CVE-2020-23811: Xxl job Xxl-job Sensitive Data Exposure Vulnerability

HIGH
Advisory Identifier: GHSA-m5q9-488r-4rmp
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CVSS 7.5
CWE-200
Published
Advisory Summary

CVE-2020-23811 is a HIGH (CVSS 7.5) xxl-job sensitive data exposure vulnerability (CWE-200: Exposure of Sensitive Information to an Unauthorized Actor) affecting Xxl job libraries in the Maven ecosystem. The issue involves xxl-job sensitive data exposure. Remediation is available in the latest vendor maintenance releases.

CVE-2020-23811 at a Glance

CVE Identifier CVE-2020-23811
GHSA Identifier GHSA-m5q9-488r-4rmp
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-200: Exposure of Sensitive Information to an Unauthorized Actor
Affected Product Xxl job
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 7.5

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
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-2020-23811

To remediate this vulnerability, upgrade all affected Xxl job 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.xuxueli:xxl-job fixed: Latest secure release 
<dependency>
    <groupId>com.xuxueli</groupId>
    <artifactId>xxl-job</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=com.xuxueli

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2020-23811, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree -Dincludes=com.xuxueli

Analyze the terminal output to locate any version of Xxl job 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=com.xuxueli 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 Xxl job, 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

xxl-job 2.2.0 allows Information Disclosure of username, model, and password via job/admin/controller/UserController.java.

CVE-2020-23811 Affected Xxl job Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
com.xuxueli:xxl-job
maven/com.xuxueli/xxl-job
Maven
≤ 2.2.0

References

NVD — CVE-2020-23811 NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-23811
Xxl job Source Repository REPOSITORY
https://github.com/xuxueli/xxl-job

Frequently Asked Questions

What is CVE-2020-23811?
CVE-2020-23811 is a security vulnerability in Xxl job involving xxl-job sensitive data exposure under CWE-200: Exposure of Sensitive Information to an Unauthorized Actor.
Which Xxl job versions are affected?
Affected versions include releases prior to current release patches across affected packages: com.xuxueli:xxl-job.
What version fixes CVE-2020-23811?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is xxl-job affected?
Yes, com.xuxueli:xxl-job 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-2020-23811?
CVE-2020-23811 has a CVSS v3.1 base score of 7.5 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
What CWE is associated with CVE-2020-23811?
CVE-2020-23811 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-2020-23811?
Run the dependency tree command: 'mvn dependency:tree -Dincludes=com.xuxueli'. 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-m5q9-488r-4rmp",
  "modified" : "2023-07-18T19:36:21Z",
  "published" : "2022-05-24T17:27:18Z",
  "aliases" : [ "CVE-2020-23811" ],
  "summary" : "xxl-job sensitive data exposure",
  "details" : "xxl-job 2.2.0 allows Information Disclosure of username, model, and password via job/admin/controller/UserController.java.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "com.xuxueli:xxl-job"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "2.2.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2020-23811"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/xuxueli/xxl-job"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-200" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-07-18T19:36:21Z",
    "nvd_published_at" : "2020-09-03T17:15:00Z"
  }
}