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Big Ip Local Traffic ManagerApplication · F5

CVE-2017-6133

HIGH · 7.5 CVSS v3.0 Published 2017-12-21
Fix available
A fix is available. Upgrade to after 12.1.2 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
In F5 BIG-IP LTM, AAM, AFM, Analytics, APM, ASM, DNS, Link Controller, PEM and WebSafe software version 13.0.0 and 12.1.0 - 12.1.2, undisclosed HTTP requests may cause a denial of service.

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

A denial of service vulnerability in F5 BIG-IP multiple modules (LTM, AAM, AFM, Analytics, APM, ASM, DNS, Link Controller, PEM, WebSafe) versions 13.0.0 and 12.1.0-12.1.2 allows attackers to crash the affected device via specially crafted undisclosed HTTP requests.

MitigationApply F5 security patches and upgrade to a fixed version as specified in F5 SOLUTION. Consider implementing rate limiting or HTTP request filtering at upstream devices as a temporary mitigation until patching is feasible.

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 Local Traffic ManagerApplication
Affected:>= 12.1.0, <= 12.1.2= 13.0.0
Big Ip Application Acceleration ManagerApplication
Affected:>= 12.1.0, <= 12.1.2= 13.0.0
Big Ip Advanced Firewall ManagerApplication
Affected:>= 12.1.0, <= 12.1.2= 13.0.0
Big Ip AnalyticsApplication
Affected:>= 12.1.0, <= 12.1.2= 13.0.0
Big Ip Access Policy ManagerApplication
Affected:>= 12.1.0, <= 12.1.2= 13.0.0
Big Ip Application Security ManagerApplication
Affected:>= 12.1.0, <= 12.1.2= 13.0.0
Big Ip DnsApplication
Affected:>= 12.1.0, <= 12.1.2= 13.0.0
Big Ip Link ControllerApplication
Affected:>= 12.1.0, <= 12.1.2= 13.0.0

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:3.0/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 installed BIG-IP modules
    Determine which BIG-IP modules (LTM, AAM, AFM, Analytics, APM, ASM, DNS, Link Controller, PEM, WebSafe) are licensed and running on the device
    Affected if Any of these modules are present and the version is in the affected range
  2. Retrieve the BIG-IP version
    Use the F5 management interface or command line to obtain the installed BIG-IP version number
    Affected if Version equals 13.0.0 or falls within the 12.1.0 to 12.1.2 range inclusive
  3. Confirm HTTP traffic handling
    Verify that the affected module is configured to accept and process incoming HTTP requests
    Affected if The module is actively handling HTTP traffic on a version that matches the affected ranges

The environment is affected if BIG-IP is running version 13.0.0 or any version from 12.1.0 through 12.1.2 with any of the vulnerable modules (LTM, AAM, AFM, Analytics, APM, ASM, DNS, Link Controller) enabled and exposed to HTTP requests.

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 12.1.2
Interim mitigation

Apply F5 security patches and upgrade to a fixed version as specified in F5 SOLUTION. Consider implementing rate limiting or HTTP request filtering at upstream devices as a temporary mitigation until patching is feasible.

Fix this in Big Ip Local Traffic Manager Scoped from the published advisory
  • Consultation4.0 h
  • Implementation8.0 h
  • Testing4.0 h
  • Review / QA2.0 h
18.0 hours of engineering $3,200
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $5,120.

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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-2017-6133 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