CVE-2017-2327
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 · uneditedA denial of service vulnerability in Juniper Networks NorthStar Controller Application prior to version 2.1.0 Service Pack 1 may allow an authenticated malicious user to consume large amounts of system resources leading to a cascading denial of services.
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 confidenceA denial of service vulnerability in Juniper Networks NorthStar Controller Application prior to version 2.1.0 Service Pack 1 allows an authenticated malicious user to consume excessive system resources, potentially causing a cascading denial of service across the application.
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<= 2.1.0CVSS 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
- Local
- Complexity
- Low
- Privileges
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/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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Confirm NorthStar Controller installationLocate and identify the Juniper NorthStar Controller Application installation in your environment. This may be found in standard application directories or listed in running services.Affected if The application is not installed or not present in the environment, the user is not affected.
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Identify installed versionUse system utilities, package management tools, or the application's built-in version command to retrieve the exact version number of the Juniper NorthStar Controller Application. Check the application documentation for version retrieval methods if not immediately apparent.Affected if Unable to determine the version, further investigation is required.
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Compare version to affected rangeCompare the identified version against the affected range: any version of Juniper NorthStar Controller Application less than or equal to 2.1.0 is vulnerable.Affected if The installed version is 2.1.0 or lower, the environment is affected by this vulnerability.
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Verify authentication mechanismsReview access control configurations and user authentication settings for the NorthStar Controller to understand the potential attack surface. An authenticated user is required to exploit this vulnerability.Affected if Unrestricted or weakly controlled authentication access exists, increasing the exploitability window.
A user is affected if the Juniper NorthStar Controller Application version is 2.1.0 or lower and the application is accessible to authenticated users who could trigger the excessive resource consumption.
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 Juniper NorthStar Controller Application to version 2.1.0 Service Pack 1 or later. Implement resource limits and monitoring to detect abnormal resource consumption patterns.
- Consultation4.0 h
- Implementation8.0 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-2017-2327 — 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-2017-2327 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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