CVE-2018-6448
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 vulnerability in the management interface in Brocade Fabric OS Versions before Brocade Fabric OS v9.0.0 could allow a remote attacker to perform a denial of service attack on the vulnerable host.
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 exists in the management interface of Brocade Fabric OS versions prior to v9.0.0. A remote attacker can send malicious requests to the management interface, causing the system to become unavailable. The CVSS 7.5 indicates network-exploitable with low attack complexity and no authentication required.
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< 9.0.0CVSS 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
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/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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Identify Fabric OS versionLog into the fabric switch and run the 'version' or 'firmwareShow' command to display the current Fabric OS version. Alternatively, access the management web interface and check the system information page.Affected if The displayed version is any release prior to 9.0.0 (for example, 8.x.x series).
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Verify management interface statusCheck if the management interface (HTTP/HTTPS on ports 80/443 or the dedicated management port) is enabled and operational. Use the 'ipAddrShow' or 'interfaceConfigShow' command to list active management interfaces.Affected if The management interface is enabled and responds to requests.
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Assess network exposure of management interfaceDetermine whether the management interface is reachable from untrusted networks. Review firewall rules, ACLs, and switch port configurations. Use 'switchShow' or check VLAN settings to identify which networks can reach the management interface.Affected if The management interface is accessible from networks outside the trusted administrative zone, such as the internet or guest VLANs.
A system is affected if it runs any Fabric OS version earlier than 9.0.0 AND has its management interface network-accessible, allowing unauthenticated remote attackers to trigger the DoS condition.
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 data9.0.0
Upgrade Brocade Fabric OS to version 9.0.0 or later. As an interim measure, restrict network access to the management interface using firewalls or ACLs to prevent unauthorized external access.
- Consultation3.0 h
- Implementation6.0 h
- Testing3.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2018-6448 — 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-2018-6448 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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- Version or environment caveats, and links to real fixes
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