CVE-2015-4100

Publication date 21 December 2017

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

Puppet Enterprise 3.7.x and 3.8.0 might allow remote authenticated users to manage certificates for arbitrary nodes by leveraging a client certificate trusted by the master, aka a "Certificate Authority Reverse Proxy Vulnerability."

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
puppet	17.10 artful	Not affected
	17.04 zesty	Not affected
	16.04 LTS xenial	Not affected
	14.04 LTS trusty	Not affected

Notes

ratliff

Upstream says "Default 'monolithic', 'split', and multimaster installs of PE 3.7.x or PE 3.8.0 are not affected. The vulnerability is resolved by default in Puppet Enterprise 3.8.1."

Severity score breakdown

CVSS version: CVSS v3.0

Base score 6.8 · Medium

Base metrics

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

Scores

Parameter	Value
Base score	6.8 · Medium
Exploitability score	-
Impact score	-

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