CVE-2017-2306
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 · uneditedOn Juniper Networks Junos Space versions prior to 16.1R1, due to an insufficient authorization check, readonly users on the Junos Space administrative web interface can execute code on the device.
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 confidenceJunos Space versions prior to 16.1R1 contain an insufficient authorization check in the administrative web interface that allows readonly users to execute arbitrary code on the device, effectively enabling privilege escalation through the web UI.
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<= 16.1CVSS 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
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.0/AV:N/AC:L/PR:L/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 Junos Space versionAccess the Junos Space web UI and navigate to Administration > System > Software or use the CLI command 'show version' on the Space appliance to retrieve the installed software version number.Affected if The displayed version is 16.1 or any version prior to 16.1R1 (for example, 16.1R0, 15.2R#, 14.x, etc.)
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Confirm web management interface is activeVerify that the Junos Space web interface (HTTPS on port 443 or configured alternate port) is accessible and responding. Check via browser or command line: curl -k https://<space-hostname>/Affected if The web interface responds and is reachable from the network where attackers could send requests.
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Review user accounts for readonly role assignmentsLog into Junos Space as an administrator and navigate to Administration > Users > Users to list all configured user accounts. Identify any accounts assigned the 'Read Only' role or 'readonly' privilege level.Affected if One or more user accounts exist with the Read Only role assigned; these accounts would have the capability to exploit the privilege escalation flaw.
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Check audit logs for suspicious activityExamine Junos Space audit logs (Administration > Logs > Audit Log) for entries indicating unusual administrative actions, such as configuration changes or API calls performed by read-only accounts.Affected if Audit logs show actions executed by accounts that should only have read-only permissions.
You are affected if Junos Space version is 16.1 or earlier AND the web interface is accessible AND readonly user accounts exist in the system.
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 dataUpgrade Junos Space to version 16.1R1 or later to obtain the patched authorization logic, and review user privilege assignments to ensure only necessary personnel have elevated access.
- Consultation4.0 h
- Implementation8.0 h
- Testing4.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $5,120.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2017-2306 — 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-2017-2306 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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