CVE intelligence and bounded remediation

CVE-2020-10112 — Citrix Gateway 11.1, 12.0, and 12.1 allows Cache Poisoning

Medium CVSS 5.8

Citrix Gateway 11.1, 12.0, and 12.1 allows Cache Poisoning. NOTE: Citrix disputes this as not a vulnerability. By default, Citrix ADC only caches static content served under certain URL paths for Citrix Gateway usage. No dynamic content is served under these paths, which implies that those cached pages would not change based on parameter values. All other data traffic going through Citrix Gateway are NOT cached by default

Severity
Medium
CVSS
5.8 (2.0)
Published
2020-03-06
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-444

Affected products

  • citrix / gateway_firmware / 11.1
  • citrix / gateway_firmware / 12.0
  • citrix / gateway_firmware / 12.1

Matched remediation archetype

HTTP request smuggling and message-boundary ambiguity

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Check exposure

  • Inventory every proxy, CDN, gateway, load balancer, service mesh, and application server hop on affected request paths.
  • Compare documented parsing and normalization behavior for message length, transfer coding, duplicate headers, and protocol translation.
  • Identify connection reuse and which downstream services trust headers added by intermediaries.

Remediate safely

  • Update affected intermediaries and origin servers and align them on a single standards-compliant request framing policy.
  • Reject ambiguous length, transfer-coding, duplicate, malformed, and unsupported framing before forwarding.
  • Normalize or remove hop-by-hop and identity headers at one controlled boundary and add multi-hop regression tests.

Authoritative sources

Complete CVE record and remediation plan

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