CVE-2018-1000176: Email ext Jenkins Email Extension Plugin Showed Vulnerability

MODERATE
Advisory Identifier: GHSA-gwxm-wqpq-w539
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CVSS 6.5
CWE-200
Published
Advisory Summary

CVE-2018-1000176 is a MODERATE (CVSS 6.5) jenkins email extension plugin showed vulnerability (CWE-200: Exposure of Sensitive Information to an Unauthorized Actor) affecting Email ext libraries in the Maven ecosystem. The issue involves jenkins email extension plugin showed plain text smtp password in configuration form field. Remediation is available by upgrading affected packages to version 2.62.

CVE-2018-1000176 at a Glance

CVE Identifier CVE-2018-1000176
GHSA Identifier GHSA-gwxm-wqpq-w539
Severity MODERATE
CVSS v3.1 Base Score 6.5
CWE Classification CWE-200: Exposure of Sensitive Information to an Unauthorized Actor
Affected Product Email ext
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 6.5

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:N/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 None (I:N)
Availability None (A:N)

How to Fix CVE-2018-1000176

To remediate this vulnerability, upgrade all affected Email ext 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:email-ext fixed: 2.62 
<dependency>
    <groupId>org.jenkins-ci.plugins</groupId>
    <artifactId>email-ext</artifactId>
    <version>2.62</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-2018-1000176, 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 Email ext in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.62), 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-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 Email ext, 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 Email Extension Plugin 2.61 and older in src/main/resources/hudson/plugins/emailext/ExtendedEmailPublisher/global.groovy and ExtendedEmailPublisherDescriptor.java that allows attackers with control of a Jenkins administrator's web browser (e.g. malicious extension) to retrieve the configured SMTP password.

CVE-2018-1000176 Affected Email ext Versions

1 component(s)
Fixed Versions:
2.62
Product / Package Ecosystem Affected Versions Fixed Version
org.jenkins-ci.plugins:email-ext
maven/org.jenkins-ci.plugins/email-ext
Maven
< 2.62
2.62

References

NVD — CVE-2018-1000176 NVD
https://nvd.nist.gov/vuln/detail/CVE-2018-1000176
Email ext Security Information SECURITY
https://jenkins.io/security/advisory/2018-04-16

Frequently Asked Questions

What is CVE-2018-1000176?
CVE-2018-1000176 is a security vulnerability in Email ext involving Jenkins Email Extension Plugin showed plain text SMTP password in configuration form field under CWE-200: Exposure of Sensitive Information to an Unauthorized Actor.
Which Email ext versions are affected?
Affected versions include releases prior to 2.62 across affected packages: org.jenkins-ci.plugins:email-ext.
What version fixes CVE-2018-1000176?
Upgrading to 2.62 (or the latest patched release for your respective branch) resolves the vulnerability.
Is email-ext affected?
Yes, org.jenkins-ci.plugins:email-ext is affected in releases prior to 2.62. Upgrade your dependency to 2.62 or later.
What is the CVSS score of CVE-2018-1000176?
CVE-2018-1000176 has a CVSS v3.1 base score of 6.5 (MODERATE) with vector string CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.
What CWE is associated with CVE-2018-1000176?
CVE-2018-1000176 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-2018-1000176?
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-gwxm-wqpq-w539",
  "modified" : "2024-01-30T22:35:37Z",
  "published" : "2022-05-14T03:18:39Z",
  "aliases" : [ "CVE-2018-1000176" ],
  "summary" : "Jenkins Email Extension Plugin showed plain text SMTP password in configuration form field",
  "details" : "An exposure of sensitive information vulnerability exists in Jenkins Email Extension Plugin 2.61 and older in src/main/resources/hudson/plugins/emailext/ExtendedEmailPublisher/global.groovy and ExtendedEmailPublisherDescriptor.java that allows attackers with control of a Jenkins administrator's web browser (e.g. malicious extension) to retrieve the configured SMTP password.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.jenkins-ci.plugins:email-ext"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "2.62"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 2.61"
    }
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2018-1000176"
  }, {
    "type" : "WEB",
    "url" : "https://jenkins.io/security/advisory/2018-04-16"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-200" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-01-30T22:35:37Z",
    "nvd_published_at" : "2018-05-08T15:29:00Z"
  }
}