CVE-2019-0816

Publication date 9 April 2019

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

A security feature bypass exists in Azure SSH Keypairs, due to a change in the provisioning logic for some Linux images that use cloud-init, aka 'Azure SSH Keypairs Security Feature Bypass Vulnerability'.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
cloud-init	18.10 cosmic	Fixed 18.5-45-g3554ffe8-0ubuntu1~18.10.1
	18.04 LTS bionic	Fixed 18.5-45-g3554ffe8-0ubuntu1~18.04.1
	16.04 LTS xenial	Fixed 18.5-45-g3554ffe8-0ubuntu1~16.04.1
	14.04 LTS trusty	Not in release

Patch details

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

Package	Patch details
cloud-init	Upstream: https://code.launchpad.net/~jasonzio/cloud-init/+git/cloud-init/+merge/363445

Severity score breakdown

CVSS version: CVSS v3.0

Base score 5.1 · Medium

Base metrics

Parameter	Value
Attack vector	Local
Attack complexity	High
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality impact	None
Integrity impact	High
Availability impact	None

Scores

Parameter	Value
Base score	5.1 · Medium
Exploitability score	-
Impact score	-

Vector: CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N