CVE-2018-0591
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 · uneditedThe KINEPASS App for Android Ver 3.1.1 and earlier, and for iOS Ver 3.1.2 and earlier do 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 confidenceThe KINEPASS mobile applications for Android and iOS fail to validate X.509 certificates during SSL/TLS connections, allowing attackers to intercept encrypted communications by presenting fraudulent certificates and perform man-in-the-middle attacks.
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<= 3.1.1<= 3.1.2CVSS 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:3.0/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 checksWork through these to decide whether this CVE applies to you.
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Identify if KINEPASS app is deployed in your environmentCheck mobile device management (MDM) inventory, corporate app store, or conduct a network scan for devices with T Joy Kinepass installedAffected if The app is found on any managed mobile devices
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Determine the installed version of KINEPASSOn Android: Check Google Play Store app listing or device Settings > Apps > T Joy Kinepass > Version. On iOS: Check App Store app listing or Settings > General > iPhone Storage > T Joy KinepassAffected if Version is 3.1.1 or earlier on iOS, or 3.1.2 or earlier on Android
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Verify SSL certificate validation is implementedInspect the app's network configuration or proxy the app traffic through a testing proxy (like Burp Suite or OWASP ZAP) and attempt to present an invalid certificateAffected if The app accepts invalid or self-signed certificates without warning or rejection, allowing traffic to proceed
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Check if hostname verification is enabledPerform a MITM test by presenting a valid certificate for a different hostname and observe if the connection is rejectedAffected if The app accepts certificates that do not match the intended hostname
You are affected if T Joy Kinepass version 3.1.1 (iOS) or 3.1.2 (Android) or earlier is deployed in your environment and the app accepts invalid certificates or mismatched hostnames during SSL/TLS connections.
Generated from the published advisory. Verify against your own configuration.
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 dataImplement proper X.509 certificate chain validation in the app's network layer, including hostname verification and trust anchor checking. Users should update to patched versions when available.
- Consultation4.0 h
- Implementation12.0 h
- Testing6.0 h
- Review / QA3.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $7,040.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2018-0591 — 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 sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2018-0591 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- 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