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Big Ip Access Policy ManagerApplication · F5

CVE-2022-23011

HIGH · 7.5 CVSS v3.1 Published 2022-01-25
Fix available
A fix is available. Upgrade to 14.1.3 / 15.1.4 or later.
See remediation →
84/100
Remediation priority · High
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
On certain hardware BIG-IP platforms, in version 15.1.x before 15.1.4 and 14.1.x before 14.1.3, virtual servers may stop responding while processing TCP traffic due to an issue in the SYN Cookie Protection feature. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

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 confidence

On BIG-IP platforms running affected versions (15.1.x before 15.1.4 and 14.1.x before 14.1.3), the SYN Cookie Protection feature contains a flaw that causes virtual servers to stop responding when processing TCP traffic, resulting in a denial of service condition.

MitigationUpgrade BIG-IP to version 15.1.4/14.1.3 or later. If immediate upgrade is not feasible, consider disabling SYN Cookie Protection for affected virtual servers or implementing alternative SYN flood mitigation while planning the upgrade.

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
Big Ip Access Policy ManagerApplication
Affected:>= 14.1.0, < 14.1.3>= 15.1.0, < 15.1.4
Big Ip Advanced Firewall ManagerApplication
Affected:>= 14.1.0, < 14.1.3>= 15.1.0, < 15.1.4
Big Ip AnalyticsApplication
Affected:>= 14.1.0, < 14.1.3>= 15.1.0, < 15.1.4
Big Ip Application Acceleration ManagerApplication
Affected:>= 14.1.0, < 14.1.3>= 15.1.0, < 15.1.4
Big Ip Application Security ManagerApplication
Affected:>= 14.1.0, < 14.1.3>= 15.1.0, < 15.1.4
Big Ip Domain Name SystemApplication
Affected:>= 14.1.0, < 14.1.3>= 15.1.0, < 15.1.4
Big Ip Fraud Protection ServiceApplication
Affected:>= 14.1.0, < 14.1.3>= 15.1.0, < 15.1.4
Big Ip Global Traffic ManagerApplication
Affected:>= 14.1.0, < 14.1.3>= 15.1.0, < 15.1.4

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
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 checks

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

  1. Identify BIG-IP version
    Run 'tmsh show /sys version' or use the REST API endpoint /mgmt/shared/system/version to retrieve the installed BIG-IP software version.
    Affected if The version is 14.1.x before 14.1.3 or 15.1.x before 15.1.4
  2. List virtual servers with SYN Cookie enabled
    Run 'tmsh list /ltm virtual all-properties' and search for 'syn-cookie enabled' or use 'tmsh show /ltm virtual' to view virtual server statistics including SYN cookie status.
    Affected if Any virtual server has SYN Cookie Protection explicitly enabled
  3. Check for SYN Cookie configuration in profiles
    Run 'tmsh list /ltm profile tcp' and look for 'syn-cookie-enabled yes' within TCP profiles attached to virtual servers.
    Affected if Any TCP profile assigned to virtual servers has SYN Cookie enabled
  4. Verify virtual server status
    Run 'tmsh show /ltm virtual' and check the 'status_availability_state' field for virtual servers with SYN Cookie enabled.
    Affected if Virtual servers with SYN Cookie enabled show as 'unavailable' or 'forced_down' due to the SYN Cookie DoS condition

Your environment is affected if running BIG-IP version 14.1.0-14.1.2.x or 15.1.0-15.1.3.x AND you have virtual servers with SYN Cookie Protection enabled.

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 14.1.3 / 15.1.4 or later
Fixed in 14.1.315.1.4
Interim mitigation

Upgrade BIG-IP to version 15.1.4/14.1.3 or later. If immediate upgrade is not feasible, consider disabling SYN Cookie Protection for affected virtual servers or implementing alternative SYN flood mitigation while planning the upgrade.

Recommended fix High confidence

14.1.3+ or 15.1.4+ (any 14.1.x version >= 14.1.3, or any 15.1.x version >= 15.1.4)

  1. Identify current BIG-IP version by running 'tmsh show sys version'
  2. Schedule a maintenance window for the upgrade
  3. Download the appropriate hotfix or upgrade to version 14.1.3 or later for the 14.1.x branch, or 15.1.4 or later for the 15.1.x branch
  4. Upload the ISO image to the BIG-IP via Web UI (System > Software Management > ISO Image) or via TMSH (tmsh install sys software volume)
  5. Verify the software volume is created and healthy
  6. Reboot the BIG-IP device into the new software version
  7. After reboot, confirm the version is running and virtual servers are responding
  8. Test SYN Cookie protection functionality to verify the fix is operational

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

Fix this in Big Ip Access Policy Manager Scoped from the published advisory
  • Consultation4.0 h
  • Implementation2.0 h
  • Testing4.0 h
  • Review / QA2.0 h
12.0 hours of engineering $2,120
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $3,392.

Scan for this in your stack

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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-2022-23011 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