CVE-2020-2308: Kubernetes Missing Authorization Vulnerability
MODERATECVE-2020-2308 is a MODERATE (CVSS 4.3) missing authorization vulnerability (CWE-862: Missing Authorization) affecting Kubernetes libraries in the Maven ecosystem. The issue involves missing authorization in jenkins kubernetes plugin. Remediation is available by upgrading affected packages to version 1.27.4, 1.26.5, 1.25.4.1, 1.21.6.
CVE-2020-2308 at a Glance
Security Impact
CVSS: 4.3
The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N).
How to Fix CVE-2020-2308
To remediate this vulnerability, upgrade all affected Kubernetes 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.csanchez.jenkins.plugins</groupId>
<artifactId>kubernetes</artifactId>
<version>1.27.4</version>
</dependency><dependency>
<groupId>org.csanchez.jenkins.plugins</groupId>
<artifactId>kubernetes</artifactId>
<version>1.26.5</version>
</dependency><dependency>
<groupId>org.csanchez.jenkins.plugins</groupId>
<artifactId>kubernetes</artifactId>
<version>1.25.4.1</version>
</dependency><dependency>
<groupId>org.csanchez.jenkins.plugins</groupId>
<artifactId>kubernetes</artifactId>
<version>1.21.6</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.csanchez.jenkins.pluginsHow to Check if You Are Affected
To determine whether your Java application is affected by CVE-2020-2308, inspect your build dependencies using the Maven Dependency Plugin:
mvn dependency:tree -Dincludes=org.csanchez.jenkins.pluginsAnalyze the terminal output to locate any version of Kubernetes in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.27.4), your application is affected.
Note: The mvn dependency:tree -Dincludes=org.csanchez.jenkins.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-862: Missing Authorization, where the product does not perform an authorization check when an actor attempts to access a resource or perform an action. In Kubernetes, 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-2020-2308 Affected Kubernetes Versions
4 component(s)| Product / Package | Ecosystem | Affected Versions | Fixed Version |
|---|---|---|---|
|
org.csanchez.jenkins.plugins:kubernetes
|
Maven |
≥ 1.27.1
< 1.27.4
|
1.27.4
|
|
org.csanchez.jenkins.plugins:kubernetes
|
Maven |
≥ 1.26.0
< 1.26.5
|
1.26.5
|
|
org.csanchez.jenkins.plugins:kubernetes
|
Maven |
≥ 1.22.0
< 1.25.4.1
|
1.25.4.1
|
|
org.csanchez.jenkins.plugins:kubernetes
|
Maven |
< 1.21.6
|
1.21.6
|
References
Frequently Asked Questions
What is CVE-2020-2308?
Which Kubernetes versions are affected?
What version fixes CVE-2020-2308?
Is kubernetes affected?
What is the CVSS score of CVE-2020-2308?
What CWE is associated with CVE-2020-2308?
How can I check Maven dependencies for CVE-2020-2308?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-rr6j-37cv-c7x7",
"modified" : "2023-05-24T13:49:17Z",
"published" : "2022-05-24T17:33:08Z",
"aliases" : [ "CVE-2020-2308" ],
"summary" : "Missing Authorization in Jenkins Kubernetes Plugin",
"details" : "Jenkins Kubernetes Plugin prior to 1.27.4, 1.26.5, 1.25.4.1, and 1.21.6 does not perform a permission check in an HTTP endpoint.\n\nThis allows attackers with Overall/Read permission to list global pod template names.\n\nKubernetes Plugin 1.27.4, 1.26.5, 1.25.4.1, and 1.21.6 requires Overall/Administer permission to list global pod template names.",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N"
} ],
"affected" : [ {
"package" : {
"ecosystem" : "Maven",
"name" : "org.csanchez.jenkins.plugins:kubernetes"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "1.27.1"
}, {
"fixed" : "1.27.4"
} ]
} ]
}, {
"package" : {
"ecosystem" : "Maven",
"name" : "org.csanchez.jenkins.plugins:kubernetes"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "1.26.0"
}, {
"fixed" : "1.26.5"
} ]
} ]
}, {
"package" : {
"ecosystem" : "Maven",
"name" : "org.csanchez.jenkins.plugins:kubernetes"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "1.22.0"
}, {
"fixed" : "1.25.4.1"
} ]
} ]
}, {
"package" : {
"ecosystem" : "Maven",
"name" : "org.csanchez.jenkins.plugins:kubernetes"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "0"
}, {
"fixed" : "1.21.6"
} ]
} ]
} ],
"references" : [ {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2020-2308"
}, {
"type" : "WEB",
"url" : "https://github.com/jenkinsci/kubernetes-plugin/commit/7aac20940e637cdd2e38d3afd3748704e4015782"
}, {
"type" : "WEB",
"url" : "https://www.jenkins.io/security/advisory/2020-11-04/#SECURITY-2102"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-862" ],
"severity" : "MODERATE",
"github_reviewed" : true,
"github_reviewed_at" : "2022-06-23T18:05:34Z",
"nvd_published_at" : "2020-11-04T15:15:00Z"
}
}