CVE-2021-20341
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 · uneditedIBM Cloud Pak for Multicloud Management Monitoring 2.2 returns potentially sensitive information in headers which could lead to further attacks against the system. IBM X-Force ID: 194513.
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 confidenceIBM Cloud Pak for Multicloud Management Monitoring 2.2 returns potentially sensitive information in HTTP response headers. This information disclosure could reveal internal system details, version information, or other metadata that may aid attackers in reconnaissance and planning further attacks against the 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< 2.2.6CVSS 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
- Low
- Integrity
- None
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
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 installed version of IBM Cloud Pak for Multicloud Management MonitoringAccess the product administration console or use the ibmcloud cp console command to view the installed version. Alternatively, check the operator deployment status using kubectl get deployments -n ibm-cloud-pak.Affected if The installed version is lower than 2.2.6.
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Send an HTTP request to the management interfaceUse a tool like curl -I https://<your-cpmm-host> to retrieve HTTP response headers from the main application URL.Affected if The response headers contain sensitive information such as internal server names, version numbers, or framework details.
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Inspect response headers for sensitive headersExamine the headers for fields such as Server, X-Powered-By, X-Generator, or any custom headers that reveal internal path information or system architecture.Affected if Any of these headers are present and expose internal system details, version information, or metadata.
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Test multiple endpoints for header leakageSend HEAD or GET requests to various application endpoints and compare the response headers across all URLs.Affected if Different endpoints return inconsistent or additional headers that reveal version or internal details.
A user is affected if the installed version is below 2.2.6 AND HTTP response headers from the application reveal sensitive system information such as server names, version numbers, or framework details.
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 data2.2.6
Configure the web server or reverse proxy to remove or obscure sensitive headers (such as Server, X-Powered-By, X-Generator, or internal path headers) before returning HTTP responses to clients. Apply these changes across all endpoints and validate with a header inspection tool.
- Consultation2.0 h
- Implementation4.0 h
- Testing2.0 h
- Review / QA1.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2021-20341 — 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-2021-20341 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
- No spam, self-promotion, credentials, or personal data