CVE-2018-1000149: Ansible Jenkins Ansible Plugin Man Vulnerability

MODERATE
Advisory Identifier: GHSA-322x-jv5h-cvjh
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CVSS 5.6
Published
Advisory Summary

CVE-2018-1000149 is a MODERATE (CVSS 5.6) jenkins ansible plugin man vulnerability (General Security Weakness) affecting Ansible libraries in the Maven ecosystem. The issue involves jenkins ansible plugin man in the middle vulnerability. Remediation is available by upgrading affected packages to version 1.0.

CVE-2018-1000149 at a Glance

CVE Identifier CVE-2018-1000149
GHSA Identifier GHSA-322x-jv5h-cvjh
Severity MODERATE
CVSS v3.1 Base Score 5.6
CWE Classification General Security Weakness
Affected Product Ansible
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 5.6

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L).

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

How to Fix CVE-2018-1000149

To remediate this vulnerability, upgrade all affected Ansible 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:ansible fixed: 1.0 
<dependency>
    <groupId>org.jenkins-ci.plugins</groupId>
    <artifactId>ansible</artifactId>
    <version>1.0</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-2018-1000149, 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 Ansible in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.0), 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 General Security Weakness. In Ansible, 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

A man in the middle vulnerability exists in Jenkins Ansible Plugin 0.8 and older in `AbstractAnsibleInvocation.java`, `AnsibleAdHocCommandBuilder.java`, `AnsibleAdHocCommandInvocationTest.java`, `AnsibleContext.java`, `AnsibleJobDslExtension.java`, `AnsiblePlaybookBuilder.java`, `AnsiblePlaybookStep.java` that disables host key verification by default. Ansible Plugin 1.0 now enables host key verification by default, adding options allowing users to opt out.

CVE-2018-1000149 Affected Ansible Versions

1 component(s)
Fixed Versions:
1.0
Product / Package Ecosystem Affected Versions Fixed Version
org.jenkins-ci.plugins:ansible
maven/org.jenkins-ci.plugins/ansible
Maven
< 1.0
1.0

References

NVD — CVE-2018-1000149 NVD
https://nvd.nist.gov/vuln/detail/CVE-2018-1000149
Security Fix Commit FIX COMMIT
https://github.com/jenkinsci/ansible-plugin/commit/06d30e5b626a978e258a7f4ab473cd7f53a7cba7
Ansible Security Information SECURITY
https://jenkins.io/security/advisory/2018-03-26/#SECURITY-630

Frequently Asked Questions

What is CVE-2018-1000149?
CVE-2018-1000149 is a security vulnerability in Ansible involving Jenkins Ansible Plugin man in the middle vulnerability under General Security Weakness.
Which Ansible versions are affected?
Affected versions include releases prior to 1.0 across affected packages: org.jenkins-ci.plugins:ansible.
What version fixes CVE-2018-1000149?
Upgrading to 1.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is ansible affected?
Yes, org.jenkins-ci.plugins:ansible is affected in releases prior to 1.0. Upgrade your dependency to 1.0 or later.
What is the CVSS score of CVE-2018-1000149?
CVE-2018-1000149 has a CVSS v3.1 base score of 5.6 (MODERATE) with vector string CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L.
What CWE is associated with CVE-2018-1000149?
CVE-2018-1000149 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2018-1000149?
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-322x-jv5h-cvjh",
  "modified" : "2022-12-06T21:53:17Z",
  "published" : "2022-05-13T01:18:44Z",
  "aliases" : [ "CVE-2018-1000149" ],
  "summary" : "Jenkins Ansible Plugin man in the middle vulnerability",
  "details" : "A man in the middle vulnerability exists in Jenkins Ansible Plugin 0.8 and older in `AbstractAnsibleInvocation.java`, `AnsibleAdHocCommandBuilder.java`, `AnsibleAdHocCommandInvocationTest.java`, `AnsibleContext.java`, `AnsibleJobDslExtension.java`, `AnsiblePlaybookBuilder.java`, `AnsiblePlaybookStep.java` that disables host key verification by default. Ansible Plugin 1.0 now enables host key verification by default, adding options allowing users to opt out.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.jenkins-ci.plugins:ansible"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.0"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 0.8"
    }
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2018-1000149"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/jenkinsci/ansible-plugin/commit/06d30e5b626a978e258a7f4ab473cd7f53a7cba7"
  }, {
    "type" : "WEB",
    "url" : "https://jenkins.io/security/advisory/2018-03-26/#SECURITY-630"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-12-06T21:53:17Z",
    "nvd_published_at" : "2018-04-05T13:29:00Z"
  }
}