Vulnerabilities in pkg:maven/org.jenkins-ci.plugins/kubernetes-cli

PACKAGE
Advisory Identifier: GHSA-xrg9-wwrq-xmx9
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Advisory Summary

CVE-2021-21661 is a MODERATE (CVSS 4.3) missing authorization vulnerability (CWE-862: Missing Authorization) affecting Kubernetes cli libraries in the Maven ecosystem. The issue involves missing authorization in jenkins kubernetes cli plugin. Remediation is available by upgrading affected packages to version 1.10.1.

1 Known Advisory Record(s)
Package Vulnerability Intelligence

pkg:maven/org.jenkins-ci.plugins/kubernetes-cli

1 Known Advisory Record(s)

Vulnerability advisories affecting package pkg:maven/org.jenkins-ci.plugins/kubernetes-cli. Select an advisory below to view technical details or fixes.

Advisory ID CVE / NVD Severity Summary
GHSA-xrg9-wwrq-xmx9 CVE-2021-21661 MODERATE Missing Authorization in Jenkins Kubernetes CLI Plugin

CVE-2021-21661 at a Glance

CVE Identifier CVE-2021-21661
GHSA Identifier GHSA-xrg9-wwrq-xmx9
Severity MODERATE
CVSS v3.1 Base Score 4.3
CWE Classification CWE-862: Missing Authorization
Affected Product Kubernetes cli
Package Ecosystem Maven
Published Date
Last Updated

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).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality Low (C:L)
Integrity None (I:N)
Availability None (A:N)

How to Fix CVE-2021-21661

To remediate this vulnerability, upgrade all affected Kubernetes cli dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

org.jenkins-ci.plugins:kubernetes-cli fixed: 1.10.1 
<dependency>
    <groupId>org.jenkins-ci.plugins</groupId>
    <artifactId>kubernetes-cli</artifactId>
    <version>1.10.1</version>
</dependency>
Verify Direct and Transitive Dependencies

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.plugins

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2021-21661, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree -Dincludes=org.jenkins-ci.plugins

Analyze the terminal output to locate any version of Kubernetes cli in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.10.1), 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-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 cli, 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

Jenkins Kubernetes CLI Plugin 1.10.0 and earlier does not perform permission checks in several HTTP endpoints, allowing attackers with Overall/Read permission to enumerate credentials IDs of credentials stored in Jenkins.

CVE-2021-21661 Affected Kubernetes cli Versions

1 component(s)
Fixed Versions:
1.10.1
Product / Package Ecosystem Affected Versions Fixed Version
org.jenkins-ci.plugins:kubernetes-cli
maven/org.jenkins-ci.plugins/kubernetes-cli
Maven
< 1.10.1
1.10.1

References

NVD — CVE-2021-21661 NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-21661
Kubernetes cli Security Information SECURITY
https://www.jenkins.io/security/advisory/2021-06-10/#SECURITY-2370
Kubernetes cli Security Information SECURITY
http://www.openwall.com/lists/oss-security/2021/06/10/14

Frequently Asked Questions

What is CVE-2021-21661?
CVE-2021-21661 is a security vulnerability in Kubernetes cli involving Missing Authorization in Jenkins Kubernetes CLI Plugin under CWE-862: Missing Authorization.
Which Kubernetes cli versions are affected?
Affected versions include releases prior to 1.10.1 across affected packages: org.jenkins-ci.plugins:kubernetes-cli.
What version fixes CVE-2021-21661?
Upgrading to 1.10.1 (or the latest patched release for your respective branch) resolves the vulnerability.
Is kubernetes-cli affected?
Yes, org.jenkins-ci.plugins:kubernetes-cli is affected in releases prior to 1.10.1. Upgrade your dependency to 1.10.1 or later.
What is the CVSS score of CVE-2021-21661?
CVE-2021-21661 has a CVSS v3.1 base score of 4.3 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.
What CWE is associated with CVE-2021-21661?
CVE-2021-21661 is classified under CWE-862: Missing Authorization (The product does not perform an authorization check when an actor attempts to access a resource or perform an action.).
How can I check Maven dependencies for CVE-2021-21661?
Run the dependency tree command: 'mvn dependency:tree -Dincludes=org.jenkins-ci.plugins'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-xrg9-wwrq-xmx9",
  "modified" : "2023-10-27T15:33:07Z",
  "published" : "2021-06-16T17:11:30Z",
  "aliases" : [ "CVE-2021-21661" ],
  "summary" : "Missing Authorization in Jenkins Kubernetes CLI Plugin",
  "details" : "Jenkins Kubernetes CLI Plugin 1.10.0 and earlier does not perform permission checks in several HTTP endpoints, allowing attackers with Overall/Read permission to enumerate credentials IDs of credentials stored in Jenkins.",
  "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.jenkins-ci.plugins:kubernetes-cli"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.10.1"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2021-21661"
  }, {
    "type" : "WEB",
    "url" : "https://www.jenkins.io/security/advisory/2021-06-10/#SECURITY-2370"
  }, {
    "type" : "WEB",
    "url" : "http://www.openwall.com/lists/oss-security/2021/06/10/14"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-862" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2021-06-14T19:17:11Z",
    "nvd_published_at" : "2021-06-10T15:15:00Z"
  }
}