Security readout for executives and security teams
Plain-English summary
The named iOS banking app version 4.0.3 failed to properly verify SSL server certificates. A person positioned between the user and the service could impersonate the server and potentially capture sensitive information, including login data. The sources do not identify a fixed version or current exploitation.
Executive priority
Treat this as a targeted mobile banking credential-exposure risk, not a broad enterprise infrastructure flaw. Priority depends on whether the affected app version is still in use or was used by customers whose credentials remain valid.
Technical view
CVE-2017-9595 describes missing X.509 certificate verification in First State Bank of Bigfork Mobile Banking for iOS 4.0.3. The CVE states this enables man-in-the-middle server spoofing and sensitive information disclosure via crafted certificates. No CVSS, CWE, patch, or fixed version is provided in the bundle.
Likely exposure
Exposure appears limited to users of the named iOS app version 4.0.3. Organizations should focus on historical or still-installed mobile banking clients, managed mobile device inventories, and any users who may have used the app on untrusted networks.
Exploitation context
The CVE is not listed as KEV in the provided bundle. Sources describe a man-in-the-middle attack condition, but provide no evidence of active exploitation. Exploitation would require attacker positioning to intercept or influence victim traffic and present a crafted certificate.
Researcher notes
The record is sparse: affected CPE data is unavailable, severity is unknown, and only one advisory reference is listed. Do not assume exploit prevalence or fixed versions without vendor confirmation. The core issue is TLS trust validation failure in a specific iOS banking app.
Mitigation direction
- Check vendor or App Store guidance for a fixed or replacement app version.
- Remove or block use of iOS app version 4.0.3 until certificate validation is confirmed.
- Notify affected users to change credentials if they used the app on untrusted networks.
- Monitor accounts for suspicious access tied to impacted mobile banking users.
Validation and detection
- Confirm whether iOS app version 4.0.3 exists in managed or user device inventories.
- Review mobile app testing evidence for proper TLS certificate validation.
- Check vendor release notes or support channels for remediation history.
- Correlate impacted users with authentication anomalies around historical app usage.
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
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CVE-2017-9595 mapping review
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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/advisory-44-credit-union-apps-for-ios-may-allow-login-credential-exposure-4d2f380b85c5CVE 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.