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Emc Isilon OnefsApplication · Dell

CVE-2020-26180

HIGH · 8.8 CVSS v3.1 Published 2021-07-28
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
94/100
Remediation priority · Urgent
Remotely reachable Zero-click

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 · unedited
Dell EMC Isilon OneFS supported versions 8.1 and later and Dell EMC PowerScale OneFS supported version 9.0.0 contain an access issue with the remotesupport user account. A remote malicious user with low privileges may gain access to data stored on the /ifs directory through most protocols.

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 confidence

Dell EMC OneFS has an access control vulnerability where the remotesupport user account, despite being low-privilege, can access data stored in the /ifs directory through most protocols. This allows unauthorized data exposure via a privileged but misconfigured service account.

MitigationRestrict or disable the remotesupport user account's access to the /ifs directory, implement proper role-based access controls (RBAC) for the account, and review all protocol-level access permissions to enforce least-privilege principles.

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
Emc Isilon OnefsApplication
Affected:>= 8.1.0
Emc Powerscale OnefsOperating system
Affected:= 9.0.0

CVSS 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
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/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 checks

Work through these to decide whether this CVE applies to you.

  1. Verify OneFS version
    Run 'isi version' or check the OneFS web interface under Access > About to identify the installed version number
    Affected if The version is 8.1.0 or higher for Isilon, or exactly 9.0.0 for Powerscale
  2. Confirm remotesupport user exists
    Run 'isi auth users view remotesupport' or check via OneFS web interface under Access > Users & Roles > Users
    Affected if The remotesupport user account is present on the system
  3. Check remotesupport user permissions on /ifs
    Run 'isi auth users view remotesupport' and examine the associated roles, or use 'isi auth roles list' to see what permissions are assigned to the remotesupport account
    Affected if The remotesupport user has read or write access permissions mapped to /ifs or broader paths
  4. Test remotesupport access to /ifs via protocol
    Attempt to access /ifs using SMB/CIFS, NFS, or SFTP with the remotesupport credentials. For SMB, map a drive: \\hostname\ifs. For NFS, mount hostname:/ifs. For SFTP, connect with remotesupport credentials.
    Affected if The remotesupport user can successfully list, read, or write files in /ifs directory via any protocol
  5. Review protocol-level access controls
    Check OneFS access zone settings and protocol permissions under Access > Access Zones and examine SMB shares or NFS exports that may grant remotesupport access to /ifs
    Affected if Any SMB share or NFS export permits the remotesupport user access to paths within /ifs

You are affected if your OneFS version falls within 8.1.0+ (Isilon) or 9.0.0 (Powerscale) AND the remotesupport user account can access or traverse the /ifs directory through any protocol.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

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.

dbcve · scoped
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Restrict or disable the remotesupport user account's access to the /ifs directory, implement proper role-based access controls (RBAC) for the account, and review all protocol-level access permissions to enforce least-privilege principles.

Recommended fix Moderate confidence
  1. 1. Check Dell EMC OneFS security advisories at www.dell.com for CVE-2020-26180 to obtain the specific patch or hotfix.
  2. 2. Apply the Dell-provided security patch for the remotesupport user permission issue.
  3. 3. After patching, verify that the remotesupport user no longer has unauthorized access to /ifs directory data.
  4. 4. Confirm the patch was applied successfully by reviewing system permissions and access controls.

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Emc Isilon Onefs Scoped from the published advisory
  • Consultation4.0 h
  • Implementation6.0 h
  • Testing4.0 h
  • Review / QA3.0 h
17.0 hours of engineering $3,020
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2020-26180 in production — separate from our analysis above.

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What this is

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What belongs here
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  • Version or environment caveats, and links to real fixes
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