moderate confidence

A denial of service vulnerability in LINE messenger allows authenticated users to craft malicious posts containing specially crafted content that crashes the application when other users view the post in their Timeline. The vulnerability stems from improper handling of certain post content during the Timeline display process.

MitigationUsers should update to patched versions of LINE (later than 4.3.0 for Windows or 4.3.1 for OS X) when available. Until then, exercise caution when viewing Timeline posts from untrusted or unknown authenticated users.

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
LineApplication
Affected:<= 4.3.1<= 4.3.0.724

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
Low
User interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/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. Check LINE version on Windows
    Open LINE desktop app, click Settings icon, scroll to the bottom to find the version number in 'About LINE'. Alternatively, right-click the LINE desktop icon, select Properties, and check the Details tab for version information.
    Affected if the displayed version is 4.3.0.724 or any earlier version on Windows
  2. Check LINE version on OS X
    Open LINE desktop application, click the LINE menu in the menu bar, select 'About LINE', and note the version number displayed in the popup window.
    Affected if the displayed version is 4.3.1 or any earlier version on OS X
  3. Confirm Timeline feature is in use
    Launch the LINE desktop application and verify whether the Timeline (or Home) tab is visible and accessible in the main navigation. Check if the application has been used to view posts from other contacts.
    Affected if Timeline feature is present and enabled, and the user has viewed or could view posts from other authenticated users

You are affected if your installed LINE version is 4.3.0.724 or earlier on Windows, or 4.3.1 or earlier on OS X, and the Timeline feature is accessible and being used to view posts from other users.

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 a release after 4.3.1
Interim mitigation

Users should update to patched versions of LINE (later than 4.3.0 for Windows or 4.3.1 for OS X) when available. Until then, exercise caution when viewing Timeline posts from untrusted or unknown authenticated users.

Fix this in Line 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
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $7,808.

Scan for this in your stack

Free · runs locally
dbcve dependency scanner

Check whether your project pulls in CVE-2016-1156 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.

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-2016-1156 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