CVE-2020-2300 — Improper Authentication (empty password) in...

CRITICAL

Improper Authentication (empty password) in Jenkins Active Directory Plugin

Published May 24, 2022Updated February 16, 2024Source: osv

Summary

Jenkins Active Directory Plugin implements two separate modes: Integration with ADSI on Windows, and an OS agnostic LDAP-based mode. The Windows/ADSI mode does not specifically prohibit use of empty passwords in Active Directory Plugin prior to 2.20 and 2.16.1. If the Active Directory server allows the unauthenticated bind operation, this allows attackers to log in to Jenkins as any user by providing an empty password. Jenkins Active Directory Plugin 2.20 and 2.16.1 prohibits the use of an empty password to log in.

Advisory Timeline

First published May 24, 2022 (1602 days ago).
Last revised February 16, 2024 — 633 days after initial publication.

Remediation

Upgrade to the fixed version using your package manager.

Maven

Update org.jenkins-ci.plugins:active-directory to 2.16.1 or later

<!-- Update pom.xml dependency version to 2.16.1 for org.jenkins-ci.plugins:active-directory -->

Maven

Update org.jenkins-ci.plugins:active-directory to 2.20 or later

<!-- Update pom.xml dependency version to 2.20 for org.jenkins-ci.plugins:active-directory -->

After upgrading, run your dependency scanner again to confirm the vulnerability is resolved.

Affected Packages (2)

Affects 1 ecosystem: maven (1).

Package	Ecosystem	Affected	Fixed In
org.jenkins-ci.plugins:active-directory	maven	1.18, 1.19, 1.20, 1.21 (+44 more)	2.16.1
org.jenkins-ci.plugins:active-directory	maven	2.17, 2.18, 2.19	2.20

Vulnerability Classification

Common Weakness Enumeration (CWE) identifiers for this vulnerability type.

CWE-287
Improper AuthenticationMITRE

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 9.8 score means for each attack dimension.

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

Frequently Asked Questions

What is CVE-2020-2300?: Improper Authentication (empty password) in Jenkins Active Directory Plugin This vulnerability has been assigned a severity rating of CRITICAL (CVSS score: 9.8/10).
How do I check if my project is affected by CVE-2020-2300?: CVE-2020-2300 affects org.jenkins-ci.plugins:active-directory. Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2020-2300 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score

9.8

Exploitation is straightforward and causes maximum impact. Patch immediately.

Also Known As

GHSA-8wcw-cw2f-h4g2

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