CVE-2020-2233: Pipeline maven Missing Permission Check Vulnerability

MODERATE
Advisory Identifier: GHSA-32xp-m6vg-gwpj
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CVSS 4.3
CWE-285 CWE-863
Published
Advisory Summary

CVE-2020-2233 is a MODERATE (CVSS 4.3) missing permission check vulnerability (CWE-285: Improper Authorization) affecting Pipeline maven libraries in the Maven ecosystem. The issue involves missing permission check in jenkins pipeline maven integration plugin allows enumerating credentials ids. Remediation is available by upgrading affected packages to version 3.8.3.

CVE-2020-2233 at a Glance

CVE Identifier CVE-2020-2233
GHSA Identifier GHSA-32xp-m6vg-gwpj
Severity MODERATE
CVSS v3.1 Base Score 4.3
CWE Classification CWE-285: Improper Authorization
Affected Product Pipeline maven
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:3.0/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-2020-2233

To remediate this vulnerability, upgrade all affected Pipeline maven 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:pipeline-maven fixed: 3.8.3 
<dependency>
    <groupId>org.jenkins-ci.plugins</groupId>
    <artifactId>pipeline-maven</artifactId>
    <version>3.8.3</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-2020-2233, 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 Pipeline maven in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 3.8.3), 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-285: Improper Authorization, where the product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action. In Pipeline maven, 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

Pipeline Maven Integration Plugin 3.8.2 and earlier does not perform a permission check in an HTTP endpoint. This allows attackers with Overall/Read access to Jenkins to enumerate credentials IDs of credentials stored in Jenkins. Those can be used as part of an attack to capture the credentials using another vulnerability. An enumeration of credentials IDs in Pipeline Maven Integration Plugin 3.8.3 requires the appropriate permissions.

CVE-2020-2233 Affected Pipeline maven Versions

1 component(s)
Fixed Versions:
3.8.3
Product / Package Ecosystem Affected Versions Fixed Version
org.jenkins-ci.plugins:pipeline-maven
maven/org.jenkins-ci.plugins/pipeline-maven
Maven
< 3.8.3
3.8.3

References

NVD — CVE-2020-2233 NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-2233
Pipeline maven Source Repository REPOSITORY
https://github.com/jenkinsci/pipeline-maven-plugin
Pipeline maven Security Information SECURITY
https://jenkins.io/security/advisory/2020-08-12/#SECURITY-1794%20(1)
Pipeline maven Security Information SECURITY
http://www.openwall.com/lists/oss-security/2020/08/12/4

Frequently Asked Questions

What is CVE-2020-2233?
CVE-2020-2233 is a security vulnerability in Pipeline maven involving Missing permission check in Jenkins Pipeline Maven Integration Plugin allows enumerating credentials IDs under CWE-285: Improper Authorization.
Which Pipeline maven versions are affected?
Affected versions include releases prior to 3.8.3 across affected packages: org.jenkins-ci.plugins:pipeline-maven.
What version fixes CVE-2020-2233?
Upgrading to 3.8.3 (or the latest patched release for your respective branch) resolves the vulnerability.
Is pipeline-maven affected?
Yes, org.jenkins-ci.plugins:pipeline-maven is affected in releases prior to 3.8.3. Upgrade your dependency to 3.8.3 or later.
What is the CVSS score of CVE-2020-2233?
CVE-2020-2233 has a CVSS v3.1 base score of 4.3 (MODERATE) with vector string CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.
What CWE is associated with CVE-2020-2233?
CVE-2020-2233 is classified under CWE-285: Improper Authorization (The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action.).
How can I check Maven dependencies for CVE-2020-2233?
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-32xp-m6vg-gwpj",
  "modified" : "2022-12-20T21:22:39Z",
  "published" : "2022-05-24T17:25:24Z",
  "aliases" : [ "CVE-2020-2233" ],
  "summary" : "Missing permission check in Jenkins Pipeline Maven Integration Plugin allows enumerating credentials IDs",
  "details" : "Pipeline Maven Integration Plugin 3.8.2 and earlier does not perform a permission check in an HTTP endpoint.\n\nThis allows attackers with Overall/Read access to Jenkins to enumerate credentials IDs of credentials stored in Jenkins. Those can be used as part of an attack to capture the credentials using another vulnerability.\n\nAn enumeration of credentials IDs in Pipeline Maven Integration Plugin 3.8.3 requires the appropriate permissions.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.0/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:pipeline-maven"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "3.8.3"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2020-2233"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/jenkinsci/pipeline-maven-plugin"
  }, {
    "type" : "WEB",
    "url" : "https://jenkins.io/security/advisory/2020-08-12/#SECURITY-1794%20(1)"
  }, {
    "type" : "WEB",
    "url" : "http://www.openwall.com/lists/oss-security/2020/08/12/4"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-285", "CWE-863" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-12-20T21:22:39Z",
    "nvd_published_at" : "2020-08-12T14:15:00Z"
  }
}