CVE-2017-2311
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, an unauthenticated remote attacker with network access to Junos space device can easily create a denial of service condition.
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 a vulnerability allowing unauthenticated remote attackers with network access to cause a denial of service condition. The vulnerability is exploitable without credentials, requiring only network connectivity to the Junos Space device.
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
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- Low
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
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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Confirm Junos Space is deployedIdentify Junos Space appliances in your environment by checking for devices running the Junos Space application, typically accessible via HTTPS on port 443 to the management interfaceAffected if Junos Space software is present in the environment
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Identify the installed Junos Space versionLog into the Junos Space web interface and navigate to the Administration section, or run 'show version' via the Junos Space CLI to retrieve the exact software version numberAffected if The version displayed is lower than 16.1R1 (for example, 16.1, 15.2, 15.1, 14.x, or earlier releases)
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Verify network accessibility to the Junos Space management interfaceDetermine if the Junos Space management IP address is reachable from untrusted networks by reviewing firewall rules, ACLs, or network segmentation configurationsAffected if The Junos Space management interface is exposed to networks where untrusted or anonymous users can establish network connections to the device
You are affected if Junos Space is running and the installed version is 16.1 or earlier (below 16.1R1), especially if the management interface is accessible from untrusted networks.
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. As a compensating control, restrict network access to Junos Space management interfaces using firewalls or ACLs to limit exposure to untrusted networks.
- Consultation2.0 h
- Implementation4.0 h
- Testing4.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2017-2311 — 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-2017-2311 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
- No spam, self-promotion, credentials, or personal data