CVE-2017-8021
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 · uneditedEMC Elastic Cloud Storage (ECS) before 3.1 is affected by an undocumented account vulnerability that could potentially be leveraged by malicious users to compromise the affected system.
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 · low confidenceEMC Elastic Cloud Storage (ECS) versions prior to 3.1 contain an undocumented/hidden account that could be exploited by malicious users to gain unauthorized access and potentially compromise the entire storage system.
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<= 3.0CVSS 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
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/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 ECS versionAccess the ECS administration console or use the ECS management API to retrieve the current installed version. Look for version information in the system settings orAbout page.Affected if The version displayed is 3.0 or earlier (any version prior to 3.1).
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Audit local user accountsReview the list of configured user accounts in the ECS system. Access the user management or authentication settings in the ECS admin interface and enumerate all accounts with access privileges.Affected if Any account is found that is not documented in the official administrator guide or was not created by your organization.
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Review authentication logs for unknown account activityExamine ECS access logs and authentication audit trails for login events. Look for successful or failed authentication attempts using accounts that are not recognized or documented.Affected if Login events or authentication attempts are found for an account your organization did not create.
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Check for hardcoded or embedded credentialsReview any configuration files, scripts, or deployment documentation that may contain embedded credentials. Inspect the ECS filesystem for files containing accounts or passwords not documented in your organization's secrets management.Affected if Credentials or accounts are discovered that are not managed by your organization's identity system.
Your environment is affected if you are running Dell Elastic Cloud Storage version 3.0 or earlier, as these versions contain the undocumented account that could allow unauthorized access.
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.
dbcve · scopedUpgrade EMC ECS to version 3.1 or later to remove the undocumented account. If immediate upgrade is not possible, review system access logs for unauthorized access using the hidden account and implement network segmentation to limit exposure.
ECS 3.1 or later
- Schedule a maintenance window for the ECS upgrade
- Back up all critical data and configuration settings according to ECS backup procedures
- Review the official EMC ECS 3.1 release notes and upgrade guide for pre-upgrade requirements
- Download the ECS 3.1 (or latest stable) upgrade package from EMC/VMware support portal
- Follow the documented in-place upgrade procedure or perform a fresh installation of ECS 3.1
- Verify the undocumented/admin account has been removed or secured during/after upgrade
- Confirm all services are running normally post-upgrade
- Validate system functionality and access controls
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 h
- Review / QA4.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2017-8021 — 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-2017-8021 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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A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- 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
- No spam, self-promotion, credentials, or personal data