CVE-2019-17102
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 · uneditedAn exploitable command execution vulnerability exists in the recovery partition of Bitdefender BOX 2, version 2.0.1.91. The API method `/api/update_setup` does not perform firmware signature checks atomically, leading to an exploitable race condition (TOCTTOU) that allows arbitrary execution of system commands. This issue affects: Bitdefender Bitdefender BOX 2 versions prior to 2.1.47.36.
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 command execution vulnerability exists in Bitdefender BOX 2's recovery partition. The /api/update_setup API method fails to perform firmware signature verification atomically, creating a TOCTTOU (time-of-check-time-of-use) race condition. An attacker can exploit this timing window to bypass signature validation and execute arbitrary system commands.
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< 2.1.47.36CVSS 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
- High
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:H/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 the device as Bitdefender BOX 2Check the device hostname, MAC address OUI (Bitdefender vendor prefix), or network fingerprint. Access the device's web interface or check /proc/cpuinfo on the device shell if available.Affected if The device is confirmed to be a Bitdefender BOX 2 unit
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Check the installed firmware versionAccess the device's admin interface and navigate to Settings > About, or query the device API for version information. On the device shell, check /etc/version or run 'fw_printenv' if available.Affected if The firmware version is below 2.1.47.36 (e.g., 2.1.x.x where x < 47, or any version earlier than 2.1.47.36)
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Verify the recovery partition is accessibleConfirm the device has a recovery partition by checking for /dev/mtdblock* entries related to recovery, or by accessing the recovery boot mechanism (often accessible via a physical reset button sequence or network boot).Affected if Recovery partition functionality is present and operational on the device
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Check if the /api/update_setup endpoint is exposedAttempt to access https://<device-ip>/api/update_setup or http://<device-ip>/api/update_setup from within the trusted network. This endpoint handles firmware update setup operations.Affected if The /api/update_setup API method is reachable and accepts requests without requiring authentication beyond the local network requirement
A user is affected if they are running Bitdefender BOX 2 firmware version below 2.1.47.36 with an accessible recovery partition and exposed /api/update_setup API endpoint.
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 data2.1.47.36
Upgrade Bitdefender BOX 2 firmware to version 2.1.47.36 or later, which implements atomic firmware signature verification to prevent the race condition.
- Consultation8.0 h
- Implementation24.0 h
- Testing16.0 h
- Review / QA8.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2019-17102 — 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-2019-17102 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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- Version or environment caveats, and links to real fixes
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