CVE-2023-50767: Nexus jenkins plugin Jenkins Nexus Platform Plugin Missing Vulnerability

HIGH
Advisory Identifier: GHSA-9vrm-747r-668v
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CVSS 7.1
CWE-862
Published
Advisory Summary

CVE-2023-50767 is a HIGH (CVSS 7.1) jenkins nexus platform plugin missing vulnerability (CWE-862: Missing Authorization) affecting Nexus jenkins plugin libraries in the Maven ecosystem. The issue involves jenkins nexus platform plugin missing permission check. Remediation is available by upgrading affected packages to version 3.18.1-01.

CVE-2023-50767 at a Glance

CVE Identifier CVE-2023-50767
GHSA Identifier GHSA-9vrm-747r-668v
Severity HIGH
CVSS v3.1 Base Score 7.1
CWE Classification CWE-862: Missing Authorization
Affected Product Nexus jenkins plugin
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 7.1

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:H/I:L/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 High (C:H)
Integrity Low (I:L)
Availability None (A:N)

How to Fix CVE-2023-50767

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-2023-50767, 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-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 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 send an HTTP request to an attacker-specified URL and parse the response as XML. Additionally, the plugin does not configure its XML parser to prevent XML external entity (XXE) attacks, so attackers can have Jenkins parse a crafted XML response that uses external entities for extraction of secrets from the Jenkins controller or server-side request forgery. 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 configures its XML parser to prevent XML external entity (XXE) attacks. Additionally, POST requests and Overall/Administer permission are required for the affected HTTP endpoints.

CVE-2023-50767 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-2023-50767 NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-50767
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-3204
Nexus jenkins plugin Security Information SECURITY
http://www.openwall.com/lists/oss-security/2023/12/13/4

Frequently Asked Questions

What is CVE-2023-50767?
CVE-2023-50767 is a security vulnerability in Nexus jenkins plugin involving Jenkins Nexus Platform Plugin missing permission check under CWE-862: Missing Authorization.
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-2023-50767?
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-2023-50767?
CVE-2023-50767 has a CVSS v3.1 base score of 7.1 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N.
What CWE is associated with CVE-2023-50767?
CVE-2023-50767 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-2023-50767?
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-9vrm-747r-668v",
  "modified" : "2023-12-18T23:39:41Z",
  "published" : "2023-12-13T18:31:04Z",
  "aliases" : [ "CVE-2023-50767" ],
  "summary" : "Jenkins Nexus Platform Plugin missing permission check",
  "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 send an HTTP request to an attacker-specified URL and parse the response as XML.\n\nAdditionally, the plugin does not configure its XML parser to prevent XML external entity (XXE) attacks, so attackers can have Jenkins parse a crafted XML response that uses external entities for extraction of secrets from the Jenkins controller or server-side request forgery.\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 configures its XML parser to prevent XML external entity (XXE) attacks.\n\nAdditionally, POST requests and Overall/Administer permission are required for the affected HTTP endpoints.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/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-2023-50767"
  }, {
    "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-3204"
  }, {
    "type" : "WEB",
    "url" : "http://www.openwall.com/lists/oss-security/2023/12/13/4"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-862" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-12-18T23:39:41Z",
    "nvd_published_at" : "2023-12-13T18:15:43Z"
  }
}