CVE-2020-2106: Code coverage api Cross-Site Scripting Vulnerability

MODERATE
Advisory Identifier: GHSA-xg77-xqhq-crpr
Share
CVSS 5.4
CWE-79
Published
Advisory Summary

CVE-2020-2106 is a MODERATE (CVSS 5.4) cross-site scripting vulnerability (CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) affecting Code coverage api libraries in the Maven ecosystem. The issue involves stored xss vulnerability in code coverage api plugin. Remediation is available by upgrading affected packages to version 1.1.3.

CVE-2020-2106 at a Glance

CVE Identifier CVE-2020-2106
GHSA Identifier GHSA-xg77-xqhq-crpr
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 Code coverage api
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-2020-2106

To remediate this vulnerability, upgrade all affected Code coverage api dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

io.jenkins.plugins:code-coverage-api fixed: 1.1.3 
<dependency>
    <groupId>io.jenkins.plugins</groupId>
    <artifactId>code-coverage-api</artifactId>
    <version>1.1.3</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=io.jenkins.plugins

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2020-2106, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree -Dincludes=io.jenkins.plugins

Analyze the terminal output to locate any version of Code coverage api in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.1.3), your application is affected.

Note: The mvn dependency:tree -Dincludes=io.jenkins.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 Code coverage api, 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

Code Coverage API Plugin 1.1.2 and earlier does not escape the filename of the coverage report used in its view. This results in a stored cross-site scripting vulnerability that can be exploited by users able to change the job configuration. Code Coverage API Plugin 1.1.3 escapes the filename of the coverage report used in its view.

CVE-2020-2106 Affected Code coverage api Versions

1 component(s)
Fixed Versions:
1.1.3
Product / Package Ecosystem Affected Versions Fixed Version
io.jenkins.plugins:code-coverage-api
maven/io.jenkins.plugins/code-coverage-api
Maven
< 1.1.3
1.1.3

References

NVD — CVE-2020-2106 NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-2106
Security Fix Commit FIX COMMIT
https://github.com/jenkinsci/code-coverage-api-plugin/commit/24921da6d625c4deb259049446dc2b45b1da4603
Code coverage api Source Repository REPOSITORY
https://github.com/jenkinsci/code-coverage-api-plugin
Code coverage api Security Information SECURITY
https://jenkins.io/security/advisory/2020-01-29/#SECURITY-1680
Code coverage api Security Information SECURITY
http://www.openwall.com/lists/oss-security/2020/01/29/1

Frequently Asked Questions

What is CVE-2020-2106?
CVE-2020-2106 is a security vulnerability in Code coverage api involving Stored XSS vulnerability in Code Coverage API Plugin under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting').
Which Code coverage api versions are affected?
Affected versions include releases prior to 1.1.3 across affected packages: io.jenkins.plugins:code-coverage-api.
What version fixes CVE-2020-2106?
Upgrading to 1.1.3 (or the latest patched release for your respective branch) resolves the vulnerability.
Is code-coverage-api affected?
Yes, io.jenkins.plugins:code-coverage-api is affected in releases prior to 1.1.3. Upgrade your dependency to 1.1.3 or later.
What is the CVSS score of CVE-2020-2106?
CVE-2020-2106 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-2020-2106?
CVE-2020-2106 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-2020-2106?
Run the dependency tree command: 'mvn dependency:tree -Dincludes=io.jenkins.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-xg77-xqhq-crpr",
  "modified" : "2022-12-19T21:14:50Z",
  "published" : "2022-05-24T17:07:41Z",
  "aliases" : [ "CVE-2020-2106" ],
  "summary" : "Stored XSS vulnerability in Code Coverage API Plugin",
  "details" : "Code Coverage API Plugin 1.1.2 and earlier does not escape the filename of the coverage report used in its view.\n\nThis results in a stored cross-site scripting vulnerability that can be exploited by users able to change the job configuration.\n\nCode Coverage API Plugin 1.1.3 escapes the filename of the coverage report used in its view.",
  "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" : "io.jenkins.plugins:code-coverage-api"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.1.3"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 1.1.2"
    }
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2020-2106"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/jenkinsci/code-coverage-api-plugin/commit/24921da6d625c4deb259049446dc2b45b1da4603"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/jenkinsci/code-coverage-api-plugin"
  }, {
    "type" : "WEB",
    "url" : "https://jenkins.io/security/advisory/2020-01-29/#SECURITY-1680"
  }, {
    "type" : "WEB",
    "url" : "http://www.openwall.com/lists/oss-security/2020/01/29/1"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-12-19T21:14:50Z",
    "nvd_published_at" : "2020-01-29T16:15:00Z"
  }
}