CVE intelligence and bounded remediation

CVE-2019-6593 — F5 Big-Ip Access Policy Manager security vulnerability

Medium CVSS 5.9

On BIG-IP 11.5.1-11.5.4, 11.6.1, and 12.1.0, a virtual server configured with a Client SSL profile may be vulnerable to a chosen ciphertext attack against CBC ciphers. When exploited, this may result in plaintext recovery of encrypted messages through a man-in-the-middle (MITM) attack, despite the attacker not having gained access to the server's private key itself. (CVE-2019-6593 also known as Zombie POODLE and GOLDENDOODLE.)

Severity
Medium
CVSS
5.9 (3.0)
Published
2019-02-26
CISA KEV
Not currently listed
Ecosystem
software/application
Weaknesses
CWE-327

Affected products

  • f5 / big-ip_access_policy_manager
  • f5 / big-ip_access_policy_manager / 11.6.1
  • f5 / big-ip_access_policy_manager / 12.1.0
  • f5 / big-ip_local_traffic_manager
  • f5 / big-ip_local_traffic_manager / 11.6.1
  • f5 / big-ip_local_traffic_manager / 12.1.0

Showing 6 representative product identities from 39 source matches. Confirm exact affected versions with the linked vendor and NVD evidence.

Matched remediation archetype

Cryptography, certificate, signature, and channel validation

This catalog composition supplies bounded fallback guidance. Explicitly reviewed curated workflows load with the complete record below.

Check exposure

  • Inventory affected algorithms, key uses, trust stores, certificate validation settings, random sources, and plaintext channels across clients and services.
  • Determine which secrets, identities, signatures, or data protections depend on the affected primitive or validation path.
  • Check debug, compatibility, fallback, and hostname or audience override settings in build and runtime configuration.

Remediate safely

  • Use a maintained platform cryptographic API with approved algorithms, modes, parameters, randomness, and full peer identity validation.
  • Remove insecure fallback and validation bypasses; separate keys by purpose and load them from managed secret storage.
  • Plan rotation or reissuance for affected keys, certificates, tokens, hashes, or ciphertext and document compatibility sequencing.

Authoritative sources

Complete CVE record and remediation plan

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