CVE-2014-2714
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 · uneditedThe Enhanced Web Filtering (EWF) in Juniper Junos before 10.4R15, 11.4 before 11.4R9, 12.1 before 12.1R7, 12.1X44 before 12.1X44-D20, 12.1X45 before 12.1X45-D10, and 12.1X46 before 12.1X46-D10, as used in the SRX Series services gateways, allows remote attackers to cause a denial of service (flow daemon crash and restart) via a crafted URL.
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 denial of service vulnerability exists in the Enhanced Web Filtering (EWF) feature of Juniper Junos on SRX Series services gateways. Remote attackers can cause the flow daemon (flowd) to crash and restart by sending a specially crafted URL through the EWF inspection. The vulnerability stems from improper handling of malformed URLs during content filtering operations.
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= 10.4= 11.4= 12.1= 12.1x44= 12.1x45= 12.1x46CVSS 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
- M
- Authentication
- None
- Confidentiality
- None
- Integrity
- None
- Availability
- Complete
AV:N/AC:M/Au:N/C:N/I:N/A:C
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 modelRun 'show chassis hardware' or check the device model to confirm it is a Juniper SRX Series services gatewayAffected if The device is not an SRX Series gateway (this CVE only affects SRX Series)
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Check the Junos versionRun 'show version' to display the installed Junos versionAffected if The version matches one of the affected releases: 10.4, 11.4, 12.1, 12.1x44, 12.1x45, or 12.1x46
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Verify Enhanced Web Filtering is enabledRun 'show configuration | match ewf' or 'show services url-filtering' to check if EWF is configuredAffected if EWF is actively configured or enabled on the device (the vulnerability only triggers when EWF is in use)
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Check content filtering configurationRun 'show configuration | match content-filtering' to see if content filtering operations are activeAffected if Content filtering is enabled and inspecting traffic (the flaw occurs during content filtering of URLs)
A user is affected if they are running a vulnerable Junos version on an SRX Series device with Enhanced Web Filtering and content filtering enabled, as the crash occurs when malformed URLs are processed through EWF inspection.
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 to the specified patched versions (10.4R15, 11.4R9, 12.1R7, 12.1X44-D20, 12.1X45-D10, or 12.1X46-D10 or later). If upgrading is not immediately feasible, consider disabling EWF or restricting management/filtering interfaces to trusted sources via access lists.
- Consultation6.0 h
- Implementation4.0 h
- Testing10.0 h
- Review / QA4.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2014-2714 — 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-2014-2714 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
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