CVE-2019-16205
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 Brocade SANnav versions before v2.0, could allow remote attackers to brute-force a valid session ID. The vulnerability is due to an insufficiently random session ID for several post-authentication actions in the SANnav portal.
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 confidenceBrocade SANnav versions before v2.0 generate session IDs with insufficient randomness, allowing remote attackers to brute-force valid session IDs and hijack authenticated user sessions. The vulnerability affects post-authentication actions in the SANnav web portal due to predictable session token generation.
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< 2.0CVSS 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
- Required
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/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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Confirm SANnav installationCheck if the Brocade SANnav web portal is accessible in your environment by accessing the login page via HTTPS on port 8443 or 443, or check running processes for SANnav services.Affected if SANnav is running and accessible on the network
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Identify SANnav versionLog into the SANnav web interface and navigate to the About or Help section to view the installed version number. Alternatively, check the installation directory for version files or use the command-line interface if available.Affected if The displayed version is below 2.0 (e.g., 1.x.x or 1.x) - note that any version less than 2.0 is affected
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Verify session token behaviorIf you have access, inspect session cookies or tokens after authentication. The affected versions use predictable session ID generation that may show patterns in session identifiers.Affected if Session IDs appear to have low randomness, sequential patterns, or predictable structures
Your environment is affected if SANnav is installed and the running version is any release prior to version 2.0.
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 data2.0
Upgrade SANnav to version 2.0 or later to obtain the patched session management code with cryptographically random session IDs.
- Consultation4.0 h
- Implementation12.0 h
- Testing8.0 h
- Review / QA4.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $7,808.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2019-16205 — 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-2019-16205 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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