CVE-2023-36609
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 · uneditedThe affected TBox RTUs run OpenVPN with root privileges and can run user defined configuration scripts. An attacker could set up a local OpenVPN server and push a malicious script onto the TBox host to acquire root privileges.
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 confidenceTBox RTU devices run OpenVPN with root privileges and support user-defined configuration scripts. An attacker with local network access can set up a rogue OpenVPN server and push malicious scripts to the TBox device, which execute with root privileges allowing full system compromise.
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<= 1.50.598<= 1.50.598<= 1.50.598<= 1.50.598<= 1.50.598CVSS 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
- High
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:H/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 TBox device modelCheck the device label, firmware banner, or system information to confirm the model is one of: Ms Cpu32, Ms Cpu32 S2, Lt2, Tg2, or Rm2Affected if The device is an Ovarro TBox model from the affected product list
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Check the firmware versionAccess the device's web interface, CLI, or system info page and locate the firmware version numberAffected if The firmware version is 1.50.598 or lower
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Verify OpenVPN is enabledCheck the TBox configuration or running services to confirm OpenVPN is active on the deviceAffected if OpenVPN is enabled and running on the device
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Confirm OpenVPN runs as rootInspect the OpenVPN service configuration or process list to determine the user context (for example, check the OpenVPN init script or running process user)Affected if OpenVPN is running with root/privileged user rights rather than a restricted service account
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Check for user-defined script supportReview the TBox OpenVPN configuration settings for any option allowing user-defined configuration scripts, custom scripts, or client script push capabilitiesAffected if User-defined configuration scripts or custom script execution is enabled or available in the OpenVPN setup
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Assess network exposureExamine network firewall rules, VLAN configuration, or access control lists to determine if the OpenVPN port (typically UDP/TCP 1194) is exposed to untrusted local network segmentsAffected if The device is on a network segment where unauthorized parties could establish a rogue OpenVPN server connection
The device is affected if it is an Ovarro TBox model (Ms Cpu32, Ms Cpu32 S2, Lt2, Tg2, or Rm2) running firmware <= 1.50.598, has OpenVPN enabled to run as root, and supports user-defined configuration scripts while being accessible to an untrusted local network.
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 dataRestrict network access to prevent unauthorized OpenVPN servers from connecting, disable or restrict user-defined configuration script execution, and reconfigure OpenVPN to run with least-privilege rather than root.
- Consultation6.0 h
- Implementation12.0 h
- Testing6.0 h
- Review / QA3.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-36609 — 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-2023-36609 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
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