CVE-2018-0014
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 · uneditedJuniper Networks ScreenOS devices do not pad Ethernet packets with zeros, and thus some packets can contain fragments of system memory or data from previous packets. This issue is often detected as CVE-2003-0001. The issue affects all versions of Juniper Networks ScreenOS prior to 6.3.0r25.
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 confidenceJuniper Networks ScreenOS devices fail to pad Ethernet packets with zeros, causing fragments of system memory or data from previous packets to be transmitted in outgoing packets. This information disclosure vulnerability affects all ScreenOS versions prior to 6.3.0r25 and is essentially the same issue as the well-known CVE-2003-0001.
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= 6.3.0r1= 6.3.0r2= 6.3.0r3= 6.3.0r4= 6.3.0r5= 6.3.0r6= 6.3.0r7= 6.3.0r8= 6.3.0r9= 6.3.0r10= 6.3.0r11= 6.3.0r12CVSS 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
- Adjacent
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- None
- Availability
- None
CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
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.
-
Identify ScreenOS versionAccess the Juniper device console or CLI and run the command 'get system information' or 'show version' to display the installed ScreenOS version and build numberAffected if The displayed version is 6.3.0r1 through 6.3.0r12, or any version prior to 6.3.0r25
-
Confirm device model runs ScreenOSVerify that the Juniper device is a ScreenOS-based product (such as SSG, NS, or ISG series) by checking the device model in the CLI output using 'get system information' or 'show system info'Affected if The device runs ScreenOS firmware and the version check above shows a vulnerable version
-
Verify network exposureDetermine if the device has external network interfaces or participates in untrusted network segments where it transmits Ethernet frames to other hostsAffected if The device transmits Ethernet traffic to untrusted networks and runs a vulnerable ScreenOS version
A user is affected if their Juniper ScreenOS device runs firmware version 6.3.0r1 through r12 (or any version prior to r25) and transmits Ethernet frames to network segments where disclosure of frame contents could be observed.
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 ScreenOS devices to version 6.3.0r25 or later to implement proper zero-padding of Ethernet frames. If upgrade is not feasible due to end-of-life status, consider replacing affected devices or implementing network segmentation to limit exposure.
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 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 $5,600.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2018-0014 — 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-2018-0014 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
Be the first to add a field note for this CVE — a mitigation you’ve verified, a version caveat, or a link to a working fix. Sign in above to contribute.
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