CVE-2020-2175: Fitnesse Cross-Site Scripting Vulnerability

MODERATE
Advisory Identifier: GHSA-f6vx-3fq6-hxm8
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CVSS 5.4
CWE-79
Published
Advisory Summary

CVE-2020-2175 is a MODERATE (CVSS 5.4) cross-site scripting vulnerability (CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) affecting Fitnesse libraries in the Maven ecosystem. The issue involves stored xss vulnerability in jenkins fitnesse plugin. Remediation is available by upgrading affected packages to version 1.32.

CVE-2020-2175 at a Glance

CVE Identifier CVE-2020-2175
GHSA Identifier GHSA-f6vx-3fq6-hxm8
Severity MODERATE
CVSS v3.1 Base Score 5.4
CWE Classification CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Product Fitnesse
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 5.4

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:R/S:C/C:L/I:L/A:N).

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

How to Fix CVE-2020-2175

To remediate this vulnerability, upgrade all affected Fitnesse 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:fitnesse fixed: 1.32 
<dependency>
    <groupId>org.jenkins-ci.plugins</groupId>
    <artifactId>fitnesse</artifactId>
    <version>1.32</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-2020-2175, 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 Fitnesse in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.32), 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-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'), where the product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. In Fitnesse, 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 FitNesse Plugin 1.31 and earlier does not correctly escape report contents before showing them on the Jenkins UI. This results in a stored cross-site scripting (XSS) vulnerability exploitable by users able to control the XML input files processed by the plugin. Jenkins FitNesse Plugin 1.32 escapes content from XML input files before rendering it on the Jenkins UI.

CVE-2020-2175 Affected Fitnesse Versions

1 component(s)
Fixed Versions:
1.32
Product / Package Ecosystem Affected Versions Fixed Version
org.jenkins-ci.plugins:fitnesse
maven/org.jenkins-ci.plugins/fitnesse
Maven
< 1.32
1.32

References

NVD — CVE-2020-2175 NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-2175
Security Fix Commit FIX COMMIT
https://github.com/jenkinsci/fitnesse-plugin/commit/309d40212338ad6e388f61892e4386f6645438a9
Security Fix Commit FIX COMMIT
https://github.com/jenkinsci/fitnesse-plugin/commit/a49167115cc0a3dfca1c139c2c277a7c5c06074d
Security Fix Commit FIX COMMIT
https://github.com/jenkinsci/fitnesse-plugin/commit/db72cc49b5cb8a33359805a86a841851673def2d
Fitnesse Source Repository REPOSITORY
https://github.com/jenkinsci/fitnesse-plugin
Fitnesse Security Information SECURITY
https://jenkins.io/security/advisory/2020-04-07/#SECURITY-1801
Fitnesse Security Information SECURITY
http://www.openwall.com/lists/oss-security/2020/04/07/3

Frequently Asked Questions

What is CVE-2020-2175?
CVE-2020-2175 is a security vulnerability in Fitnesse involving Stored XSS vulnerability in Jenkins FitNesse Plugin under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting').
Which Fitnesse versions are affected?
Affected versions include releases prior to 1.32 across affected packages: org.jenkins-ci.plugins:fitnesse.
What version fixes CVE-2020-2175?
Upgrading to 1.32 (or the latest patched release for your respective branch) resolves the vulnerability.
Is fitnesse affected?
Yes, org.jenkins-ci.plugins:fitnesse is affected in releases prior to 1.32. Upgrade your dependency to 1.32 or later.
What is the CVSS score of CVE-2020-2175?
CVE-2020-2175 has a CVSS v3.1 base score of 5.4 (MODERATE) with vector string CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.
What CWE is associated with CVE-2020-2175?
CVE-2020-2175 is classified under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') (The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.).
How can I check Maven dependencies for CVE-2020-2175?
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-f6vx-3fq6-hxm8",
  "modified" : "2023-12-14T10:20:00Z",
  "published" : "2022-05-24T17:13:39Z",
  "aliases" : [ "CVE-2020-2175" ],
  "summary" : "Stored XSS vulnerability in Jenkins FitNesse Plugin",
  "details" : "Jenkins FitNesse Plugin 1.31 and earlier does not correctly escape report contents before showing them on the Jenkins UI.\n\nThis results in a stored cross-site scripting (XSS) vulnerability exploitable by users able to control the XML input files processed by the plugin.\n\nJenkins FitNesse Plugin 1.32 escapes content from XML input files before rendering it on the Jenkins UI.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.jenkins-ci.plugins:fitnesse"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.32"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 1.31"
    }
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2020-2175"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/jenkinsci/fitnesse-plugin/commit/309d40212338ad6e388f61892e4386f6645438a9"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/jenkinsci/fitnesse-plugin/commit/a49167115cc0a3dfca1c139c2c277a7c5c06074d"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/jenkinsci/fitnesse-plugin/commit/db72cc49b5cb8a33359805a86a841851673def2d"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/jenkinsci/fitnesse-plugin"
  }, {
    "type" : "WEB",
    "url" : "https://jenkins.io/security/advisory/2020-04-07/#SECURITY-1801"
  }, {
    "type" : "WEB",
    "url" : "http://www.openwall.com/lists/oss-security/2020/04/07/3"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-12-20T17:40:04Z",
    "nvd_published_at" : "2020-04-07T13:15:00Z"
  }
}