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Truenas FirmwareOperating system · Ixsystems

CVE-2024-11946

MEDIUM · 6.5 CVSS v3.1 Published 2024-12-30
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
70/100
Remediation priority · Elevated
No privileges Zero-click

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
iXsystems TrueNAS CORE fetch_plugin_packagesites tar Cleartext Transmission of Sensitive Information Vulnerability. This vulnerability allows network-adjacent attackers to tamper with firmware update files on affected installations of iXsystems TrueNAS devices. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of firmware updates. The issue results from the use of an insecure protocol to deliver updates. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of root. Was ZDI-CAN-25668.

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

The vulnerability exists in TrueNAS CORE's fetch_plugin_packagesites functionality where firmware updates are delivered using an insecure protocol, allowing network-adjacent attackers to intercept and tamper with update files. This cleartext transmission enables man-in-the-middle attacks that can modify firmware images. When combined with other vulnerabilities, this tampering can lead to arbitrary code execution with root privileges.

MitigationConfigure firmware updates to use HTTPS or other encrypted protocols with certificate validation, implement cryptographic code signing verification for all firmware images, and ensure network access controls restrict update sources to trusted endpoints.

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
Truenas FirmwareOperating system
Affected:= 13.0

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
Adjacent
Complexity
Low
Privileges
None
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
None

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/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. Verify TrueNAS CORE version
    Run 'midclt call system.version' via CLI or check System > Information in the web UI
    Affected if Version is exactly 13.0 (the only affected version listed)
  2. Confirm fetch_plugin_packagesites is in use
    Check the system configuration for plugin package sites: look for configured plugin repositories under System > Plugins > Settings, or inspect /usr/local/etc/plugin_config.json if it exists
    Affected if Plugin package sites are configured and the fetch_plugin_packagesites function is actively used or scheduled
  3. Inspect protocol for plugin/package updates
    Examine the plugin repository URLs in the configuration. Check if they use http:// (insecure) instead of https:// (secure)
    Affected if Package site URLs begin with http:// rather than https://, indicating cleartext transport
  4. Check firmware update source configuration
    Navigate to System > Update in the web UI, or inspect /usr/local/etc/ui.json and update-related configuration files for the update server URL
    Affected if The firmware update server is configured using an http:// URL rather than https://
  5. Review network traffic logs for update connections
    Use packet capture (tcpdump) or check system logs for outgoing connections to update servers, observing if traffic to firmware/update endpoints is unencrypted
    Affected if Network logs show cleartext HTTP connections to firmware or plugin update servers

A system is affected if it runs TrueNAS CORE 13.0 and has fetch_plugin_packagesites or firmware update sources configured to use insecure HTTP URLs instead of HTTPS.

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.

From vendor data
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Configure firmware updates to use HTTPS or other encrypted protocols with certificate validation, implement cryptographic code signing verification for all firmware images, and ensure network access controls restrict update sources to trusted endpoints.

Fix this in Truenas Firmware Scoped from the published advisory
  • Consultation3.0 h
  • Implementation6.0 h
  • Testing3.0 h
  • Review / QA2.0 h
14.0 hours of engineering $2,490
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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-2024-11946 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
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