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Clearpass Policy ManagerApplication · Arubanetworks

CVE-2021-40991

HIGH · 7.2 CVSS v3.1 Published 2021-10-15
Fix available
A fix is available. Upgrade to 6.8.9 / 6.9.7 or later.
See remediation →
78/100
Remediation priority · High
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
A remote disclosure of sensitive information vulnerability was discovered in Aruba ClearPass Policy Manager version(s): ClearPass Policy Manager 6.10.x prior to 6.10.2 - - ClearPass Policy Manager 6.9.x prior to 6.9.7-HF1 - - ClearPass Policy Manager 6.8.x prior to 6.8.9-HF1. Aruba has released patches for ClearPass Policy Manager that address this security vulnerability.

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 confidence

A remote sensitive information disclosure vulnerability in Aruba ClearPass Policy Manager allows unauthorized remote attackers to access sensitive data. The vulnerability affects versions 6.10.x before 6.10.2, 6.9.x before 6.9.7-HF1, and 6.8.x before 6.8.9-HF1.

MitigationApply the available vendor patches (6.10.2, 6.9.7-HF1, or 6.8.9-HF1) to all affected ClearPass Policy Manager deployments to remediate this vulnerability.

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
Clearpass Policy ManagerApplication
Affected:>= 6.8.0, < 6.8.9>= 6.9.0, < 6.9.7>= 6.10.0, < 6.10.2= 6.8.9= 6.9.7

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
High
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:H/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. Identify ClearPass Policy Manager version
    Log into the ClearPass admin UI and navigate to Administration > About, or run the CLI command 'show version' to retrieve the installed software version.
    Affected if The displayed version falls within any of these ranges: 6.8.0 through 6.8.9 (including 6.8.9), 6.9.0 through 6.9.7 (including 6.9.7), or 6.10.0 through 6.10.1.
  2. Confirm version is unpatched
    Check if the installed version is exactly 6.10.2, 6.9.7-HF1, or 6.8.9-HF1. If it is any version before these patch levels, the system is potentially affected.
    Affected if The installed version is earlier than 6.10.2, 6.9.7-HF1, or 6.8.9-HF1, or matches the exact vulnerable versions 6.8.9 or 6.9.7.
  3. Determine network exposure of ClearPass
    Review network configuration to determine if the ClearPass Policy Manager web interface (HTTPS port 443) or API endpoints are accessible from untrusted networks or the internet.
    Affected if The ClearPass admin interface or API is reachable from networks outside the trusted internal environment.

A system is affected if it runs ClearPass Policy Manager version 6.8.x before 6.8.9-HF1, 6.9.x before 6.9.7-HF1, or 6.10.x before 6.10.2, and is network-accessible to unauthorized parties.

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
Upgrade available Upgrade to 6.8.9 / 6.9.7 / 6.10.2 or later
Fixed in 6.8.96.9.76.10.2
Interim mitigation

Apply the available vendor patches (6.10.2, 6.9.7-HF1, or 6.8.9-HF1) to all affected ClearPass Policy Manager deployments to remediate this vulnerability.

Recommended fix High confidence

6.8.9-HF1 (for 6.8.x branch), 6.9.7-HF1 (for 6.9.x branch), or 6.10.2 (for 6.10.x branch)

  1. 1. Identify the current ClearPass Policy Manager version by checking the admin UI or command line
  2. 2. For version 6.8.x: Upgrade to ClearPass Policy Manager 6.8.9-HF1 or later
  3. 3. For version 6.9.x: Upgrade to ClearPass Policy Manager 6.9.7-HF1 or later
  4. 4. For version 6.10.x: Upgrade to ClearPass Policy Manager 6.10.2 or later
  5. 5. After upgrade, verify the ClearPass services are running correctly
  6. 6. Confirm the vulnerability is resolved by checking the version in the admin UI
Caveat Review Aruba upgrade documentation for any migration considerations; minor version upgrades typically have minimal disruption

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

Fix this in Clearpass Policy Manager Scoped from the published advisory
  • Consultation3.0 h
  • Implementation4.0 h
  • Testing3.0 h
  • Review / QA2.0 h
12.0 hours of engineering $2,130
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $3,408.

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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-2021-40991 in production — separate from our analysis above.

No notes yet

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What this is

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.

What belongs here
  • 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