CVE intelligence and bounded remediation

CVE-2019-6485 — Citrix Netscaler Gateway Firmware security vulnerability

Medium CVSS 5.9

Citrix NetScaler Gateway 12.1 before build 50.31, 12.0 before build 60.9, 11.1 before build 60.14, 11.0 before build 72.17, and 10.5 before build 69.5 and Application Delivery Controller (ADC) 12.1 before build 50.31, 12.0 before build 60.9, 11.1 before build 60.14, 11.0 before build 72.17, and 10.5 before build 69.5 allow remote attackers to obtain sensitive plaintext information because of a TLS Padding Oracle Vulnerability when CBC-based cipher suites are enabled.

Severity
Medium
CVSS
5.9 (3.0)
Published
2019-02-22
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-327

Affected products

  • citrix / netscaler_gateway_firmware / 10.5
  • citrix / netscaler_gateway_firmware / 11.0
  • citrix / netscaler_gateway_firmware / 11.1
  • citrix / netscaler_gateway_firmware / 12.0
  • citrix / netscaler_gateway_firmware / 12.1
  • citrix / netscaler_application_delivery_controller_firmware / 10.5

Showing 6 representative product identities from 10 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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