CVE-2018-1000056: Junit Improper Restriction Of XML External Vulnerability

HIGH
Advisory Identifier: GHSA-4rj6-9pjh-882r
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CVSS 8.3
CWE-611
Published
Advisory Summary

CVE-2018-1000056 is a HIGH (CVSS 8.3) improper restriction of xml external vulnerability (CWE-611: Improper Restriction of XML External Entity Reference) affecting Junit libraries in the Maven ecosystem. The issue involves improper restriction of xml external entity reference in jenkins junit plugin. Remediation is available by upgrading affected packages to version 1.24.

CVE-2018-1000056 at a Glance

CVE Identifier CVE-2018-1000056
GHSA Identifier GHSA-4rj6-9pjh-882r
Severity HIGH
CVSS v3.1 Base Score 8.3
CWE Classification CWE-611: Improper Restriction of XML External Entity Reference
Affected Product Junit
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 8.3

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:H/I:L/A:H).

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 High (A:H)

How to Fix CVE-2018-1000056

To remediate this vulnerability, upgrade all affected Junit 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:junit fixed: 1.24 
<dependency>
    <groupId>org.jenkins-ci.plugins</groupId>
    <artifactId>junit</artifactId>
    <version>1.24</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-2018-1000056, 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 Junit in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.24), 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-611: Improper Restriction of XML External Entity Reference, where the product processes an xml document that can contain xml entities with uris that resolve to documents outside of the intended sphere of control, causing the product to embed incorrect documents into its output. In Junit, 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 JUnit Plugin 1.23 and earlier processes XML external entities in files it parses as part of the build process, allowing attackers with user permissions in Jenkins to extract secrets from the Jenkins master, perform server-side request forgery, or denial-of-service attacks.

CVE-2018-1000056 Affected Junit Versions

1 component(s)
Fixed Versions:
1.24
Product / Package Ecosystem Affected Versions Fixed Version
org.jenkins-ci.plugins:junit
maven/org.jenkins-ci.plugins/junit
Maven
< 1.24
1.24

References

NVD — CVE-2018-1000056 NVD
https://nvd.nist.gov/vuln/detail/CVE-2018-1000056
Security Fix Commit FIX COMMIT
https://github.com/jenkinsci/junit-plugin/commit/15f39fc49d9f25bca872badb48e708a8bb815ea7
Junit Source Repository REPOSITORY
https://github.com/jenkinsci/junit-plugin
Junit Security Information SECURITY
https://jenkins.io/security/advisory/2018-02-05

Frequently Asked Questions

What is CVE-2018-1000056?
CVE-2018-1000056 is a security vulnerability in Junit involving Improper Restriction of XML External Entity Reference in Jenkins JUnit Plugin under CWE-611: Improper Restriction of XML External Entity Reference.
Which Junit versions are affected?
Affected versions include releases prior to 1.24 across affected packages: org.jenkins-ci.plugins:junit.
What version fixes CVE-2018-1000056?
Upgrading to 1.24 (or the latest patched release for your respective branch) resolves the vulnerability.
Is junit affected?
Yes, org.jenkins-ci.plugins:junit is affected in releases prior to 1.24. Upgrade your dependency to 1.24 or later.
What is the CVSS score of CVE-2018-1000056?
CVE-2018-1000056 has a CVSS v3.1 base score of 8.3 (HIGH) with vector string CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H.
What CWE is associated with CVE-2018-1000056?
CVE-2018-1000056 is classified under CWE-611: Improper Restriction of XML External Entity Reference (The product processes an XML document that can contain XML entities with URIs that resolve to documents outside of the intended sphere of control, causing the product to embed incorrect documents into its output.).
How can I check Maven dependencies for CVE-2018-1000056?
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-4rj6-9pjh-882r",
  "modified" : "2022-06-30T19:45:12Z",
  "published" : "2022-05-14T03:40:06Z",
  "aliases" : [ "CVE-2018-1000056" ],
  "summary" : "Improper Restriction of XML External Entity Reference in Jenkins JUnit Plugin",
  "details" : "Jenkins JUnit Plugin 1.23 and earlier processes XML external entities in files it parses as part of the build process, allowing attackers with user permissions in Jenkins to extract secrets from the Jenkins master, perform server-side request forgery, or denial-of-service attacks.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.jenkins-ci.plugins:junit"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.24"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 1.23"
    }
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2018-1000056"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/jenkinsci/junit-plugin/commit/15f39fc49d9f25bca872badb48e708a8bb815ea7"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/jenkinsci/junit-plugin"
  }, {
    "type" : "WEB",
    "url" : "https://jenkins.io/security/advisory/2018-02-05"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-611" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-06-30T19:45:12Z",
    "nvd_published_at" : "2018-02-09T23:29:00Z"
  }
}