FortiportalApplication · Fortinet
CVE-2017-7340
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 · uneditedA Cross-Site Scripting vulnerability in Fortinet FortiPortal versions 4.0.0 and below allows an attacker to execute unauthorized code or commands via the applicationSearch parameter in the FortiView functionality.
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 confidenceA reflected Cross-Site Scripting (XSS) vulnerability exists in Fortinet FortiPortal versions 4.0.0 and below. The vulnerability is located in the applicationSearch parameter within the FortiView functionality. Attackers can inject malicious JavaScript or HTML code through this parameter, which gets reflected back to users without proper sanitization, allowing execution of unauthorized client-side code in the context of affected users' sessions.
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
FortiportalApplication
<= 4.0.0CVSS 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
- Required
- Scope
- Changed
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/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 FortiPortal versionAccess the FortiPortal admin interface or check system information page for the installed version number. This is typically found in the About or System Settings section of the web UI.Affected if The displayed version number is 4.0.0 or lower.
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Verify FortiView module accessibilityLog into FortiPortal and navigate to the FortiView functionality. Confirm the module is accessible to your user account.Affected if The FortiView module is present and accessible without additional security controls.
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Test applicationSearch parameter for XSSUsing a browser or HTTP tool, submit a crafted request to the FortiView endpoint containing the applicationSearch parameter with a test XSS payload such as <script>alert(1)</script>. Observe whether the payload is reflected unescaped in the response.Affected if The payload is reflected back in the HTML output without encoding or sanitization.
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Check input validation settingsReview FortiPortal configuration settings for the FortiView module, specifically looking for input validation or web application firewall settings related to the applicationSearch parameter.Affected if No input validation or output encoding is configured for the applicationSearch parameter.
You are affected if FortiPortal version is 4.0.0 or below AND the FortiView module with the applicationSearch parameter is accessible and reflects unsanitized input.
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 dataUpgrade FortiPortal to a version higher than 4.0.0 which contains the security patch. Additionally, implement robust input validation and output encoding on the applicationSearch parameter and all user-supplied inputs in the FortiView module to prevent XSS attacks.
Fix this in Fortiportal
Scoped from the published advisory
- Consultation4.0 h
- Implementation6.0 h
- Testing4.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $4,544.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2017-7340 — 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-2017-7340 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
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