CVE-2019-12803
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 Hunesion i-oneNet version 3.0.7 ~ 3.0.53 and 4.0.4 ~ 4.0.16, the specific upload web module doesn't verify the file extension and type, and an attacker can upload a webshell. After the webshell upload, an attacker can use the webshell to perform remote code exection such as running a system command.
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 Hunesion i-oneNet upload web module lacks any file extension or content-type validation, allowing unauthenticated attackers to upload arbitrary files including malicious webshells. Once the webshell is uploaded, attackers can execute remote commands on the underlying system.
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>= 3.0.7, <= 3.0.53>= 4.0.4, <= 4.0.16CVSS 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 Hunesion i-oneNet installationLocate the i-oneNet application on the system. Check for its installation directory, service, or web application files. This may be found in C:\inetpub\wwwroot\, /var/www/, or a custom installation path depending on deployment.Affected if The product is installed on the system
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Determine installed versionCheck the application's version information, typically found in an about page, version file, or configuration file within the installation directory. Compare the version number against the affected ranges: 3.0.7 through 3.0.53, or 4.0.4 through 4.0.16.Affected if The installed version falls within any of the affected ranges (3.0.7-3.0.53 or 4.0.4-4.0.16)
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Verify upload web module is accessibleLocate the upload functionality within the web application. This is typically accessible via a web URL path such as /upload, /file/upload, or a similar endpoint. Attempt to access the upload page to confirm it is exposed.Affected if The upload web module is accessible and functional
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Inspect file upload validation settingsExamine the upload handling code or configuration files for the web module. Look for file extension validation, MIME-type checking, or content validation logic. Check if any allowlist or blocklist for file types is implemented.Affected if No file extension validation, MIME-type validation, or content-type validation is implemented for the upload module
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Check for suspicious files in web directoriesScan web-accessible directories (such as /upload/, /images/, /files/, or the web root) for unexpected file types including .asp, .jsp, .php, .exe, .cmd, or other executable extensions that should not be present.Affected if Unexpected executable files, scripts, or potential webshells are found in web-accessible directories
A system is affected if Hunesion i-oneNet is installed with a version in the 3.0.7-3.0.53 or 4.0.4-4.0.16 range and the upload module lacks file validation controls.
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 strict allowlist-based file extension validation and MIME-type verification for all uploaded files, combined with storing uploads outside web-accessible directories and renaming files to prevent execution.
- Consultation6.0 h
- Implementation12.0 h
- Testing8.0 h
- Review / QA4.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $8,448.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2019-12803 — 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-2019-12803 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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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.
- 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