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FortianalyzerApplication · Fortinet

CVE-2020-12814

MEDIUM · 5.4 CVSS v3.1 Published 2021-11-02
Fix available
A fix is available. Upgrade to after 6.0.6 or later.
See remediation →
58/100
Remediation priority · Elevated
Remotely reachable

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 · unedited
A improper neutralization of input during web page generation ('cross-site scripting') in Fortinet FortiAnalyzer version 6.0.6 and below, version 6.4.4 allows attacker to execute unauthorized code or commands via specifically crafted requests to the web GUI.

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 confidence

Stored cross-site scripting (XSS) vulnerability in Fortinet FortiAnalyzer web GUI versions 6.0.6 and below and 6.4.4 allows attackers to inject malicious scripts through specially crafted HTTP requests. The injected payload persists and executes when other authenticated users access the compromised web pages.

MitigationUpgrade FortiAnalyzer to a patched version (6.2.x or 6.4.5+). If immediate patching is not possible, implement WAF rules to filter malicious XSS payloads and restrict administrative access to trusted IP ranges.

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
FortianalyzerApplication
Affected:>= 6.0.0, <= 6.0.6= 6.4.4

CVSS 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
Low
User interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None

CVSS:3.1/AV:N/AC:L/PR:L/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 checks

Work through these to decide whether this CVE applies to you.

  1. Identify FortiAnalyzer installation
    Check if FortiAnalyzer is running by accessing the web GUI via HTTPS on port 443 or checking the system hostname/response headers. In FortiAnalyzer CLI, run 'get system status' to confirm the device model and firmware name.
    Affected if The device is FortiAnalyzer and responds to administrative queries.
  2. Check FortiAnalyzer firmware version
    In the FortiAnalyzer CLI, run: 'get system status' or 'fnsysctl get system status'. Look for the 'FortiAnalyzer' version number in the output. Alternatively, log into the web GUI and navigate to System Settings > Dashboard > System Information to view the Firmware version.
    Affected if The displayed version matches 6.0.0 through 6.0.6, or exactly 6.4.4.
  3. Verify web GUI is enabled
    In FortiAnalyzer CLI, run: 'get system interface' to list network interfaces. Confirm that the HTTPS administrative interface is bound to an accessible port (default 443). Check for any http-server-type setting that enables the web GUI.
    Affected if The web GUI administrative interface is enabled and accessible on HTTP/HTTPS ports.
  4. Review recent administrative web sessions
    In the FortiAnalyzer web GUI, go to Log View > Event > Administrator Events. Look for any unusual or unauthorized administrative login events or configuration changes around the time frame the CVE was disclosed (May 2020).
    Affected if There are unexpected administrative actions or sessions from unknown IP addresses.

The environment is affected if FortiAnalyzer is installed with firmware version 6.0.0 through 6.0.6 or exactly version 6.4.4, and the web GUI administrative interface is enabled and accessible.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

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.

dbcve · scoped
Upgrade available Upgrade to a release after 6.0.6
Interim mitigation

Upgrade FortiAnalyzer to a patched version (6.2.x or 6.4.5+). If immediate patching is not possible, implement WAF rules to filter malicious XSS payloads and restrict administrative access to trusted IP ranges.

Recommended fix High confidence

FortiAnalyzer 6.0.7+ or 6.4.5+ (or latest 7.x stable release)

  1. 1. Identify current FortiAnalyzer version by logging into the web GUI or running 'get system status' via CLI
  2. 2. Schedule a maintenance window for the upgrade (Fortinet recommends backing up the configuration before upgrading)
  3. 3. Download the appropriate firmware image from Fortinet Customer Support portal (fortinet.com) - select version 6.0.7 or later, or 6.4.5 or later, or latest 7.x release
  4. 4. Upload the firmware image via web GUI (System Settings > Firmware) or via CLI using 'execute restore firmware'
  5. 5. After reboot, verify the upgrade was successful by checking the version with 'get system status'
  6. 6. Verify the vulnerability is resolved by confirming the patched version is running
Caveat Review Fortinet release notes for version-specific notes; some GUI features may have changed in newer versions; ensure compatibility with FortiManager if deployed in integrated mode

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Fortianalyzer Scoped from the published advisory
  • Consultation3.0 h
  • Implementation4.0 h
  • Testing4.0 h
  • Review / QA2.0 h
13.0 hours of engineering $2,280
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2020-12814 in production — separate from our analysis above.

No notes yet

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What this is

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.

What belongs here
  • 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