Security readout for executives and security teams
Plain-English summary
This CVE concerns older iOS versions of the Warner Bros. ellentube app failing to properly check server certificates. A person positioned between the user and the network could impersonate a server and view sensitive data the app should have protected.
Executive priority
Treat this as a targeted mobile exposure cleanup item, not a broad enterprise emergency. Prioritize if managed devices still use the old app or if users may handle sensitive data over untrusted networks.
Technical view
The CVE description states ellentube for iOS versions 3.1.1 through 3.1.3 did not verify X.509 certificates from SSL servers. That creates a certificate-validation failure enabling man-in-the-middle server spoofing with a crafted certificate. No CVSS, CWE, or vendor fix details are provided in the bundle.
Likely exposure
Exposure appears limited to devices running Warner Bros. ellentube iOS app versions 3.1.1 through 3.1.3. The source bundle’s structured affected fields are incomplete, so confirm through mobile device inventory rather than product names alone.
Exploitation context
The bundle does not show CISA KEV listing or other evidence of active exploitation. Abuse would require a man-in-the-middle position, such as control of a network path, malicious Wi-Fi, or similar interception opportunity.
Researcher notes
Evidence is sparse: the CVE description names the app and versions, but the structured affected data is n/a and no scoring or patch detail is supplied. Avoid assuming a fixed release unless confirmed from vendor or App Store history.
Mitigation direction
- Inventory managed iOS devices for ellentube versions 3.1.1 through 3.1.3.
- Remove vulnerable versions or replace them according to current vendor/App Store guidance.
- Check vendor guidance for any fixed version or retirement notice.
- Restrict use of untrusted networks for affected devices until remediated.
- Monitor for unexpected traffic associated with the app where logs exist.
Validation and detection
- Confirm whether the vulnerable app and versions exist in MDM inventory.
- Verify affected devices no longer run versions 3.1.1 through 3.1.3.
- Review the CVE record against internal asset naming for Warner Bros. ellentube.
- Use controlled mobile app testing to confirm certificate validation behavior if the app remains required.
- Document whether the app is unsupported, removed, or updated.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CVE-2017-8939 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://medium.com/%40chronic_9612/follow-up-76-popular-apps-confirmed-vulnerable-to-silent-interception-of-tls-protected-data-64185035029fCVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.