CVE-2019-16559: Websphere deployer Jenkins WebSphere Deployer Plugin Missing Vulnerability

MODERATE
Advisory Identifier: GHSA-mxf8-grm7-mvqw
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CVSS 5.4
CWE-276
Published
Advisory Summary

CVE-2019-16559 is a MODERATE (CVSS 5.4) jenkins websphere deployer plugin missing vulnerability (CWE-276: Incorrect Default Permissions) affecting Websphere deployer libraries in the Maven ecosystem. The issue involves jenkins websphere deployer plugin missing permission check. Remediation is available in the latest vendor maintenance releases.

CVE-2019-16559 at a Glance

CVE Identifier CVE-2019-16559
GHSA Identifier GHSA-mxf8-grm7-mvqw
Severity MODERATE
CVSS v3.1 Base Score 5.4
CWE Classification CWE-276: Incorrect Default Permissions
Affected Product Websphere deployer
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 5.4

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/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 Low (C:L)
Integrity Low (I:L)
Availability None (A:N)

How to Fix CVE-2019-16559

To remediate this vulnerability, upgrade all affected Websphere deployer 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:websphere-deployer fixed: Latest secure release 
<dependency>
    <groupId>org.jenkins-ci.plugins</groupId>
    <artifactId>websphere-deployer</artifactId>
    <version>Latest secure release</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-2019-16559, 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 Websphere deployer in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than the patched release), 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-276: Incorrect Default Permissions, where during installation, installed file permissions are set to allow anyone to modify those files. In Websphere deployer, 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

Jenkins WebSphere Deployer Plugin 1.6.1 and earlier does not perform permission checks in methods performing form validation. This allows users with Overall/Read access to perform connection tests, determine whether files with an attacker-specified path exist on the Jenkins controller file system, and obtain limited information about the Jenkins and plugin configuration based on the responses. The latter include the ability to set plugin configuration options. Additionally, these form validation methods do not require POST requests, resulting in a CSRF vulnerability. As of publication of this advisory, there is no fix.

CVE-2019-16559 Affected Websphere deployer Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
org.jenkins-ci.plugins:websphere-deployer
maven/org.jenkins-ci.plugins/websphere-deployer
Maven
≤ 1.6.1

References

NVD — CVE-2019-16559 NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-16559
Websphere deployer Security Information SECURITY
https://jenkins.io/security/advisory/2019-12-17/#SECURITY-1371
Websphere deployer Security Information SECURITY
http://www.openwall.com/lists/oss-security/2019/12/17/1

Frequently Asked Questions

What is CVE-2019-16559?
CVE-2019-16559 is a security vulnerability in Websphere deployer involving Jenkins WebSphere Deployer Plugin missing permission check under CWE-276: Incorrect Default Permissions.
Which Websphere deployer versions are affected?
Affected versions include releases prior to current release patches across affected packages: org.jenkins-ci.plugins:websphere-deployer.
What version fixes CVE-2019-16559?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is websphere-deployer affected?
Yes, org.jenkins-ci.plugins:websphere-deployer is affected in releases prior to Latest secure release. Upgrade your dependency to Latest secure release or later.
What is the CVSS score of CVE-2019-16559?
CVE-2019-16559 has a CVSS v3.1 base score of 5.4 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N.
What CWE is associated with CVE-2019-16559?
CVE-2019-16559 is classified under CWE-276: Incorrect Default Permissions (During installation, installed file permissions are set to allow anyone to modify those files.).
How can I check Maven dependencies for CVE-2019-16559?
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-mxf8-grm7-mvqw",
  "modified" : "2023-10-27T17:43:32Z",
  "published" : "2022-05-24T17:03:47Z",
  "aliases" : [ "CVE-2019-16559" ],
  "summary" : "Jenkins WebSphere Deployer Plugin missing permission check",
  "details" : "Jenkins WebSphere Deployer Plugin 1.6.1 and earlier does not perform permission checks in methods performing form validation. This allows users with Overall/Read access to perform connection tests, determine whether files with an attacker-specified path exist on the Jenkins controller file system, and obtain limited information about the Jenkins and plugin configuration based on the responses. The latter include the ability to set plugin configuration options.\n\nAdditionally, these form validation methods do not require POST requests, resulting in a CSRF vulnerability.\n\nAs of publication of this advisory, there is no fix.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.jenkins-ci.plugins:websphere-deployer"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "1.6.1"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2019-16559"
  }, {
    "type" : "WEB",
    "url" : "https://jenkins.io/security/advisory/2019-12-17/#SECURITY-1371"
  }, {
    "type" : "WEB",
    "url" : "http://www.openwall.com/lists/oss-security/2019/12/17/1"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-276" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-10-27T17:43:32Z",
    "nvd_published_at" : "2019-12-17T15:15:00Z"
  }
}