CVE-2024-1439: Moodle/moodle Moodle Improper Access Control Vulnerability Vulnerability

MODERATE
Advisory Identifier: GHSA-5p2x-8427-9fgp
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CVSS 6.5
CWE-284
Published
Advisory Summary

CVE-2024-1439 is a MODERATE (CVSS 6.5) moodle improper access control vulnerability vulnerability (CWE-284: Improper Access Control) affecting Moodle/moodle libraries in the Packagist ecosystem. The issue involves moodle improper access control vulnerability. Remediation is available in the latest vendor maintenance releases.

CVE-2024-1439 at a Glance

CVE Identifier CVE-2024-1439
GHSA Identifier GHSA-5p2x-8427-9fgp
Severity MODERATE
CVSS v3.1 Base Score 6.5
CWE Classification CWE-284: Improper Access Control
Affected Product Moodle/moodle
Package Ecosystem Packagist
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:N/I:H/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 None (C:N)
Integrity High (I:H)
Availability None (A:N)

How to Fix CVE-2024-1439

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

moodle/moodle fixed: Latest secure release 
Upgrade moodle/moodle to Latest secure release
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for moodle/moodle

How to Check if You Are Affected

To determine whether your application is affected by CVE-2024-1439, inspect your project dependencies for Moodle/moodle:

inspect dependencies for moodle/moodle

Analyze the terminal output to locate any version of Moodle/moodle 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: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-284: Improper Access Control, where the product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. In Moodle/moodle, 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

Inadequate access control in Moodle LMS. This vulnerability could allow a local user with a student role to create arbitrary events intended for users with higher roles. It could also allow the attacker to add events to the calendar of all users without their prior consent.

CVE-2024-1439 Affected Moodle/moodle Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
moodle/moodle
 Packagist
≤ 4.2.0

References

NVD — CVE-2024-1439 NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-1439
Moodle/moodle Source Repository REPOSITORY
https://github.com/moodle/moodle
www.incibe.es/en/incibe-cert/noti... WEB
https://www.incibe.es/en/incibe-cert/notices/aviso/inadequate-access-control-vulnerability-moodle

Frequently Asked Questions

What is CVE-2024-1439?
CVE-2024-1439 is a security vulnerability in Moodle/moodle involving Moodle Improper Access Control vulnerability under CWE-284: Improper Access Control.
Which Moodle/moodle versions are affected?
Affected versions include releases prior to current release patches across affected packages: moodle/moodle.
What version fixes CVE-2024-1439?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is moodle/moodle affected?
Yes, moodle/moodle 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-2024-1439?
CVE-2024-1439 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:N/I:H/A:N.
What CWE is associated with CVE-2024-1439?
CVE-2024-1439 is classified under CWE-284: Improper Access Control (The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.).
How can I check Packagist dependencies for CVE-2024-1439?
Run the dependency tree command: 'inspect dependencies for moodle/moodle'. 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-5p2x-8427-9fgp",
  "modified" : "2024-02-12T17:33:01Z",
  "published" : "2024-02-12T12:30:32Z",
  "aliases" : [ "CVE-2024-1439" ],
  "summary" : "Moodle Improper Access Control vulnerability",
  "details" : "Inadequate access control in Moodle LMS. This vulnerability could allow a local user with a student role to create arbitrary events intended for users with higher roles. It could also allow the attacker to add events to the calendar of all users without their prior consent.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "moodle/moodle"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "4.2.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2024-1439"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/moodle/moodle"
  }, {
    "type" : "WEB",
    "url" : "https://www.incibe.es/en/incibe-cert/notices/aviso/inadequate-access-control-vulnerability-moodle"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-284" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-02-12T17:33:01Z",
    "nvd_published_at" : "2024-02-12T11:15:08Z"
  }
}