---
title: "CVE-2018-11749\n    | Ubuntu"
description: Ubuntu is an open source software operating system that runs from the
  desktop, to the cloud, to all your internet connected things.
url: https://ubuntu.com/security/CVE-2018-11749?format=md
keywords: index, follow
---

# CVE-2018-11749

Publication date 24 August 2018

Last updated 25 August 2025

---

Ubuntu priority

**Medium**

[Why this priority?](https://ubuntu.com/security/cves/about#priority )

## Cvss 3 Severity Score

**9.8 · Critical**

[Score breakdown](https://ubuntu.com/security/CVE-2018-11749?format=md#impact-score)

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## Description

When users are configured to use startTLS with RBAC LDAP, at login time,
the user's credentials are sent via plaintext to the LDAP server. This
affects Puppet Enterprise 2018.1.3, 2017.3.9, and 2016.4.14, and is fixed
in Puppet Enterprise 2018.1.4, 2017.3.10, and 2016.4.15. It scored an 8.5
CVSS score.

[Read the notes from the security team](https://ubuntu.com/security/CVE-2018-11749?format=md#notes)

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| puppet | 18.04 LTS bionic | Not affected |
| 16.04 LTS xenial | Not affected |
| 14.04 LTS trusty | Not affected |

---

* [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)
* [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses)

## Notes

---

### [leosilva](https://launchpad.net/~leosilva)

from debian puppet <not-affected> (RBAC is specific to Puppet Enterprise)

## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

9.8 · Critical

* Base metrics

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

  | Parameter | Value |
  | --- | --- |
  | Base score | 9.8 · Critical |
  | Exploitability score | - |
  | Impact score | - |

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

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-11749)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2018-11749)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2018-11749)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2018-11749)

### Other references

* <https://puppet.com/security/cve/cve-2018-11749>
* <https://www.cve.org/CVERecord?id=CVE-2018-11749>