Puppet Discovery up to 1.1.x WinRM Fallback credentials management

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.

A vulnerability classified as critical has been found in Puppet Discovery up to 1.1.x (Service Management Software). Affected is an unknown code block of the component WinRM. The manipulation with an unknown input leads to a credentials management vulnerability (Fallback). CWE is classifying the issue as CWE-255. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

In Puppet Discovery prior to 1.2.0, when running Discovery against Windows hosts, WinRM connections can fall back to using basic auth over insecure channels if a HTTPS server is not available. This can expose the login credentials being used by Puppet Discovery.

The bug was discovered 06/28/2018. The weakness was presented 07/03/2018 (Website). The advisory is available at puppet.com. This vulnerability is traded as CVE-2018-11746 since 06/05/2018. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1552 by the MITRE ATT&CK project.

The vulnerability was handled as a non-public zero-day exploit for at least 5 days. During that time the estimated underground price was around $0-$5k.

Upgrading to version 1.2.0 eliminates this vulnerability.

See VDB-131858 for similar entry.






  • end of life (old version)

CPE 2.3info

CPE 2.2info


VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍


VulDB Meta Base Score: 8.6
VulDB Meta Temp Score: 8.5

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CNA Base Score: 8.6
CNA Vector (Puppet): 🔍



VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍


Name: Fallback
Class: Credentials management / Fallback
CWE: CWE-255

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍


Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍


Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Puppet Discovery 1.2.0


06/05/2018 🔍
06/28/2018 +23 days 🔍
07/03/2018 +4 days 🔍
07/03/2018 +0 days 🔍
07/04/2018 +1 days 🔍
04/03/2023 +1734 days 🔍


Advisory: puppet.com
Status: Not defined
Confirmation: 🔍

CVE: CVE-2018-11746 (🔍)
See also: 🔍


Created: 07/04/2018 10:40 AM
Updated: 04/03/2023 11:00 AM
Changes: 07/04/2018 10:40 AM (60), 02/24/2020 03:52 PM (2), 04/03/2023 11:00 AM (14)
Complete: 🔍
Cache ID: 44:76C:40


No comments yet. Languages: en.

Please log in to comment.

Might our Artificial Intelligence support you?

Check our Alexa App!