CVE-2024-45691: Moodle/moodle Moodle Lesson Activity Password Bypass Vulnerability

MODERATE
Advisory Identifier: GHSA-xfv7-h2qg-rjm7
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CVSS 5.4
CWE-289 CWE-285
Published
Advisory Summary

CVE-2024-45691 is a MODERATE (CVSS 5.4) moodle lesson activity password bypass vulnerability (CWE-289: Authentication Bypass by Alternate Name) affecting Moodle/moodle libraries in the Packagist ecosystem. The issue involves moodle lesson activity password bypass through php loose comparison. Remediation is available by upgrading affected packages to version 4.1.13, 4.2.10, 4.3.7, 4.4.3.

CVE-2024-45691 at a Glance

CVE Identifier CVE-2024-45691
GHSA Identifier GHSA-xfv7-h2qg-rjm7
Severity MODERATE
CVSS v3.1 Base Score 5.4
CWE Classification CWE-289: Authentication Bypass by Alternate Name
Affected Product Moodle/moodle
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 5.4

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:L/I:L/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 Low (C:L)
Integrity Low (I:L)
Availability None (A:N)

How to Fix CVE-2024-45691

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: 4.1.13 
Upgrade moodle/moodle to 4.1.13
moodle/moodle fixed: 4.2.10 
Upgrade moodle/moodle to 4.2.10
moodle/moodle fixed: 4.3.7 
Upgrade moodle/moodle to 4.3.7
moodle/moodle fixed: 4.4.3 
Upgrade moodle/moodle to 4.4.3
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-2024-45691, 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 4.1.13), 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-289: Authentication Bypass by Alternate Name, where the product performs authentication based on the name of a resource being accessed, or the name of the actor performing the access, but it does not properly check all possible names for that resource or 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

A flaw was found in Moodle. When restricting access to a lesson activity with a password, certain passwords could be bypassed or less secure due to a loose comparison in the password-checking logic. This issue only affected passwords set to "magic hash" values.

CVE-2024-45691 Affected Moodle/moodle Versions

4 component(s)
Fixed Versions:
4.1.134.2.104.3.74.4.3
Product / Package Ecosystem Affected Versions Fixed Version
moodle/moodle
 Packagist
< 4.1.13
4.1.13
moodle/moodle
 Packagist
≥ 4.2.0-beta
< 4.2.10
4.2.10
moodle/moodle
 Packagist
≥ 4.3.0-beta
< 4.3.7
4.3.7
moodle/moodle
 Packagist
≥ 4.4.0-beta
< 4.4.3
4.4.3

References

NVD — CVE-2024-45691 NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-45691
Security Fix Commit FIX COMMIT
https://github.com/moodle/moodle/commit/3fc1073d304f660d2552b591c5fb92547ed01e92
bugzilla.redhat.com/show_bug.cgi WEB
https://bugzilla.redhat.com/show_bug.cgi?id=2309940
Moodle/moodle Source Repository REPOSITORY
https://github.com/moodle/moodle
moodle.org/mod/forum/discuss.p... WEB
https://moodle.org/mod/forum/discuss.php?d=461897#p1854494
Moodle/moodle Security Information SECURITY
https://moodle.org/security

Frequently Asked Questions

What is CVE-2024-45691?
CVE-2024-45691 is a security vulnerability in Moodle/moodle involving Moodle Lesson activity password bypass through PHP loose comparison under CWE-289: Authentication Bypass by Alternate Name.
Which Moodle/moodle versions are affected?
Affected versions include releases prior to 4.1.13, 4.2.10, 4.3.7, 4.4.3 across affected packages: moodle/moodle.
What version fixes CVE-2024-45691?
Upgrading to 4.1.13, 4.2.10, 4.3.7, 4.4.3 (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 4.1.13, 4.2.10, 4.3.7, 4.4.3. Upgrade your dependency to 4.1.13, 4.2.10, 4.3.7, 4.4.3 or later.
What is the CVSS score of CVE-2024-45691?
CVE-2024-45691 has a CVSS v3.1 base score of 5.4 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N.
What CWE is associated with CVE-2024-45691?
CVE-2024-45691 is classified under CWE-289: Authentication Bypass by Alternate Name (The product performs authentication based on the name of a resource being accessed, or the name of the actor performing the access, but it does not properly check all possible names for that resource or actor.).
How can I check Packagist dependencies for CVE-2024-45691?
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-xfv7-h2qg-rjm7",
  "modified" : "2024-11-20T21:45:02Z",
  "published" : "2024-11-20T12:30:35Z",
  "aliases" : [ "CVE-2024-45691" ],
  "summary" : "Moodle Lesson activity password bypass through PHP loose comparison",
  "details" : "A flaw was found in Moodle. When restricting access to a lesson activity with a password, certain passwords could be bypassed or less secure due to a loose comparison in the password-checking logic. This issue only affected passwords set to \"magic hash\" values.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N"
  } ],
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      "name" : "moodle/moodle"
    },
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      }, {
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    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "moodle/moodle"
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    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
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      }, {
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    "ranges" : [ {
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      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2024-45691"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/moodle/moodle/commit/3fc1073d304f660d2552b591c5fb92547ed01e92"
  }, {
    "type" : "WEB",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2309940"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/moodle/moodle"
  }, {
    "type" : "WEB",
    "url" : "https://moodle.org/mod/forum/discuss.php?d=461897#p1854494"
  }, {
    "type" : "WEB",
    "url" : "https://moodle.org/security"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-285", "CWE-289" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-11-20T18:25:26Z",
    "nvd_published_at" : "2024-11-20T11:15:05Z"
  }
}