CVE-2018-1999040: Kubernetes Exposure Of Sensitive Information Vulnerability

HIGH
Advisory Identifier: GHSA-fqg2-c97r-rqcj
Share
CVSS 8.8
CWE-200
Published
Advisory Summary

CVE-2018-1999040 is a HIGH (CVSS 8.8) exposure of sensitive information vulnerability (CWE-200: Exposure of Sensitive Information to an Unauthorized Actor) affecting Kubernetes libraries in the Maven ecosystem. The issue involves exposure of sensitive information in jenkins kubernetes plugin. Remediation is available by upgrading affected packages to version 1.10.2.

CVE-2018-1999040 at a Glance

CVE Identifier CVE-2018-1999040
GHSA Identifier GHSA-fqg2-c97r-rqcj
Severity HIGH
CVSS v3.1 Base Score 8.8
CWE Classification CWE-200: Exposure of Sensitive Information to an Unauthorized Actor
Affected Product Kubernetes
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 8.8

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:H/A:H).

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 High (I:H)
Availability High (A:H)

How to Fix CVE-2018-1999040

To remediate this vulnerability, upgrade all affected Kubernetes 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.csanchez.jenkins.plugins:kubernetes fixed: 1.10.2 
<dependency>
    <groupId>org.csanchez.jenkins.plugins</groupId>
    <artifactId>kubernetes</artifactId>
    <version>1.10.2</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.csanchez.jenkins.plugins

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2018-1999040, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree -Dincludes=org.csanchez.jenkins.plugins

Analyze the terminal output to locate any version of Kubernetes in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.10.2), your application is affected.

Note: The mvn dependency:tree -Dincludes=org.csanchez.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-200: Exposure of Sensitive Information to an Unauthorized Actor, where the product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. In Kubernetes, 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

An exposure of sensitive information vulnerability exists in Jenkins Kubernetes Plugin 1.10.1 and earlier in KubernetesCloud.java that allows attackers to capture credentials with a known credentials ID stored in Jenkins.

CVE-2018-1999040 Affected Kubernetes Versions

1 component(s)
Fixed Versions:
1.10.2
Product / Package Ecosystem Affected Versions Fixed Version
org.csanchez.jenkins.plugins:kubernetes
maven/org.csanchez.jenkins.plugins/kubernetes
Maven
< 1.10.2
1.10.2

References

NVD — CVE-2018-1999040 NVD
https://nvd.nist.gov/vuln/detail/CVE-2018-1999040
Security Fix Commit FIX COMMIT
https://github.com/jenkinsci/kubernetes-plugin/commit/bf7a47847dfb5ef2d1e2a537e2eb9f28063988c6
Kubernetes Security Information SECURITY
https://jenkins.io/security/advisory/2018-07-30/#SECURITY-1016

Frequently Asked Questions

What is CVE-2018-1999040?
CVE-2018-1999040 is a security vulnerability in Kubernetes involving Exposure of Sensitive Information in Jenkins Kubernetes Plugin under CWE-200: Exposure of Sensitive Information to an Unauthorized Actor.
Which Kubernetes versions are affected?
Affected versions include releases prior to 1.10.2 across affected packages: org.csanchez.jenkins.plugins:kubernetes.
What version fixes CVE-2018-1999040?
Upgrading to 1.10.2 (or the latest patched release for your respective branch) resolves the vulnerability.
Is kubernetes affected?
Yes, org.csanchez.jenkins.plugins:kubernetes is affected in releases prior to 1.10.2. Upgrade your dependency to 1.10.2 or later.
What is the CVSS score of CVE-2018-1999040?
CVE-2018-1999040 has a CVSS v3.1 base score of 8.8 (HIGH) with vector string CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2018-1999040?
CVE-2018-1999040 is classified under CWE-200: Exposure of Sensitive Information to an Unauthorized Actor (The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.).
How can I check Maven dependencies for CVE-2018-1999040?
Run the dependency tree command: 'mvn dependency:tree -Dincludes=org.csanchez.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-fqg2-c97r-rqcj",
  "modified" : "2022-11-03T23:19:45Z",
  "published" : "2022-05-13T01:50:55Z",
  "aliases" : [ "CVE-2018-1999040" ],
  "summary" : "Exposure of Sensitive Information in Jenkins Kubernetes Plugin",
  "details" : "An exposure of sensitive information vulnerability exists in Jenkins Kubernetes Plugin 1.10.1 and earlier in KubernetesCloud.java that allows attackers to capture credentials with a known credentials ID stored in Jenkins.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.csanchez.jenkins.plugins:kubernetes"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.10.2"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 1.10.1"
    }
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2018-1999040"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/jenkinsci/kubernetes-plugin/commit/bf7a47847dfb5ef2d1e2a537e2eb9f28063988c6"
  }, {
    "type" : "WEB",
    "url" : "https://jenkins.io/security/advisory/2018-07-30/#SECURITY-1016"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-200" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-11-03T23:19:45Z",
    "nvd_published_at" : "2018-08-01T13:29:00Z"
  }
}