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ArubaosOperating system · Hp

CVE-2023-22781

CRITICAL · 9.8 CVSS v3.1 Published 2023-05-08
Fix available
A fix is available. Upgrade to 8.6.0.0 or later.
See remediation →
100/100
Remediation priority · Urgent
Remotely reachable No privileges 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
There are buffer overflow vulnerabilities in multiple underlying services that could lead to unauthenticated remote code execution by sending specially crafted packets destined to the PAPI (Aruba's access point management protocol) UDP port (8211). Successful exploitation of these vulnerabilities result in the ability to execute arbitrary code as a privileged user on the underlying operating 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 · moderate confidence

Multiple buffer overflow vulnerabilities exist in the PAPI (Aruba Access Point Management Protocol) service listening on UDP port 8211. By sending specially crafted packets to this unauthenticated service, an attacker can trigger the buffer overflow and achieve remote code execution as a privileged user on the underlying operating system.

MitigationRestrict network access to UDP port 8211 to trusted sources only (e.g., within the management network segment) and apply vendor-provided security patches from Aruba when available.

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
ArubaosOperating system
Affected:>= 10.3.0.0, <= 10.3.1.0
InstantosOperating system
Affected:>= 6.4.0.0, <= 6.4.4.8-4.2.4.20>= 6.5.0.0, <= 6.5.4.23>= 8.4.0.0, < 8.6.0.0>= 8.6.0.0, <= 8.6.0.19>= 8.7.0.0, <= 8.9.0.0>= 8.10.0.0, <= 8.10.0.4

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
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 checks

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

  1. Identify the device as an Aruba access point or controller
    Run 'show version' on the Aruba CLI or check the device model via 'show system information' or 'show inventory'. Look for Aruba or HP Aruba in the product name.
    Affected if The device is an Aruba AP or controller running ArubaOS or InstantOS.
  2. Confirm UDP port 8211 is open and listening
    Run 'show ip http-server' or 'show papi status' on the Aruba CLI to verify the PAPI service is enabled and listening on UDP port 8211. Alternatively, use 'netstat -an | grep 8211' or 'nmap -sU -p 8211 <device_ip>' from a management station.
    Affected if UDP port 8211 is open and the PAPI service is active.
  3. Retrieve the exact ArubaOS or InstantOS version
    Execute 'show version' on the Aruba CLI. Note the full version string (for example, 8.10.0.4 or 10.3.1.0).
    Affected if The device is running ArubaOS or InstantOS.
  4. Compare the installed version against affected ranges
    Match the version from step 3 against: ArubaOS 10.3.0.0 to 10.3.1.0; InstantOS 6.4.0.0 to 6.4.4.8-4.2.4.20, 6.5.0.0 to 6.5.4.23, 8.4.0.0 to <8.6.0.0, 8.6.0.0 to 8.6.0.19, 8.7.0.0 to 8.9.0.0, or 8.10.0.0 to 8.10.0.4.
    Affected if The installed version falls within any of the listed affected ranges.

The environment is affected if the device is an Aruba AP or controller running ArubaOS or InstantOS with UDP port 8211 open and a version matching the affected ranges.

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 8.6.0.0 or later
Fixed in 8.6.0.0
Interim mitigation

Restrict network access to UDP port 8211 to trusted sources only (e.g., within the management network segment) and apply vendor-provided security patches from Aruba when available.

Recommended fix Moderate confidence

ArubaOS 10.3.2.0+ and InstantOS 6.4.4.8-4.2.4.21+/6.5.4.24+/8.6.0.20+ (latest stable releases)

  1. 1. Identify all ArubaOS and InstantOS devices in the environment matching the affected version ranges.
  2. 2. Block or restrict access to UDP port 8211 (PAPI protocol) at network perimeter to prevent unauthenticated exploitation from untrusted networks.
  3. 3. For ArubaOS devices (versions 10.3.0.0 to 10.3.1.0): Upgrade to ArubaOS version 10.3.2.0 or later.
  4. 4. For InstantOS devices: Upgrade to the latest stable InstantOS release that supersedes the affected versions - for 6.4.x branch use 6.4.4.8-4.2.4.21 or later, for 6.5.x use 6.5.4.24 or later, for 8.4.x/8.6.x use 8.6.0.20 or later.
  5. 5. After upgrade, verify the PAPI service is running with updated software and apply any post-upgrade hardening recommendations from Aruba documentation.
  6. 6. Monitor Aruba security advisories for any additional patches or updates.
Caveat Review Aruba upgrade documentation for migration considerations; ensure controller compatibility with AP models before upgrading.

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

Fix this in Arubaos 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
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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-2023-22781 in production — separate from our analysis above.

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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
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  • Version or environment caveats, and links to real fixes
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