CVE-2020-2172: Code coverage api XXE Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-cmgm-q8hf-p7jc
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CVSS 7.1
CWE-776 CWE-611
Published
Advisory Summary

CVE-2020-2172 is a HIGH (CVSS 7.1) xxe vulnerability vulnerability (CWE-776: Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion')) affecting Code coverage api libraries in the Maven ecosystem. The issue involves xxe vulnerability in jenkins code coverage api plugin. Remediation is available by upgrading affected packages to version 1.1.5.

CVE-2020-2172 at a Glance

CVE Identifier CVE-2020-2172
GHSA Identifier GHSA-cmgm-q8hf-p7jc
Severity HIGH
CVSS v3.1 Base Score 7.1
CWE Classification CWE-776: Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion')
Affected Product Code coverage api
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 7.1

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

How to Fix CVE-2020-2172

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: 1.1.5 
<dependency>
    <groupId>io.jenkins.plugins</groupId>
    <artifactId>code-coverage-api</artifactId>
    <version>1.1.5</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-2020-2172, 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 1.1.5), 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-776: Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion'), where the product uses xml documents and allows their structure to be defined with a document type definition (dtd), but it does not properly control the number of recursive definitions of entities. 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 1.1.4 and earlier does not configure its XML parser to prevent XML external entity (XXE) attacks. This allows a user able to control the input files for the \"Publish Coverage Report\" post-build step to have Jenkins parse a crafted file that uses external entities for extraction of secrets from the Jenkins controller or server-side request forgery. Code Coverage API Plugin 1.1.5 disables external entity resolution for its XML parser.

CVE-2020-2172 Affected Code coverage api Versions

1 component(s)
Fixed Versions:
1.1.5
Product / Package Ecosystem Affected Versions Fixed Version
io.jenkins.plugins:code-coverage-api
maven/io.jenkins.plugins/code-coverage-api
Maven
< 1.1.5
1.1.5

References

NVD — CVE-2020-2172 NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-2172
Security Fix Commit FIX COMMIT
https://github.com/jenkinsci/code-coverage-api-plugin/commit/f0ef84c25f7bc4de4e722e994de57d238225834c
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/2020-04-07/#SECURITY-1699
Code coverage api Security Information SECURITY
http://www.openwall.com/lists/oss-security/2020/04/07/3

Frequently Asked Questions

What is CVE-2020-2172?
CVE-2020-2172 is a security vulnerability in Code coverage api involving XXE vulnerability in Jenkins Code Coverage API Plugin under CWE-776: Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion').
Which Code coverage api versions are affected?
Affected versions include releases prior to 1.1.5 across affected packages: io.jenkins.plugins:code-coverage-api.
What version fixes CVE-2020-2172?
Upgrading to 1.1.5 (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 1.1.5. Upgrade your dependency to 1.1.5 or later.
What is the CVSS score of CVE-2020-2172?
CVE-2020-2172 has a CVSS v3.1 base score of 7.1 (HIGH) with vector string CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N.
What CWE is associated with CVE-2020-2172?
CVE-2020-2172 is classified under CWE-776: Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion') (The product uses XML documents and allows their structure to be defined with a Document Type Definition (DTD), but it does not properly control the number of recursive definitions of entities.).
How can I check Maven dependencies for CVE-2020-2172?
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-cmgm-q8hf-p7jc",
  "modified" : "2022-12-20T14:35:40Z",
  "published" : "2022-05-24T17:13:39Z",
  "aliases" : [ "CVE-2020-2172" ],
  "summary" : "XXE vulnerability in Jenkins Code Coverage API Plugin",
  "details" : "Code Coverage API Plugin 1.1.4 and earlier does not configure its XML parser to prevent XML external entity (XXE) attacks. This allows a user able to control the input files for the \\\"Publish Coverage Report\\\" post-build step to have Jenkins parse a crafted file that uses external entities for extraction of secrets from the Jenkins controller or server-side request forgery.\n\nCode Coverage API Plugin 1.1.5 disables external entity resolution for its XML parser.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "io.jenkins.plugins:code-coverage-api"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.1.5"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2020-2172"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/jenkinsci/code-coverage-api-plugin/commit/f0ef84c25f7bc4de4e722e994de57d238225834c"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/jenkinsci/code-coverage-api-plugin"
  }, {
    "type" : "WEB",
    "url" : "https://jenkins.io/security/advisory/2020-04-07/#SECURITY-1699"
  }, {
    "type" : "WEB",
    "url" : "http://www.openwall.com/lists/oss-security/2020/04/07/3"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-611", "CWE-776" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-12-20T14:35:40Z",
    "nvd_published_at" : "2020-04-07T13:15:00Z"
  }
}