CVE-2024-33516
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 · uneditedAn unauthenticated Denial of Service (DoS) vulnerability exists in the Auth service accessed via the PAPI protocol provided by ArubaOS. Successful exploitation of this vulnerability results in the ability to interrupt the normal operation of the controller.
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 confidenceAn unauthenticated attacker can send specially crafted packets to the Auth service via the PAPI ( Aruba's proprietary protocol) in ArubaOS, causing a Denial of Service condition that disrupts normal controller operation without requiring valid credentials.
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>= 8.10.0.0, <= 8.10.0.10>= 8.11.0.0, <= 8.11.2.1>= 10.4.0.0, <= 10.4.1.0>= 10.5.0.0, <= 10.5.1.0CVSS 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
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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 the installed ArubaOS versionRun 'show version' on the Aruba controller CLI or check via WebUI under Monitoring > Controllers > Controller VersionAffected if The version falls within 8.10.0.0-8.10.0.10, 8.11.0.0-8.11.2.1, 10.4.0.0-10.4.1.0, or 10.5.0.0-10.5.1.0
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Verify PAPI service is runningRun 'show ip interface brief' or 'show controller-ip' to identify management interfaces, then check if PAPI UDP port 8211 is listening with 'show ip udp' or by examining the Auth service configurationAffected if PAPI service (UDP 8211) is active and listening on management or control-plane interfaces
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Assess network exposure of UDP port 8211Review firewall rules, ACLs, or interface configurations to determine if UDP port 8211 is accessible from untrusted networks or the internet. Use 'show acl' and check interface security policies.Affected if UDP port 8211 is exposed to untrusted or external networks without proper filtering
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Check for recent authentication or availability anomaliesReview controller logs using 'show log system' or 'show log authentication' for unusual patterns, failed connection attempts, or service disruptions around the Auth/PAPI serviceAffected if Unexpected auth failures or controller restarts are logged without corresponding legitimate activity
You are affected if your controller runs an ArubaOS version within the affected ranges AND the PAPI service (UDP 8211) is accessible from untrusted networks.
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 · scopedApply vendor-supplied patches for ArubaOS; until then, restrict network access to the PAPI port (UDP 8211) from untrusted networks using ACLs or firewall rules to limit exposure to unauthenticated attackers.
Upgrade to the next minor release beyond your current branch: 8.10.0.11+, 8.11.3.0+, 10.4.1.1+, or 10.5.1.1+
- 1. Identify the current ArubaOS version by running 'show version' on the controller
- 2. Determine which version branch your current release falls into (8.10.x, 8.11.x, 10.4.x, or 10.5.x)
- 3. For 8.10.x branch: upgrade to 8.10.0.11 or later
- 4. For 8.11.x branch: upgrade to 8.11.3.0 or later
- 5. For 10.4.x branch: upgrade to 10.4.1.1 or later
- 6. For 10.5.x branch: upgrade to 10.5.1.1 or later
- 7. Download the appropriate upgrade image from the Aruba support portal (https://asp.arubanetworks.com)
- 8. Follow standard ArubaOS upgrade procedures: upload the image, reboot the controller, and verify the new version
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation2.0 h
- Implementation3.0 h
- Testing4.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2024-33516 — 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-2024-33516 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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- Version or environment caveats, and links to real fixes
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