CVE-2015-5339: Moodle/moodle Moodle Does Not Properly Implement Vulnerability

MODERATE
Advisory Identifier: GHSA-gmhr-6f43-7qpj
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CVSS 4.3
Published
Advisory Summary

CVE-2015-5339 is a MODERATE (CVSS 4.3) moodle does not properly implement vulnerability (General Security Weakness) affecting Moodle/moodle libraries in the Packagist ecosystem. The issue involves moodle does not properly implement group-based access restrictions. Remediation is available by upgrading affected packages to version 2.7.11, 2.8.9, 2.9.3.

CVE-2015-5339 at a Glance

CVE Identifier CVE-2015-5339
GHSA Identifier GHSA-gmhr-6f43-7qpj
Severity MODERATE
CVSS v3.1 Base Score 4.3
CWE Classification General Security Weakness
Affected Product Moodle/moodle
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 4.3

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/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 Low (C:L)
Integrity None (I:N)
Availability None (A:N)

How to Fix CVE-2015-5339

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: 2.7.11 
Upgrade moodle/moodle to 2.7.11
moodle/moodle fixed: 2.8.9 
Upgrade moodle/moodle to 2.8.9
moodle/moodle fixed: 2.9.3 
Upgrade moodle/moodle to 2.9.3
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-2015-5339, 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 2.7.11), 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 General Security Weakness. 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

The core_enrol_get_enrolled_users web service in enrol/externallib.php in Moodle through 2.6.11, 2.7.x before 2.7.11, 2.8.x before 2.8.9, and 2.9.x before 2.9.3 does not properly implement group-based access restrictions, which allows remote authenticated users to obtain sensitive course-participant information via a web-service request.

CVE-2015-5339 Affected Moodle/moodle Versions

3 component(s)
Fixed Versions:
2.7.112.8.92.9.3
Product / Package Ecosystem Affected Versions Fixed Version
moodle/moodle
 Packagist
< 2.7.11
2.7.11
moodle/moodle
 Packagist
≥ 2.8.0
< 2.8.9
2.8.9
moodle/moodle
 Packagist
≥ 2.9.0
< 2.9.3
2.9.3

References

NVD — CVE-2015-5339 NVD
https://nvd.nist.gov/vuln/detail/CVE-2015-5339
Security Fix Commit FIX COMMIT
https://github.com/moodle/moodle/commit/12bc713081dc24b6eedea54281876e7c3f5579a6
Security Fix Commit FIX COMMIT
https://github.com/moodle/moodle/commit/512633461ae239677342b40d318803e15e1fd1aa
Security Fix Commit FIX COMMIT
https://github.com/moodle/moodle/commit/b26b2407908abb1a8a4d37aebc18e03139c9776f
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=323234
git.moodle.org/gw WEB
http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-51861

Frequently Asked Questions

What is CVE-2015-5339?
CVE-2015-5339 is a security vulnerability in Moodle/moodle involving Moodle does not properly implement group-based access restrictions under General Security Weakness.
Which Moodle/moodle versions are affected?
Affected versions include releases prior to 2.7.11, 2.8.9, 2.9.3 across affected packages: moodle/moodle.
What version fixes CVE-2015-5339?
Upgrading to 2.7.11, 2.8.9, 2.9.3 (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 2.7.11, 2.8.9, 2.9.3. Upgrade your dependency to 2.7.11, 2.8.9, 2.9.3 or later.
What is the CVSS score of CVE-2015-5339?
CVE-2015-5339 has a CVSS v3.1 base score of 4.3 (MODERATE) with vector string CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.
What CWE is associated with CVE-2015-5339?
CVE-2015-5339 is classified under General Security Weakness.
How can I check Packagist dependencies for CVE-2015-5339?
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-gmhr-6f43-7qpj",
  "modified" : "2024-01-26T20:11:33Z",
  "published" : "2022-05-13T01:12:47Z",
  "aliases" : [ "CVE-2015-5339" ],
  "summary" : "Moodle does not properly implement group-based access restrictions",
  "details" : "The core_enrol_get_enrolled_users web service in enrol/externallib.php in Moodle through 2.6.11, 2.7.x before 2.7.11, 2.8.x before 2.8.9, and 2.9.x before 2.9.3 does not properly implement group-based access restrictions, which allows remote authenticated users to obtain sensitive course-participant information via a web-service request.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "moodle/moodle"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "2.7.11"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "moodle/moodle"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "2.8.0"
      }, {
        "fixed" : "2.8.9"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "moodle/moodle"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "2.9.0"
      }, {
        "fixed" : "2.9.3"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2015-5339"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/moodle/moodle/commit/12bc713081dc24b6eedea54281876e7c3f5579a6"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/moodle/moodle/commit/512633461ae239677342b40d318803e15e1fd1aa"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/moodle/moodle/commit/b26b2407908abb1a8a4d37aebc18e03139c9776f"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/moodle/moodle"
  }, {
    "type" : "WEB",
    "url" : "https://moodle.org/mod/forum/discuss.php?d=323234"
  }, {
    "type" : "WEB",
    "url" : "http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-51861"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-01-26T20:11:33Z",
    "nvd_published_at" : "2016-02-22T05:59:00Z"
  }
}