CVE-2018-1000406: Jenkins core Path Traversal Vulnerability

MODERATE
Advisory Identifier: GHSA-3pr8-rf62-g893
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CVSS 6.5
CWE-22
Published
Advisory Summary

CVE-2018-1000406 is a MODERATE (CVSS 6.5) path traversal vulnerability (CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')) affecting Jenkins core libraries in the Maven ecosystem. The issue involves path traversal in jenkins. Remediation is available by upgrading affected packages to version 2.138.2, 2.146.

CVE-2018-1000406 at a Glance

CVE Identifier CVE-2018-1000406
GHSA Identifier GHSA-3pr8-rf62-g893
Severity MODERATE
CVSS v3.1 Base Score 6.5
CWE Classification CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Affected Product Jenkins core
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 6.5

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

How to Fix CVE-2018-1000406

To remediate this vulnerability, upgrade all affected Jenkins core 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.main:jenkins-core fixed: 2.138.2 
<dependency>
    <groupId>org.jenkins-ci.main</groupId>
    <artifactId>jenkins-core</artifactId>
    <version>2.138.2</version>
</dependency>
org.jenkins-ci.main:jenkins-core fixed: 2.146 
<dependency>
    <groupId>org.jenkins-ci.main</groupId>
    <artifactId>jenkins-core</artifactId>
    <version>2.146</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.main

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2018-1000406, inspect your build dependencies using the Maven Dependency Plugin:

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

Analyze the terminal output to locate any version of Jenkins core in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.138.2), your application is affected.

Note: The mvn dependency:tree -Dincludes=org.jenkins-ci.main 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-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal'), where the product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. In Jenkins core, 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

A path traversal vulnerability exists in Jenkins 2.145 and earlier, LTS 2.138.1 and earlier in core/src/main/java/hudson/model/FileParameterValue.java that allows attackers with Job/Configure permission to define a file parameter with a file name outside the intended directory, resulting in an arbitrary file write on the Jenkins master when scheduling a build.

CVE-2018-1000406 Affected Jenkins core Versions

2 component(s)
Fixed Versions:
2.138.22.146
Product / Package Ecosystem Affected Versions Fixed Version
org.jenkins-ci.main:jenkins-core
maven/org.jenkins-ci.main/jenkins-core
Maven
< 2.138.2
2.138.2
org.jenkins-ci.main:jenkins-core
maven/org.jenkins-ci.main/jenkins-core
Maven
≥ 2.140
< 2.146
2.146

References

NVD — CVE-2018-1000406 NVD
https://nvd.nist.gov/vuln/detail/CVE-2018-1000406
Security Fix Commit FIX COMMIT
https://github.com/jenkinsci/jenkins/commit/c3351d2e7c3edfee82b9470e9aa1168982296072
Jenkins core Source Repository REPOSITORY
https://github.com/jenkinsci/jenkins
Jenkins core Security Information SECURITY
https://jenkins.io/security/advisory/2018-10-10/#SECURITY-1074
Jenkins core Security Information SECURITY
http://www.securityfocus.com/bid/106532

Frequently Asked Questions

What is CVE-2018-1000406?
CVE-2018-1000406 is a security vulnerability in Jenkins core involving Path Traversal in Jenkins under CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal').
Which Jenkins core versions are affected?
Affected versions include releases prior to 2.138.2, 2.146 across affected packages: org.jenkins-ci.main:jenkins-core.
What version fixes CVE-2018-1000406?
Upgrading to 2.138.2, 2.146 (or the latest patched release for your respective branch) resolves the vulnerability.
Is jenkins-core affected?
Yes, org.jenkins-ci.main:jenkins-core is affected in releases prior to 2.138.2, 2.146. Upgrade your dependency to 2.138.2, 2.146 or later.
What is the CVSS score of CVE-2018-1000406?
CVE-2018-1000406 has a CVSS v3.1 base score of 6.5 (MODERATE) with vector string CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N.
What CWE is associated with CVE-2018-1000406?
CVE-2018-1000406 is classified under CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') (The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.).
How can I check Maven dependencies for CVE-2018-1000406?
Run the dependency tree command: 'mvn dependency:tree -Dincludes=org.jenkins-ci.main'. 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-3pr8-rf62-g893",
  "modified" : "2024-04-19T18:54:12Z",
  "published" : "2022-05-14T01:04:36Z",
  "aliases" : [ "CVE-2018-1000406" ],
  "summary" : "Path Traversal in Jenkins",
  "details" : "A path traversal vulnerability exists in Jenkins 2.145 and earlier, LTS 2.138.1 and earlier in core/src/main/java/hudson/model/FileParameterValue.java that allows attackers with Job/Configure permission to define a file parameter with a file name outside the intended directory, resulting in an arbitrary file write on the Jenkins master when scheduling a build.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.jenkins-ci.main:jenkins-core"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "2.138.2"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 2.138.1"
    }
  }, {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.jenkins-ci.main:jenkins-core"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "2.140"
      }, {
        "fixed" : "2.146"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 2.145"
    }
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2018-1000406"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/jenkinsci/jenkins/commit/c3351d2e7c3edfee82b9470e9aa1168982296072"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/jenkinsci/jenkins"
  }, {
    "type" : "WEB",
    "url" : "https://jenkins.io/security/advisory/2018-10-10/#SECURITY-1074"
  }, {
    "type" : "WEB",
    "url" : "http://www.securityfocus.com/bid/106532"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-22" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-06-30T17:23:50Z",
    "nvd_published_at" : "2019-01-09T23:29:00Z"
  }
}