CVE-2017-3217
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 · uneditedCalAmp LMU 3030 series OBD-II CDMA and GSM devices has an SMS (text message) interface that can be deployed where no password is configured for this interface by the integrator / reseller. This interface must be password protected, otherwise, the attacker only needs to know the phone number of the device (via an IMSI Catcher, for example) to send administrative commands to the device. These commands can be used to provide ongoing, real-time access to the device and can configure parameters such as IP addresses, firewall rules, and passwords.
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 confidenceCalAmp LMU 3030 series OBD-II telematics devices contain an unprotected SMS administrative interface. When integrators fail to configure a password for this interface, attackers who obtain the device's phone number (trivially via IMSI catcher) can send unauthenticated administrative commands to modify IP settings, firewall rules, and credentials, achieving persistent remote 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 dataall versionsall versionsall versionsCVSS 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:3.0/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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Verify SMS administrative interface configurationAccess the device's telematics management console or administrative interface and navigate to SMS/ messaging settings. Check whether the SMS administrative interface is enabled and if a password or PIN is required for administrative commands.Affected if The SMS interface is enabled but password protection is not configured or is disabled.
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Review device SMS command access controlsExamine the device's security or access control configuration files (typically accessible via the device's web UI or provisioning tool) to determine if SMS-based administrative commands require authentication.Affected if Administrative SMS commands can be sent without any password or authentication token.
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Confirm operational necessity of SMSReview device deployment documentation or management system to determine whether SMS functionality is required for the device's intended operational use case.Affected if SMS is enabled and not explicitly required for the deployment, but has no password protection.
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Check for default or weak SMS passwordsIf a password is configured, verify it is not a default, weak, or easily guessable password (such as 0000, 1234, or the device serial number) by reviewing configuration exports or consulting the device provisioning system.Affected if A default, weak, or manufacturer-default password is in use for the SMS administrative interface.
The device is affected if the SMS administrative interface is enabled without password protection, allowing unauthenticated administrative commands to be executed via SMS.
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 dataEnable and enforce password protection on the SMS interface for all deployed devices, and ensure integrators/resellers are required to configure passwords before deployment. Consider disabling SMS if not operationally required, or network-segmenting devices.
- Consultation6.0 h
- Implementation12.0 h
- Testing8.0 h
- Review / QA4.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2017-3217 — 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-2017-3217 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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