CVE-2021-21664: Deployit plugin Incorrect Permission Check Vulnerability

MODERATE
Advisory Identifier: GHSA-jm4g-8rvq-v87j
Share
CVSS 6.5
CWE-863
Published
Advisory Summary

CVE-2021-21664 is a MODERATE (CVSS 6.5) incorrect permission check vulnerability (CWE-863: Incorrect Authorization) affecting Deployit plugin libraries in the Maven ecosystem. The issue involves incorrect permission check in xebialabs xl deploy plugin allows capturing credentials. Remediation is available by upgrading affected packages to version 10.0.2.

CVE-2021-21664 at a Glance

CVE Identifier CVE-2021-21664
GHSA Identifier GHSA-jm4g-8rvq-v87j
Severity MODERATE
CVSS v3.1 Base Score 6.5
CWE Classification CWE-863: Incorrect Authorization
Affected Product Deployit plugin
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:3.1/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-2021-21664

To remediate this vulnerability, upgrade all affected Deployit plugin dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

com.xebialabs.deployit.ci:deployit-plugin fixed: 10.0.2 
<dependency>
    <groupId>com.xebialabs.deployit.ci</groupId>
    <artifactId>deployit-plugin</artifactId>
    <version>10.0.2</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=com.xebialabs.deployit.ci

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2021-21664, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree -Dincludes=com.xebialabs.deployit.ci

Analyze the terminal output to locate any version of Deployit plugin in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 10.0.2), your application is affected.

Note: The mvn dependency:tree -Dincludes=com.xebialabs.deployit.ci 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-863: Incorrect Authorization, where the product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check. In Deployit plugin, 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 incorrect permission check in Jenkins XebiaLabs XL Deploy Plugin 10.0.1 and earlier allows attackers with Generic Create permission to connect to an attacker-specified URL using attacker-specified credentials IDs obtained through another method, capturing Username/password credentials stored in Jenkins. The permission check was partially fixed in XebiaLabs XL Deploy Plugin 7.5.9: A permission check was added, but for the wrong permission, still allowing some non-admin users to access the form validation method.

CVE-2021-21664 Affected Deployit plugin Versions

1 component(s)
Fixed Versions:
10.0.2
Product / Package Ecosystem Affected Versions Fixed Version
com.xebialabs.deployit.ci:deployit-plugin
maven/com.xebialabs.deployit.ci/deployit-plugin
Maven
< 10.0.2
10.0.2

References

NVD — CVE-2021-21664 NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-21664
Security Fix Commit FIX COMMIT
https://github.com/jenkinsci/xldeploy-plugin/commit/79ae204d2ee6cd94badf4c24a150cee13a3bde44
Deployit plugin Source Repository REPOSITORY
https://github.com/jenkinsci/xldeploy-plugin
Deployit plugin Security Information SECURITY
https://www.jenkins.io/security/advisory/2021-06-10/#SECURITY-1982
Deployit plugin Security Information SECURITY
http://www.openwall.com/lists/oss-security/2021/06/10/14

Frequently Asked Questions

What is CVE-2021-21664?
CVE-2021-21664 is a security vulnerability in Deployit plugin involving Incorrect permission check in XebiaLabs XL Deploy Plugin allows capturing credentials under CWE-863: Incorrect Authorization.
Which Deployit plugin versions are affected?
Affected versions include releases prior to 10.0.2 across affected packages: com.xebialabs.deployit.ci:deployit-plugin.
What version fixes CVE-2021-21664?
Upgrading to 10.0.2 (or the latest patched release for your respective branch) resolves the vulnerability.
Is deployit-plugin affected?
Yes, com.xebialabs.deployit.ci:deployit-plugin is affected in releases prior to 10.0.2. Upgrade your dependency to 10.0.2 or later.
What is the CVSS score of CVE-2021-21664?
CVE-2021-21664 has a CVSS v3.1 base score of 6.5 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.
What CWE is associated with CVE-2021-21664?
CVE-2021-21664 is classified under CWE-863: Incorrect Authorization (The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.).
How can I check Maven dependencies for CVE-2021-21664?
Run the dependency tree command: 'mvn dependency:tree -Dincludes=com.xebialabs.deployit.ci'. 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-jm4g-8rvq-v87j",
  "modified" : "2023-12-21T13:49:53Z",
  "published" : "2022-05-24T19:04:53Z",
  "aliases" : [ "CVE-2021-21664" ],
  "summary" : "Incorrect permission check in XebiaLabs XL Deploy Plugin allows capturing credentials",
  "details" : "An incorrect permission check in Jenkins XebiaLabs XL Deploy Plugin 10.0.1 and earlier allows attackers with Generic Create permission to connect to an attacker-specified URL using attacker-specified credentials IDs obtained through another method, capturing Username/password credentials stored in Jenkins.\n\nThe permission check was partially fixed in XebiaLabs XL Deploy Plugin 7.5.9: A permission check was added, but for the wrong permission, still allowing some non-admin users to access the form validation method.\n",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "com.xebialabs.deployit.ci:deployit-plugin"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "10.0.2"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 10.0.1"
    }
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2021-21664"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/jenkinsci/xldeploy-plugin/commit/79ae204d2ee6cd94badf4c24a150cee13a3bde44"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/jenkinsci/xldeploy-plugin"
  }, {
    "type" : "WEB",
    "url" : "https://www.jenkins.io/security/advisory/2021-06-10/#SECURITY-1982"
  }, {
    "type" : "WEB",
    "url" : "http://www.openwall.com/lists/oss-security/2021/06/10/14"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-863" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-12-14T16:18:06Z",
    "nvd_published_at" : "2021-06-10T15:15:00Z"
  }
}