CVE-2019-12254
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 · uneditedIn multiple Tecson Tankspion and GOKs SmartBox 4 products the affected application doesn't properly restrict access to an endpoint that is responsible for saving settings, to a unauthenticated user with limited access rights. Based on the lack of adequately implemented access-control rules, by accessing a specific uniform resource locator (URL) on the web server, a malicious user is able to change the application settings without authenticating at all, which violates originally laid ACL rules.
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 confidenceImproper access control vulnerability in Tecson Tankspion and GOKs SmartBox 4 web interfaces allows unauthenticated attackers to modify application settings by directly accessing a specific URL endpoint that lacks authorization checks, bypassing intended ACL rules.
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 dataall versionsall versionsall versionsall versionsall versionsCVSS 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
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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 checksWork through these to decide whether this CVE applies to you.
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Identify the device and firmware versionAccess the device's web interface or check the administrative console to confirm the exact model and firmware version. For Tecson Tankspion or GOK SmartBox 4 devices, look for a version or status page typically found under Settings, System Info, or About.Affected if The device model matches Gok Smartbox 4 Lan, Gok Smartbox 4 Lan Pro, Tecson Lx Q Net, Tecson Lx Net, or Tecson E Litro Net with any firmware version.
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Verify web interface is exposedConfirm that the device web interface is accessible over the network on HTTP/HTTPS ports (typically 80 or 443). Check your firewall rules and network configuration to determine if the management interface is reachable from external or untrusted networks.Affected if The web interface is accessible from network segments that should not have administrative access.
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Locate settings and configuration endpointsReview the web application structure by examining the HTML source, checking for JavaScript files, or using a web proxy to identify URLs related to configuration, settings, or admin functions. Common paths include /settings, /config, /admin, or similar.Affected if Settings endpoints are discoverable and accessible without authentication.
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Test for unauthorized access to configuration endpointsAttempt to access identified settings or configuration URLs directly without logging in or providing any credentials. Use a browser or curl/wget to request these endpoints and observe if the application returns configuration data or allows modifications without session validation.Affected if The application returns sensitive configuration data or allows changes without requiring valid authentication credentials.
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Inspect ACL and authorization configurationExamine the device's security settings, access control lists, or role-based access configuration if accessible through the administrative interface. Check whether all endpoints enforce proper authorization checks before allowing modifications.Affected if Authorization controls are missing, misconfigured, or can be bypassed for sensitive endpoints.
A user is affected if they operate any GOK SmartBox 4 or Tecson device with the web interface exposed, and settings can be accessed or modified without authentication.
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 authentication and role-based access control (RBAC) on all settings endpoints; require valid session authentication before allowing configuration changes.
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 h
- Review / QA4.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2019-12254 — 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-2019-12254 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
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