CVE-2023-33779: Xxl job Privilege Escalation Vulnerability

HIGH
Advisory Identifier: GHSA-9mmj-64jh-ph9c
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CVSS 8.8
CWE-863
Published
Advisory Summary

CVE-2023-33779 is a HIGH (CVSS 8.8) privilege escalation vulnerability (CWE-863: Incorrect Authorization) affecting Xxl job libraries in the Maven ecosystem. The issue involves privilege escalation in xxl-job. Remediation is available in the latest vendor maintenance releases.

CVE-2023-33779 at a Glance

CVE Identifier CVE-2023-33779
GHSA Identifier GHSA-9mmj-64jh-ph9c
Severity HIGH
CVSS v3.1 Base Score 8.8
CWE Classification CWE-863: Incorrect Authorization
Affected Product Xxl job
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 8.8

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:H/A:H).

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 High (I:H)
Availability High (A:H)

How to Fix CVE-2023-33779

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-2023-33779, 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-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 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

A lateral privilege escalation vulnerability in XXL-Job v2.4.1 allows users to execute arbitrary commands on another user's account via a crafted POST request to the component `/jobinfo/`.

CVE-2023-33779 Affected Xxl job Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
com.xuxueli:xxl-job
maven/com.xuxueli/xxl-job
Maven
≤ 2.4.1

References

NVD — CVE-2023-33779 NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-33779
Xxl job Source Repository REPOSITORY
https://github.com/silence-silence/xxl-job-lateral-privilege-escalation-vulnerability-/blob/main/README.md
Xxl job Source Repository REPOSITORY
https://github.com/xuxueli/xxl-job
xxl-job.com WEB
http://xxl-job.com

Frequently Asked Questions

What is CVE-2023-33779?
CVE-2023-33779 is a security vulnerability in Xxl job involving Privilege escalation in XXL-Job under CWE-863: Incorrect Authorization.
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-2023-33779?
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-2023-33779?
CVE-2023-33779 has a CVSS v3.1 base score of 8.8 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2023-33779?
CVE-2023-33779 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-2023-33779?
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-9mmj-64jh-ph9c",
  "modified" : "2023-06-06T17:17:54Z",
  "published" : "2023-05-26T18:30:21Z",
  "aliases" : [ "CVE-2023-33779" ],
  "summary" : "Privilege escalation in XXL-Job",
  "details" : "A lateral privilege escalation vulnerability in XXL-Job v2.4.1 allows users to execute arbitrary commands on another user's account via a crafted POST request to the component `/jobinfo/`.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "com.xuxueli:xxl-job"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "2.4.1"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2023-33779"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/silence-silence/xxl-job-lateral-privilege-escalation-vulnerability-/blob/main/README.md"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/xuxueli/xxl-job"
  }, {
    "type" : "WEB",
    "url" : "http://xxl-job.com"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-863" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-05-26T21:10:01Z",
    "nvd_published_at" : "2023-05-26T17:15:18Z"
  }
}