CVE-2016-6177
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 Huawei OceanStor 5800 V300R003C00 has an integer overflow vulnerability. An authenticated attacker may send massive abnormal Network File System (NFS) packets, causing an anomaly in specific disk arrays.
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 confidenceAn integer overflow vulnerability exists in the NFS packet processing component of Huawei OceanStor 5800 V3 storage systems (V300R003C00). An authenticated attacker can trigger the overflow by sending specially crafted large NFS packets, causing the storage array to enter an anomalous state.
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= v300r003c00CVSS 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
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
CVSS:3.0/AV:N/AC:L/PR:L/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 the storage system modelAccess the OceanStor management interface or run 'show system' command to confirm the device is OceanStor 5800 V3Affected if Model is OceanStor 5800 V3
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Check installed firmware versionRun 'show version' or access Device Manager > Settings > System Settings > About Device to view the firmware versionAffected if Firmware version equals v300r003c00 exactly
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Verify NFS service is enabledCheck Device Manager > Protocol Configuration > NFS or run 'show nfs status' command to confirm NFS service is activeAffected if NFS service is enabled and running on the storage array
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Confirm NFS is exposed to untrusted networksReview NFS export configurations and network access control lists to determine if NFS shares are accessible from outside trusted IP rangesAffected if NFS is accessible from networks outside the trusted IP address range
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Audit NFS user accountsCheck the list of users with NFS privileges in Device Manager > User Management to identify authenticated attackers who could exploit this flawAffected if Multiple authenticated users have NFS access privileges
The environment is affected only if the storage system is OceanStor 5800 V3 running exactly firmware V300R003C00 with NFS service enabled and accessible to potentially malicious authenticated users.
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 dataApply the vendor-provided firmware patch from Huawei. Until patched, restrict NFS access to trusted IP addresses and limit the number of authenticated users with NFS privileges.
- Consultation4.0 h
- Implementation6.0 h
- Testing6.0 h
- Review / QA3.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $5,312.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2016-6177 — 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-2016-6177 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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