CVE-2021-21641: Promoted builds CSRF Vulnerability Vulnerability

MODERATE
Advisory Identifier: GHSA-5cxw-8v65-76vf
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CVSS 4.3
CWE-352
Published
Advisory Summary

CVE-2021-21641 is a MODERATE (CVSS 4.3) csrf vulnerability vulnerability (CWE-352: Cross-Site Request Forgery (CSRF)) affecting Promoted builds libraries in the Maven ecosystem. The issue involves csrf vulnerability in jenkins promoted builds plugin. Remediation is available by upgrading affected packages to version 3.9.1.

CVE-2021-21641 at a Glance

CVE Identifier CVE-2021-21641
GHSA Identifier GHSA-5cxw-8v65-76vf
Severity MODERATE
CVSS v3.1 Base Score 4.3
CWE Classification CWE-352: Cross-Site Request Forgery (CSRF)
Affected Product Promoted builds
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:N/UI:R/S:U/C:N/I:L/A:N).

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

How to Fix CVE-2021-21641

To remediate this vulnerability, upgrade all affected Promoted builds 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:promoted-builds fixed: 3.9.1 
<dependency>
    <groupId>org.jenkins-ci.plugins</groupId>
    <artifactId>promoted-builds</artifactId>
    <version>3.9.1</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-2021-21641, 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 Promoted builds in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 3.9.1), 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-352: Cross-Site Request Forgery (CSRF), where the web application does not, or cannot, sufficiently verify whether a request was intentionally provided by the user who sent the request, which could have originated from an unauthorized actor. In Promoted builds, 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 promoted builds Plugin 3.9 and earlier does not require POST requests for HTTP endpoints implementing promotion (regular, forced, and re-execute), resulting in cross-site request forgery (CSRF) vulnerabilities. These vulnerabilities allow attackers to promote builds. Jenkins promoted builds Plugin 3.9.1 requires POST requests for the affected HTTP endpoints. A security hardening since Jenkins 2.287 and LTS 2.277.2 prevents exploitation of this vulnerability.

CVE-2021-21641 Affected Promoted builds Versions

1 component(s)
Fixed Versions:
3.9.1
Product / Package Ecosystem Affected Versions Fixed Version
org.jenkins-ci.plugins:promoted-builds
maven/org.jenkins-ci.plugins/promoted-builds
Maven
< 3.9.1
3.9.1

References

NVD — CVE-2021-21641 NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-21641
Security Fix Commit FIX COMMIT
https://github.com/jenkinsci/promoted-builds-plugin/commit/46086a74891d620042c3d28a19cba3510c5dbf6a
Promoted builds Source Repository REPOSITORY
https://github.com/jenkinsci/promoted-builds-plugin
Promoted builds Security Information SECURITY
https://www.jenkins.io/security/advisory/2021-04-07/#SECURITY-2293
Promoted builds Security Information SECURITY
http://www.openwall.com/lists/oss-security/2021/04/07/2

Frequently Asked Questions

What is CVE-2021-21641?
CVE-2021-21641 is a security vulnerability in Promoted builds involving CSRF vulnerability in Jenkins promoted builds Plugin under CWE-352: Cross-Site Request Forgery (CSRF).
Which Promoted builds versions are affected?
Affected versions include releases prior to 3.9.1 across affected packages: org.jenkins-ci.plugins:promoted-builds.
What version fixes CVE-2021-21641?
Upgrading to 3.9.1 (or the latest patched release for your respective branch) resolves the vulnerability.
Is promoted-builds affected?
Yes, org.jenkins-ci.plugins:promoted-builds is affected in releases prior to 3.9.1. Upgrade your dependency to 3.9.1 or later.
What is the CVSS score of CVE-2021-21641?
CVE-2021-21641 has a CVSS v3.1 base score of 4.3 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N.
What CWE is associated with CVE-2021-21641?
CVE-2021-21641 is classified under CWE-352: Cross-Site Request Forgery (CSRF) (The web application does not, or cannot, sufficiently verify whether a request was intentionally provided by the user who sent the request, which could have originated from an unauthorized actor.).
How can I check Maven dependencies for CVE-2021-21641?
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-5cxw-8v65-76vf",
  "modified" : "2023-10-27T14:01:31Z",
  "published" : "2022-05-24T17:46:47Z",
  "aliases" : [ "CVE-2021-21641" ],
  "summary" : "CSRF vulnerability in Jenkins promoted builds Plugin",
  "details" : "Jenkins promoted builds Plugin 3.9 and earlier does not require POST requests for HTTP endpoints implementing promotion (regular, forced, and re-execute), resulting in cross-site request forgery (CSRF) vulnerabilities.\n\nThese vulnerabilities allow attackers to promote builds.\n\nJenkins promoted builds Plugin 3.9.1 requires POST requests for the affected HTTP endpoints.\n\nA security hardening since Jenkins 2.287 and LTS 2.277.2 prevents exploitation of this vulnerability.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.jenkins-ci.plugins:promoted-builds"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "3.9.1"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 3.9"
    }
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2021-21641"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/jenkinsci/promoted-builds-plugin/commit/46086a74891d620042c3d28a19cba3510c5dbf6a"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/jenkinsci/promoted-builds-plugin"
  }, {
    "type" : "WEB",
    "url" : "https://www.jenkins.io/security/advisory/2021-04-07/#SECURITY-2293"
  }, {
    "type" : "WEB",
    "url" : "http://www.openwall.com/lists/oss-security/2021/04/07/2"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-352" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-12-13T18:59:35Z",
    "nvd_published_at" : "2021-04-07T14:15:00Z"
  }
}