CVE-2020-5383
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 · uneditedDell EMC Isilon OneFS version 8.2.2 and Dell EMC PowerScale OneFS version 9.0.0 contains a buffer overflow vulnerability in the Likewise component. A remote unauthenticated malicious attacker may potentially exploit this vulnerability to cause a process restart.
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 confidenceBuffer overflow vulnerability in the Likewise component of Dell EMC Isilon OneFS 8.2.2 and PowerScale OneFS 9.0.0 allows remote unauthenticated attackers to potentially cause a process restart via malformed input.
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= 8.2.2= 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
- Low
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
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 OneFS product and versionRun 'isi version' or check the system management interface for the OneFS version information. Confirm whether the system is Dell EMC Isilon OneFS or PowerScale OneFS.Affected if The product is Dell EMC Isilon OneFS version 8.2.2 or PowerScale OneFS version 9.0.0 exactly.
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Verify the exact OneFS build versionRun 'isi get VERSION' or access the cluster management > About page to confirm the precise build number matches 8.2.2 or 9.0.0.Affected if The build version is exactly 8.2.2 or exactly 9.0.0.
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Confirm Likewise service is runningRun 'isi services -a | grep -i likewise' or check via the OneFS CLI with 'isi auth' commands to verify the Likewise service (AD/LDAP integration) is enabled and active.Affected if The Likewise component is enabled and running for Active Directory integration.
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Check for Likewise-related processesRun 'ps -aux | grep -i likewise' or check process monitoring for 'lwiod', 'lsassd', or other Likewise daemon processes indicating the component is active.Affected if Likewise daemon processes are running on the system.
You are affected if your system is running Dell EMC Isilon OneFS 8.2.2 or PowerScale OneFS 9.0.0 with the Likewise component enabled for AD integration.
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 vendor-supplied patches for this vulnerability or upgrade to a patched OneFS version. Given theLikewise component handles AD integration, ensure patch testing includes authentication functionality.
- Consultation2.0 h
- Implementation4.0 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-2020-5383 — 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-2020-5383 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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