CVE-2020-2143: Logstash Credentials Transmitted Vulnerability

LOW
Advisory Identifier: GHSA-5pg8-f89x-wjcx
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CVSS 3.1
CWE-319
Published
Advisory Summary

CVE-2020-2143 is a LOW (CVSS 3.1) credentials transmitted vulnerability (CWE-319: Cleartext Transmission of Sensitive Information) affecting Logstash libraries in the Maven ecosystem. The issue involves credentials transmitted in plain text by jenkins logstash plugin. Remediation is available by upgrading affected packages to version 2.3.2.

CVE-2020-2143 at a Glance

CVE Identifier CVE-2020-2143
GHSA Identifier GHSA-5pg8-f89x-wjcx
Severity LOW
CVSS v3.1 Base Score 3.1
CWE Classification CWE-319: Cleartext Transmission of Sensitive Information
Affected Product Logstash
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 3.1

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N).

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

How to Fix CVE-2020-2143

To remediate this vulnerability, upgrade all affected Logstash 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:logstash fixed: 2.3.2 
<dependency>
    <groupId>org.jenkins-ci.plugins</groupId>
    <artifactId>logstash</artifactId>
    <version>2.3.2</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-2020-2143, 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 Logstash in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.3.2), 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-319: Cleartext Transmission of Sensitive Information, where the product transmits sensitive or security-critical data in cleartext in a communication channel that can be sniffed by unauthorized actors. In Logstash, 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

Logstash Plugin stores credentials in its global configuration file `jenkins.plugins.logstash.LogstashConfiguration.xml` on the Jenkins controller as part of its configuration. While the credentials are stored encrypted on disk, they are transmitted in plain text as part of the configuration form by Logstash Plugin 2.3.1 and earlier. This can result in exposure of the credential through browser extensions, cross-site scripting vulnerabilities, and similar situations. Logstash Plugin 2.3.2 transmits the credentials in its global configuration encrypted.

CVE-2020-2143 Affected Logstash Versions

1 component(s)
Fixed Versions:
2.3.2
Product / Package Ecosystem Affected Versions Fixed Version
org.jenkins-ci.plugins:logstash
maven/org.jenkins-ci.plugins/logstash
Maven
< 2.3.2
2.3.2

References

NVD — CVE-2020-2143 NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-2143
Security Fix Commit FIX COMMIT
https://github.com/jenkinsci/logstash-plugin/commit/b42d5c116473d11c79ebd2ff24e2643b9bce14d6
Logstash Source Repository REPOSITORY
https://github.com/jenkinsci/logstash-plugin
Logstash Security Information SECURITY
https://jenkins.io/security/advisory/2020-03-09/#SECURITY-1516
Logstash Security Information SECURITY
http://www.openwall.com/lists/oss-security/2020/03/09/1

Frequently Asked Questions

What is CVE-2020-2143?
CVE-2020-2143 is a security vulnerability in Logstash involving Credentials transmitted in plain text by Jenkins Logstash Plugin under CWE-319: Cleartext Transmission of Sensitive Information.
Which Logstash versions are affected?
Affected versions include releases prior to 2.3.2 across affected packages: org.jenkins-ci.plugins:logstash.
What version fixes CVE-2020-2143?
Upgrading to 2.3.2 (or the latest patched release for your respective branch) resolves the vulnerability.
Is logstash affected?
Yes, org.jenkins-ci.plugins:logstash is affected in releases prior to 2.3.2. Upgrade your dependency to 2.3.2 or later.
What is the CVSS score of CVE-2020-2143?
CVE-2020-2143 has a CVSS v3.1 base score of 3.1 (LOW) with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N.
What CWE is associated with CVE-2020-2143?
CVE-2020-2143 is classified under CWE-319: Cleartext Transmission of Sensitive Information (The product transmits sensitive or security-critical data in cleartext in a communication channel that can be sniffed by unauthorized actors.).
How can I check Maven dependencies for CVE-2020-2143?
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-5pg8-f89x-wjcx",
  "modified" : "2023-01-14T05:22:47Z",
  "published" : "2022-05-24T17:10:28Z",
  "aliases" : [ "CVE-2020-2143" ],
  "summary" : "Credentials transmitted in plain text by Jenkins Logstash Plugin",
  "details" : "Logstash Plugin stores credentials in its global configuration file `jenkins.plugins.logstash.LogstashConfiguration.xml` on the Jenkins controller as part of its configuration.\n\nWhile the credentials are stored encrypted on disk, they are transmitted in plain text as part of the configuration form by Logstash Plugin 2.3.1 and earlier. This can result in exposure of the credential through browser extensions, cross-site scripting vulnerabilities, and similar situations.\n\nLogstash Plugin 2.3.2 transmits the credentials in its global configuration encrypted.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.jenkins-ci.plugins:logstash"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "2.3.2"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2020-2143"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/jenkinsci/logstash-plugin/commit/b42d5c116473d11c79ebd2ff24e2643b9bce14d6"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/jenkinsci/logstash-plugin"
  }, {
    "type" : "WEB",
    "url" : "https://jenkins.io/security/advisory/2020-03-09/#SECURITY-1516"
  }, {
    "type" : "WEB",
    "url" : "http://www.openwall.com/lists/oss-security/2020/03/09/1"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-319" ],
    "severity" : "LOW",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-01-14T05:22:47Z",
    "nvd_published_at" : "2020-03-09T16:15:00Z"
  }
}