dbcve.org
EllentubeApplication · Warnerbros

CVE-2017-8939

MEDIUM · 5.9 CVSS v3.1 Published 2017-05-15
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
68/100
Remediation priority · Elevated
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
The Warner Bros. ellentube app 3.1.1 through 3.1.3 for iOS does not verify X.509 certificates from SSL servers, which allows man-in-the-middle attackers to spoof servers and obtain sensitive information via a crafted certificate.

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 Warner Bros. ellentube app for iOS versions 3.1.1 through 3.1.3 fails to validate X.509 certificates from SSL servers, allowing man-in-the-middle attackers to intercept encrypted traffic by presenting forged certificates and obtain sensitive user information.

MitigationUpdate the app to a version that implements proper SSL/TLS certificate validation with certificate pinning or ensure the URLSession delegate properly validates server certificates before establishing secure connections.

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
EllentubeApplication
Affected:= 3.1.1= 3.1.2= 3.1.3

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
High
Privileges
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

CVSS:3.1/AV:N/AC:H/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. Identify the installed Ellentube app version
    On the iOS device, open the Settings app, go to General > iPhone Storage (or Apps > General > iPhone Storage), scroll to find Ellentube, and record the version number shown
    Affected if The version displayed is 3.1.1, 3.1.2, or 3.1.3
  2. Confirm version via App Store listing
    Open the Apple App Store, search for Ellentube, and view the version information on the app's store page
    Affected if The listed version matches 3.1.1, 3.1.2, or 3.1.3
  3. Verify network usage
    Observe whether the app loads video content, streams media, or communicates with remote servers while connected to the internet
    Affected if The app transmits data over the network, which would expose traffic to interception due to the missing certificate validation

You are affected if the installed Ellentube app version is 3.1.1, 3.1.2, or 3.1.3 and the app is used to access network content.

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

Update the app to a version that implements proper SSL/TLS certificate validation with certificate pinning or ensure the URLSession delegate properly validates server certificates before establishing secure connections.

Fix this in Ellentube Scoped from the published advisory
  • Consultation4.0 h
  • Implementation16.0 h
  • Testing8.0 h
  • Review / QA4.0 h
32.0 hours of engineering $5,600
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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-2017-8939 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