CVE-2023-50768: Nexus jenkins plugin Jenkins Nexus Platform Plugin Cross-Site Vulnerability

MODERATE
Advisory Identifier: GHSA-phjq-7xqp-2526
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CVSS 4.2
CWE-352
Published
Advisory Summary

CVE-2023-50768 is a MODERATE (CVSS 4.2) jenkins nexus platform plugin cross-site vulnerability (CWE-352: Cross-Site Request Forgery (CSRF)) affecting Nexus jenkins plugin libraries in the Maven ecosystem. The issue involves jenkins nexus platform plugin cross-site request forgery vulnerability. Remediation is available by upgrading affected packages to version 3.18.1-01.

CVE-2023-50768 at a Glance

CVE Identifier CVE-2023-50768
GHSA Identifier GHSA-phjq-7xqp-2526
Severity MODERATE
CVSS v3.1 Base Score 4.2
CWE Classification CWE-352: Cross-Site Request Forgery (CSRF)
Affected Product Nexus jenkins plugin
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 4.2

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N).

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

How to Fix CVE-2023-50768

To remediate this vulnerability, upgrade all affected Nexus jenkins plugin 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.sonatype.nexus.ci:nexus-jenkins-plugin fixed: 3.18.1-01 
<dependency>
    <groupId>org.sonatype.nexus.ci</groupId>
    <artifactId>nexus-jenkins-plugin</artifactId>
    <version>3.18.1-01</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.sonatype.nexus.ci

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2023-50768, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree -Dincludes=org.sonatype.nexus.ci

Analyze the terminal output to locate any version of Nexus jenkins plugin in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 3.18.1-01), your application is affected.

Note: The mvn dependency:tree -Dincludes=org.sonatype.nexus.ci 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 Nexus jenkins plugin, 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 Nexus Platform Plugin 3.18.0-03 and earlier does not perform permission checks in methods implementing form validation. This allows attackers with Overall/Read permission to connect to an attacker-specified HTTP server using attacker-specified credentials IDs obtained through another method, capturing credentials stored in Jenkins. Additionally, these form validation methods do not require POST requests, resulting in a cross-site request forgery (CSRF) vulnerability. Nexus Platform Plugin 3.18.1-01 requires POST requests and Overall/Administer permission for the affected form validation methods.

CVE-2023-50768 Affected Nexus jenkins plugin Versions

1 component(s)
Fixed Versions:
3.18.1-01
Product / Package Ecosystem Affected Versions Fixed Version
org.sonatype.nexus.ci:nexus-jenkins-plugin
maven/org.sonatype.nexus.ci/nexus-jenkins-plugin
Maven
< 3.18.1-01
3.18.1-01

References

NVD — CVE-2023-50768 NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-50768
Nexus jenkins plugin Source Repository REPOSITORY
https://github.com/jenkinsci/nexus-platform-plugin/pull/291
Security Fix Commit FIX COMMIT
https://github.com/jenkinsci/nexus-platform-plugin/commit/1d5e1e9e457af5e8ce8c9a403933d6cb73542dbd
Nexus jenkins plugin Source Repository REPOSITORY
https://github.com/jenkinsci/nexus-platform-plugin
Nexus jenkins plugin Security Information SECURITY
https://www.jenkins.io/security/advisory/2023-12-13/#SECURITY-3203
Nexus jenkins plugin Security Information SECURITY
http://www.openwall.com/lists/oss-security/2023/12/13/4

Frequently Asked Questions

What is CVE-2023-50768?
CVE-2023-50768 is a security vulnerability in Nexus jenkins plugin involving Jenkins Nexus Platform Plugin Cross-Site Request Forgery vulnerability under CWE-352: Cross-Site Request Forgery (CSRF).
Which Nexus jenkins plugin versions are affected?
Affected versions include releases prior to 3.18.1-01 across affected packages: org.sonatype.nexus.ci:nexus-jenkins-plugin.
What version fixes CVE-2023-50768?
Upgrading to 3.18.1-01 (or the latest patched release for your respective branch) resolves the vulnerability.
Is nexus-jenkins-plugin affected?
Yes, org.sonatype.nexus.ci:nexus-jenkins-plugin is affected in releases prior to 3.18.1-01. Upgrade your dependency to 3.18.1-01 or later.
What is the CVSS score of CVE-2023-50768?
CVE-2023-50768 has a CVSS v3.1 base score of 4.2 (MODERATE) with vector string CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N.
What CWE is associated with CVE-2023-50768?
CVE-2023-50768 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-2023-50768?
Run the dependency tree command: 'mvn dependency:tree -Dincludes=org.sonatype.nexus.ci'. 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-phjq-7xqp-2526",
  "modified" : "2023-12-18T23:39:44Z",
  "published" : "2023-12-13T18:31:04Z",
  "aliases" : [ "CVE-2023-50768" ],
  "summary" : "Jenkins Nexus Platform Plugin Cross-Site Request Forgery vulnerability",
  "details" : "Jenkins Nexus Platform Plugin 3.18.0-03 and earlier does not perform permission checks in methods implementing form validation.\n\nThis allows attackers with Overall/Read permission to connect to an attacker-specified HTTP server using attacker-specified credentials IDs obtained through another method, capturing credentials stored in Jenkins.\n\nAdditionally, these form validation methods do not require POST requests, resulting in a cross-site request forgery (CSRF) vulnerability.\n\nNexus Platform Plugin 3.18.1-01 requires POST requests and Overall/Administer permission for the affected form validation methods.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.sonatype.nexus.ci:nexus-jenkins-plugin"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "3.18.1-01"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2023-50768"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/jenkinsci/nexus-platform-plugin/pull/291"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/jenkinsci/nexus-platform-plugin/commit/1d5e1e9e457af5e8ce8c9a403933d6cb73542dbd"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/jenkinsci/nexus-platform-plugin"
  }, {
    "type" : "WEB",
    "url" : "https://www.jenkins.io/security/advisory/2023-12-13/#SECURITY-3203"
  }, {
    "type" : "WEB",
    "url" : "http://www.openwall.com/lists/oss-security/2023/12/13/4"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-352" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-12-18T23:39:44Z",
    "nvd_published_at" : "2023-12-13T18:15:43Z"
  }
}