CVE-2020-2112: Git parameter Cross-Site Scripting Vulnerability

MODERATE
Advisory Identifier: GHSA-hw26-fw67-qxm9
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CVSS 5.4
CWE-79
Published
Advisory Summary

CVE-2020-2112 is a MODERATE (CVSS 5.4) cross-site scripting vulnerability (CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) affecting Git parameter libraries in the Maven ecosystem. The issue involves jenkins git parameter plugin vulnerable to stored cross-site scripting (xss). Remediation is available by upgrading affected packages to version 0.9.12.

CVE-2020-2112 at a Glance

CVE Identifier CVE-2020-2112
GHSA Identifier GHSA-hw26-fw67-qxm9
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 Git parameter
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:3.1/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-2020-2112

To remediate this vulnerability, upgrade all affected Git parameter 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.tools:git-parameter fixed: 0.9.12 
<dependency>
    <groupId>org.jenkins-ci.tools</groupId>
    <artifactId>git-parameter</artifactId>
    <version>0.9.12</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.tools

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2020-2112, inspect your build dependencies using the Maven Dependency Plugin:

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

Analyze the terminal output to locate any version of Git parameter in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.9.12), your application is affected.

Note: The mvn dependency:tree -Dincludes=org.jenkins-ci.tools 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 Git parameter, 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 Git Parameter Plugin 0.9.11 and earlier does not escape the parameter name shown on the UI, resulting in a stored cross-site scripting vulnerability exploitable by users with Job/Configure permission.

CVE-2020-2112 Affected Git parameter Versions

1 component(s)
Fixed Versions:
0.9.12
Product / Package Ecosystem Affected Versions Fixed Version
org.jenkins-ci.tools:git-parameter
maven/org.jenkins-ci.tools/git-parameter
Maven
< 0.9.12
0.9.12

References

NVD — CVE-2020-2112 NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-2112
Security Fix Commit FIX COMMIT
https://github.com/jenkinsci/git-parameter-plugin/commit/6fd933c5b1af4ec5dc27edfe2c74931dbff69012
Git parameter Source Repository REPOSITORY
https://github.com/jenkinsci/git-parameter-plugin
Git parameter Security Information SECURITY
https://jenkins.io/security/advisory/2020-02-12/#SECURITY-1709
Git parameter Security Information SECURITY
http://www.openwall.com/lists/oss-security/2020/02/12/3

Frequently Asked Questions

What is CVE-2020-2112?
CVE-2020-2112 is a security vulnerability in Git parameter involving Jenkins Git Parameter Plugin vulnerable to Stored cross-site scripting (XSS) under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting').
Which Git parameter versions are affected?
Affected versions include releases prior to 0.9.12 across affected packages: org.jenkins-ci.tools:git-parameter.
What version fixes CVE-2020-2112?
Upgrading to 0.9.12 (or the latest patched release for your respective branch) resolves the vulnerability.
Is git-parameter affected?
Yes, org.jenkins-ci.tools:git-parameter is affected in releases prior to 0.9.12. Upgrade your dependency to 0.9.12 or later.
What is the CVSS score of CVE-2020-2112?
CVE-2020-2112 has a CVSS v3.1 base score of 5.4 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.
What CWE is associated with CVE-2020-2112?
CVE-2020-2112 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-2020-2112?
Run the dependency tree command: 'mvn dependency:tree -Dincludes=org.jenkins-ci.tools'. 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-hw26-fw67-qxm9",
  "modified" : "2023-01-06T17:05:22Z",
  "published" : "2022-05-24T17:08:46Z",
  "aliases" : [ "CVE-2020-2112" ],
  "summary" : "Jenkins Git Parameter Plugin vulnerable to Stored cross-site scripting (XSS)",
  "details" : "Jenkins Git Parameter Plugin 0.9.11 and earlier does not escape the parameter name shown on the UI, resulting in a stored cross-site scripting vulnerability exploitable by users with Job/Configure permission.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.jenkins-ci.tools:git-parameter"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.9.12"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 0.9.11"
    }
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2020-2112"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/jenkinsci/git-parameter-plugin/commit/6fd933c5b1af4ec5dc27edfe2c74931dbff69012"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/jenkinsci/git-parameter-plugin"
  }, {
    "type" : "WEB",
    "url" : "https://jenkins.io/security/advisory/2020-02-12/#SECURITY-1709"
  }, {
    "type" : "WEB",
    "url" : "http://www.openwall.com/lists/oss-security/2020/02/12/3"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-01-06T17:05:22Z",
    "nvd_published_at" : "2020-02-12T15:15:00Z"
  }
}