CVE intelligence and bounded remediation

CVE-2017-6131 — F5 Big-Ip Local Traffic Manager security vulnerability

Critical CVSS 9.8

In some circumstances, an F5 BIG-IP version 12.0.0 to 12.1.2 and 13.0.0 Azure cloud instance may contain a default administrative password which could be used to remotely log into the BIG-IP system. The impacted administrative account is the Azure instance administrative user that was created at deployment. The root and admin accounts are not vulnerable. An attacker may be able to remotely access the BIG-IP host via SSH.

Severity
Critical
CVSS
9.8 (3.0)
Published
2017-05-23
CISA KEV
Not currently listed
Ecosystem
software/application
Weaknesses
CWE-798

Affected products

  • f5 / big-ip_local_traffic_manager / 12.0.0
  • f5 / big-ip_local_traffic_manager / 12.1.0
  • f5 / big-ip_local_traffic_manager / 12.1.1
  • f5 / big-ip_local_traffic_manager / 12.1.2
  • f5 / big-ip_local_traffic_manager / 13.0.0
  • f5 / big-ip_application_acceleration_manager / 12.0.0

Showing 6 representative product identities from 45 source matches. Confirm exact affected versions with the linked vendor and NVD evidence.

Matched remediation archetype

Authentication bypass and missing authentication

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Check exposure

  • Map every affected endpoint and protocol path, including alternate ports, legacy routes, recovery flows, service accounts, and machine-to-machine access.
  • Confirm which deployments enable the affected authentication mode and whether the interface is reachable from untrusted networks.
  • Review session, token, credential, and proxy trust configuration without attempting account takeover.

Remediate safely

  • Apply the supported fix and centralize fail-closed authentication before protected request handling.
  • Remove default or embedded credentials, rotate affected secrets and sessions, and bind authentication decisions to the intended audience and channel.
  • Add negative tests for alternate routes, malformed or absent credentials, recovery flows, and proxy-derived identity.

Authoritative sources

Complete CVE record and remediation plan

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