CVE-2018-11749

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.

Published: 2018-08-24 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2018-11749 is rated Moderate Risk (57.4/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 0.76%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2018-11749

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.15% 0.76% +0.61%
2 2026-03-10 0.22% 0.15% -0.08%
3 2023-03-07 — 0.22% —

Full EPSS history (5 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2018-11749

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.8 3.0 CRITICAL
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 5.9 [email protected]
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:P/I:N/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:N)
No availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2018-11749

OS Trackers for CVE-2018-11749

vendor priority summary link
debian unimportant CVE-2018-11749 unimportant priority: Debian including 1 source packages (puppet), 1 status rows across 1 suites (bullseye): resolved 1. https://security-tracker.debian.org/tracker/CVE-2018-11749
ubuntu medium CVE-2018-11749 medium priority: Ubuntu including 1 source packages (puppet), 4 status rows across 4 suites (bionic, trusty, upstream, xenial): not-affected 4. https://ubuntu.com/security/CVE-2018-11749

Affected software / configurations for CVE-2018-11749

Vendor Product Version Raw CPE
puppet puppet_enterprise <= 2016.4.14 cpe:2.3:a:puppet:puppet_enterprise:*:*:*:*:*:*:*:*
puppet puppet_enterprise >= 2017.3.0, <= 2017.3.9 cpe:2.3:a:puppet:puppet_enterprise:*:*:*:*:*:*:*:*
puppet puppet_enterprise >= 2018.1.0, <= 2018.1.3 cpe:2.3:a:puppet:puppet_enterprise:*:*:*:*:*:*:*:*

References for CVE-2018-11749

cvelogic Threat Intelligence