CVE-2019-11454

Publication date 22 April 2019

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

Persistent cross-site scripting (XSS) in http/cervlet.c in Tildeslash Monit before 5.25.3 allows a remote unauthenticated attacker to introduce arbitrary JavaScript via manipulation of an unsanitized user field of the Authorization header for HTTP Basic Authentication, which is mishandled during an _viewlog operation.

From the Ubuntu Security Team

Zack Flack discovered that Monit incorrectly handled certain input. A remote authenticated user could exploit this to conduct cross-site scripting (XSS) attacks.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
monit	23.04 lunar	Not affected
	22.10 kinetic	Not affected
	22.04 LTS jammy	Not affected
	21.10 impish	Not affected
	21.04 hirsute	Not affected
	20.10 groovy	Not affected
	20.04 LTS focal	Not affected
	19.10 eoan	Ignored end of life
	19.04 disco	Fixed 1:5.25.2-3ubuntu0.1
	18.10 cosmic	Fixed 1:5.25.2-1ubuntu0.1
	18.04 LTS bionic	Fixed 1:5.25.1-1ubuntu0.1~esm1
	16.04 LTS xenial	Fixed 1:5.16-2ubuntu0.2+esm1
	14.04 LTS trusty	Fixed 1:5.6-2ubuntu0.1+esm2

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Severity score breakdown

Parameter	Value
Base score	6.1 · Medium
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	Required
Scope	Changed
Confidentiality	Low
Integrity impact	Low
Availability impact	None
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N