CVE-2019-20372

Publication date 9 January 2020

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

NGINX before 1.17.7, with certain error_page configurations, allows HTTP request smuggling, as demonstrated by the ability of an attacker to read unauthorized web pages in environments where NGINX is being fronted by a load balancer.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
nginx	19.10 eoan	Fixed 1.16.1-0ubuntu2.1
	19.04 disco	Fixed 1.15.9-0ubuntu1.2
	18.04 LTS bionic	Fixed 1.14.0-0ubuntu1.7
	16.04 LTS xenial	Fixed 1.10.3-0ubuntu0.16.04.5
	14.04 LTS trusty	Fixed 1.4.6-1ubuntu3.9+esm1

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Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
nginx	Upstream: c1be55f

Severity score breakdown

Parameter	Value
Base score	5.3 · Medium
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	Low
Integrity impact	None
Availability impact	None
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N