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Big Ip Access Policy ManagerApplication · F5

CVE-2018-5544

HIGH · 7.5 CVSS v3.0 Published 2018-07-31
Fix available
A fix is available. Upgrade to after 13.1.1 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
When the F5 BIG-IP APM 13.0.0-13.1.1 or 12.1.0-12.1.3 renders certain pages (pages with a logon agent or a confirm box), the BIG-IP APM may disclose configuration information such as partition and agent names via URI parameters.

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

F5 BIG-IP APM versions 12.1.0-12.1.3 and 13.0.0-13.1.1 contain an information disclosure vulnerability where certain pages (those with a logon agent or confirm box) leak configuration information including partition names and agent names via URI parameters when rendered.

MitigationUpgrade F5 BIG-IP APM to a version beyond 13.1.1 (for 13.x) or 12.1.3 (for 12.x) where the vulnerability has been patched.

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:>= 12.1.0, <= 12.1.3>= 13.0.0, <= 13.1.1

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
None
Availability
None

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/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 checks

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

  1. Verify APM module is provisioned
    Run `tmsh list /sys provision` and check if 'apm' is set to a non-zero value (such as 'nominal' or a dedicated value)
    Affected if APM is provisioned and running
  2. Determine installed BIG-IP version
    Run `tmsh show /sys version` or check the version via the web interface (System > Software Management > ISO Image)
    Affected if The version falls within 12.1.0-12.1.3 or 13.0.0-13.1.1
  3. Identify Access Policies with logon agents
    Run `tmsh list /apm policy access-policy` and examine the output for 'logon' agent objects within access policies
    Affected if Any access policy contains a logon agent configuration
  4. Identify Access Policies with confirm boxes
    Run `tmsh list /apm policy access-policy` and examine the output for 'confirm-box' agent objects within access policies
    Affected if Any access policy contains a confirm-box agent configuration

A user is affected if their BIG-IP APM version is between 12.1.0-12.1.3 or 13.0.0-13.1.1 AND they have Access Policies configured with either logon agents or confirm boxes that could expose partition and agent names via URI parameters.

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.

From vendor data
Upgrade available Upgrade to a release after 13.1.1
Interim mitigation

Upgrade F5 BIG-IP APM to a version beyond 13.1.1 (for 13.x) or 12.1.3 (for 12.x) where the vulnerability has been patched.

Fix this in Big Ip Access Policy Manager Scoped from the published advisory
  • Consultation2.0 h
  • Implementation3.0 h
  • Testing2.0 h
  • Review / QA1.0 h
8.0 hours of engineering $1,420
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,272.

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-2018-5544 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