CVE-2018-6435
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 secryptocfg command of Brocade Fabric OS command line interface (CLI) versions before 8.2.1, 8.1.2f, 8.0.2f, 7.4.2d could allow a local attacker to escape the restricted shell and, and gain root access.
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 vulnerability in the secryptocfg command of Brocade Fabric OS CLI allows a local attacker to escape the restricted shell environment and escalate privileges to root. This is a local privilege escalation vulnerability affecting specific versions prior to 8.2.1, 8.1.2f, 8.0.2f, and 7.4.2d.
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>= 7.4.2, < 7.4.2d>= 8.0.2, < 8.0.2f>= 8.1.2, < 8.1.2f>= 8.2.0, < 8.2.1CVSS 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
- Local
- Complexity
- Low
- Privileges
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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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Check Fabric OS versionExecute the CLI command 'version' or 'firmwareShow' to retrieve the installed Fabric OS versionAffected if The version shown is 7.4.2 through 7.4.2c, 8.0.2 through 8.0.2e, 8.1.2 through 8.1.2e, or 8.2.0 through 8.2.0
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Confirm secryptocfg command availabilityAttempt to access the secryptocfg command in the CLI by typing 'secryptocfg' at the command promptAffected if The command is accessible and does not return a command not found error
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Verify shell restriction contextDetermine if you are operating within a restricted shell environment by attempting to run privileged commands without using 'sudo' or equivalentAffected if You are in a restricted shell environment and can access the secryptocfg command
A system is affected if it runs Fabric OS version 7.4.2 through 7.4.2c, 8.0.2 through 8.0.2e, 8.1.2 through 8.1.2e, or 8.2.0 through 8.2.0 and the secryptocfg command is accessible from the restricted shell.
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 data7.4.2d8.0.2f8.1.2f
Upgrade Brocade Fabric OS to version 8.2.1, 8.1.2f, 8.0.2f, 7.4.2d or later to patch the secryptocfg command vulnerability and prevent restricted shell escape and root privilege escalation.
- Consultation2.0 h
- Implementation4.0 h
- Testing2.0 h
- Review / QA1.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2018-6435 — 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-2018-6435 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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