CVE-2020-2300: Active directory Improper Authentication (empty Password) Vulnerability
CRITICALCVE-2020-2300 is a CRITICAL (CVSS 9.8) improper authentication (empty password) vulnerability (CWE-287: Improper Authentication) affecting Active directory libraries in the Maven ecosystem. The issue involves improper authentication (empty password) in jenkins active directory plugin. Remediation is available by upgrading affected packages to version 2.20, 2.16.1.
CVE-2020-2300 at a Glance
Security Impact
CVSS: 9.8
The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).
How to Fix CVE-2020-2300
To remediate this vulnerability, upgrade all affected Active directory dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.
<dependency>
<groupId>org.jenkins-ci.plugins</groupId>
<artifactId>active-directory</artifactId>
<version>2.20</version>
</dependency><dependency>
<groupId>org.jenkins-ci.plugins</groupId>
<artifactId>active-directory</artifactId>
<version>2.16.1</version>
</dependency>Run the following command in your project directory to verify that all resolved dependencies use the patched release:
mvn dependency:tree -Dincludes=org.jenkins-ci.pluginsHow to Check if You Are Affected
To determine whether your Java application is affected by CVE-2020-2300, inspect your build dependencies using the Maven Dependency Plugin:
mvn dependency:tree -Dincludes=org.jenkins-ci.pluginsAnalyze the terminal output to locate any version of Active directory in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.20), your application is affected.
Note: The mvn dependency:tree -Dincludes=org.jenkins-ci.plugins command inspects the resolved dependency graph declared in your project's POM files; it does not perform automated security scanning or inspect runtime dynamic classpaths. Always verify runtime container classpaths and shaded JARs.
Technical Details
Vulnerability Mechanism & Technical Analysis
This vulnerability is classified under CWE-287: Improper Authentication, where when an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. In Active directory, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.
Source Advisory Statement
CVE-2020-2300 Affected Active directory Versions
2 component(s)| Product / Package | Ecosystem | Affected Versions | Fixed Version |
|---|---|---|---|
|
org.jenkins-ci.plugins:active-directory
|
Maven |
≥ 2.17
< 2.20
|
2.20
|
|
org.jenkins-ci.plugins:active-directory
|
Maven |
< 2.16.1
|
2.16.1
|
References
Frequently Asked Questions
What is CVE-2020-2300?
Which Active directory versions are affected?
What version fixes CVE-2020-2300?
Is active-directory affected?
What is the CVSS score of CVE-2020-2300?
What CWE is associated with CVE-2020-2300?
How can I check Maven dependencies for CVE-2020-2300?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-8wcw-cw2f-h4g2",
"modified" : "2023-10-27T12:02:08Z",
"published" : "2022-05-24T17:33:07Z",
"aliases" : [ "CVE-2020-2300" ],
"summary" : "Improper Authentication (empty password) in Jenkins Active Directory Plugin",
"details" : "Jenkins Active Directory Plugin implements two separate modes: Integration with ADSI on Windows, and an OS agnostic LDAP-based mode.\n\nThe 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.\n\nJenkins Active Directory Plugin 2.20 and 2.16.1 prohibits the use of an empty password to log in.",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
} ],
"affected" : [ {
"package" : {
"ecosystem" : "Maven",
"name" : "org.jenkins-ci.plugins:active-directory"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "2.17"
}, {
"fixed" : "2.20"
} ]
} ]
}, {
"package" : {
"ecosystem" : "Maven",
"name" : "org.jenkins-ci.plugins:active-directory"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "0"
}, {
"fixed" : "2.16.1"
} ]
} ]
} ],
"references" : [ {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2020-2300"
}, {
"type" : "WEB",
"url" : "https://github.com/jenkinsci/active-directory-plugin/commit/57e78ea7bb96b4e59405f28959ade2d26821163d"
}, {
"type" : "WEB",
"url" : "https://github.com/CVEProject/cvelist/blob/381fe967666a5ce01625a7a050427aa4757e3ca6/2020/2xxx/CVE-2020-2300.json"
}, {
"type" : "PACKAGE",
"url" : "https://github.com/jenkinsci/active-directory-plugin"
}, {
"type" : "WEB",
"url" : "https://www.jenkins.io/security/advisory/2020-11-04/#SECURITY-2099"
}, {
"type" : "WEB",
"url" : "http://www.openwall.com/lists/oss-security/2020/11/04/6"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-287" ],
"severity" : "CRITICAL",
"github_reviewed" : true,
"github_reviewed_at" : "2022-09-08T00:45:01Z",
"nvd_published_at" : "2020-11-04T15:15:00Z"
}
}