CVE-2019-1003043: Slack Jenkins Slack Notification Plugin Missing Vulnerability

MODERATE
Advisory Identifier: GHSA-22xp-7rcx-xp34
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CVSS 4.2
CWE-862
Published
Advisory Summary

CVE-2019-1003043 is a MODERATE (CVSS 4.2) jenkins slack notification plugin missing vulnerability (CWE-862: Missing Authorization) affecting Slack libraries in the Maven ecosystem. The issue involves jenkins slack notification plugin missing permission check. Remediation is available by upgrading affected packages to version 2.20.

CVE-2019-1003043 at a Glance

CVE Identifier CVE-2019-1003043
GHSA Identifier GHSA-22xp-7rcx-xp34
Severity MODERATE
CVSS v3.1 Base Score 4.2
CWE Classification CWE-862: Missing Authorization
Affected Product Slack
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 4.2

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

Attack Vector Network (AV:N)
Attack Complexity High (AC:H)
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-2019-1003043

To remediate this vulnerability, upgrade all affected Slack 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:slack fixed: 2.20 
<dependency>
    <groupId>org.jenkins-ci.plugins</groupId>
    <artifactId>slack</artifactId>
    <version>2.20</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-2019-1003043, 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 Slack in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.20), 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-862: Missing Authorization, where the product does not perform an authorization check when an actor attempts to access a resource or perform an action. In Slack, 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 Slack Notification Plugin did not perform permission checks on a method implementing form validation. This allowed users with Overall/Read access to Jenkins to connect to an attacker-specified URL using attacker-specified credentials IDs obtained through another method, capturing credentials stored in Jenkins. Additionally, this form validation method did not require POST requests, resulting in a cross-site request forgery vulnerability. This form validation method now requires POST requests and Overall/Administer (for global configuration) or Item/Configure permissions (for job configuration).

CVE-2019-1003043 Affected Slack Versions

1 component(s)
Fixed Versions:
2.20
Product / Package Ecosystem Affected Versions Fixed Version
org.jenkins-ci.plugins:slack
maven/org.jenkins-ci.plugins/slack
Maven
< 2.20
2.20

References

NVD — CVE-2019-1003043 NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-1003043
Security Fix Commit FIX COMMIT
https://github.com/jenkinsci/slack-plugin/commit/0268bbefdcc283effd27be5318770f7e75c6f102
Slack Source Repository REPOSITORY
https://github.com/jenkinsci/slack-plugin
Slack Security Information SECURITY
https://jenkins.io/security/advisory/2019-03-25/#SECURITY-976
Slack Security Information SECURITY
https://web.archive.org/web/20200227082607/http://www.securityfocus.com/bid/107628
Slack Security Information SECURITY
http://www.openwall.com/lists/oss-security/2019/03/28/2

Frequently Asked Questions

What is CVE-2019-1003043?
CVE-2019-1003043 is a security vulnerability in Slack involving Jenkins Slack Notification Plugin missing permission check under CWE-862: Missing Authorization.
Which Slack versions are affected?
Affected versions include releases prior to 2.20 across affected packages: org.jenkins-ci.plugins:slack.
What version fixes CVE-2019-1003043?
Upgrading to 2.20 (or the latest patched release for your respective branch) resolves the vulnerability.
Is slack affected?
Yes, org.jenkins-ci.plugins:slack is affected in releases prior to 2.20. Upgrade your dependency to 2.20 or later.
What is the CVSS score of CVE-2019-1003043?
CVE-2019-1003043 has a CVSS v3.1 base score of 4.2 (MODERATE) with vector string CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N.
What CWE is associated with CVE-2019-1003043?
CVE-2019-1003043 is classified under CWE-862: Missing Authorization (The product does not perform an authorization check when an actor attempts to access a resource or perform an action.).
How can I check Maven dependencies for CVE-2019-1003043?
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-22xp-7rcx-xp34",
  "modified" : "2023-10-26T14:30:24Z",
  "published" : "2022-05-13T01:15:08Z",
  "aliases" : [ "CVE-2019-1003043" ],
  "summary" : "Jenkins Slack Notification Plugin missing permission check",
  "details" : "Jenkins Slack Notification Plugin did not perform permission checks on a method implementing form validation. This allowed users with Overall/Read access to Jenkins to connect to an attacker-specified URL using attacker-specified credentials IDs obtained through another method, capturing credentials stored in Jenkins.\n\nAdditionally, this form validation method did not require POST requests, resulting in a cross-site request forgery vulnerability.\n\nThis form validation method now requires POST requests and Overall/Administer (for global configuration) or Item/Configure permissions (for job configuration).",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.jenkins-ci.plugins:slack"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "2.20"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 2.19"
    }
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2019-1003043"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/jenkinsci/slack-plugin/commit/0268bbefdcc283effd27be5318770f7e75c6f102"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/jenkinsci/slack-plugin"
  }, {
    "type" : "WEB",
    "url" : "https://jenkins.io/security/advisory/2019-03-25/#SECURITY-976"
  }, {
    "type" : "WEB",
    "url" : "https://web.archive.org/web/20200227082607/http://www.securityfocus.com/bid/107628"
  }, {
    "type" : "WEB",
    "url" : "http://www.openwall.com/lists/oss-security/2019/03/28/2"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-862" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-10-26T14:30:24Z",
    "nvd_published_at" : "2019-03-28T18:29:00Z"
  }
}