Big Ip Access Policy ManagerApplication · F5

CVE-2019-6678

MEDIUM · 5.3 CVSS v3.1 Published 2019-12-23
Fix available
A fix is available. Upgrade to 13.1.3.2 / 14.0.1.1 or later.
See remediation →
62/100
Remediation priority · Elevated
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 BIG-IP versions 15.0.0-15.0.1, 14.1.0-14.1.2.2, 14.0.0-14.0.1, and 13.1.0-13.1.3.1, the TMM process may restart when the packet filter feature is enabled.

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 F5 BIG-IP versions 15.0.0-15.0.1, 14.1.0-14.1.2.2, 14.0.0-14.0.1, and 13.1.0-13.1.3.1, the TMM (Traffic Management Microkernel) process may restart when the packet filter feature is enabled, causing a denial of service condition.

MitigationIf packet filter is not required, disable the packet filter feature. Otherwise, upgrade to a patched BIG-IP version that resolves this issue.

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:>= 13.1.0, < 13.1.3.2>= 14.0.0, < 14.0.1.1>= 14.1.0, < 14.1.2.3>= 15.0.0, < 15.0.1.1
Big Ip Advanced Firewall ManagerApplication
Affected:>= 13.1.0, < 13.1.3.2>= 14.0.0, < 14.0.1.1>= 14.1.0, < 14.1.2.3>= 15.0.0, < 15.0.1.1
Big Ip AnalyticsApplication
Affected:>= 13.1.0, < 13.1.3.2>= 14.0.0, < 14.0.1.1>= 14.1.0, < 14.1.2.3>= 15.0.0, < 15.0.1.1
Big Ip Application Acceleration ManagerApplication
Affected:>= 13.1.0, < 13.1.3.2>= 14.0.0, < 14.0.1.1>= 14.1.0, < 14.1.2.3>= 15.0.0, < 15.0.1.1
Big Ip Application Security ManagerApplication
Affected:>= 13.1.0, < 13.1.3.2>= 14.0.0, < 14.0.1.1>= 14.1.0, < 14.1.2.3>= 15.0.0, < 15.0.1.1
Big Ip Domain Name SystemApplication
Affected:>= 13.1.0, < 13.1.3.2>= 14.0.0, < 14.0.1.1>= 14.1.0, < 14.1.2.3>= 15.0.0, < 15.0.1.1
Big Ip Edge GatewayWeb browser
Affected:>= 13.1.0, < 13.1.3.2>= 14.0.0, < 14.0.1.1>= 14.1.0, < 14.1.2.3>= 15.0.0, < 15.0.1.1
Big Ip Fraud Protection ServiceApplication
Affected:>= 13.1.0, < 13.1.3.2>= 14.0.0, < 14.0.1.1>= 14.1.0, < 14.1.2.3>= 15.0.0, < 15.0.1.1

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
None
Integrity
None
Availability
Low

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

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 installed BIG-IP version
    Run `tmsh show /sys version` or check the BIG-IP GUI under Dashboard > System > Software Version
    Affected if The version falls within 13.1.0-13.1.3.1, 14.0.0-14.0.1, 14.1.0-14.1.2.2, or 15.0.0-15.0.1
  2. Confirm the affected module is in use
    Check which BIG-IP modules (APM, AFM, Analytics, AAM, ASM, DNS, Edge Gateway, or Fraud Protection Service) are licensed and active on the system using `tmsh show /sys license`
    Affected if Any of the listed modules are provisioned and active on a vulnerable version

You are affected if your BIG-IP version is within the vulnerable ranges AND the packet filter feature is enabled, causing TMM to be at risk of restart and denial of service.

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 13.1.3.2 / 14.0.1.1 / 14.1.2.3 or later
Fixed in 13.1.3.214.0.1.114.1.2.3
Interim mitigation

If packet filter is not required, disable the packet filter feature. Otherwise, upgrade to a patched BIG-IP version that resolves this issue.

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

Free · runs locally
dbcve dependency scanner

Check whether your project pulls in CVE-2019-6678 — 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 sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2019-6678 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
  • 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