CVE-2017-2642: Moodle/moodle Moodle User Fullname Disclosure On Vulnerability

MODERATE
Advisory Identifier: GHSA-54r2-r67g-fr9m
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CVSS 6.5
CWE-200
Published
Advisory Summary

CVE-2017-2642 is a MODERATE (CVSS 6.5) moodle user fullname disclosure on vulnerability (CWE-200: Exposure of Sensitive Information to an Unauthorized Actor) affecting Moodle/moodle libraries in the Packagist ecosystem. The issue involves moodle user fullname disclosure on user preferences page. Remediation is available by upgrading affected packages to version 3.1.7, 3.2.4, 3.3.1.

CVE-2017-2642 at a Glance

CVE Identifier CVE-2017-2642
GHSA Identifier GHSA-54r2-r67g-fr9m
Severity MODERATE
CVSS v3.1 Base Score 6.5
CWE Classification CWE-200: Exposure of Sensitive Information to an Unauthorized Actor
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:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/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 High (C:H)
Integrity None (I:N)
Availability None (A:N)

How to Fix CVE-2017-2642

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: 3.1.7 
Upgrade moodle/moodle to 3.1.7
moodle/moodle fixed: 3.2.4 
Upgrade moodle/moodle to 3.2.4
moodle/moodle fixed: 3.3.1 
Upgrade moodle/moodle to 3.3.1
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-2017-2642, 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 3.1.7), 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-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 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

Moodle 3.x has user fullname disclosure on the user preferences page.

CVE-2017-2642 Affected Moodle/moodle Versions

3 component(s)
Fixed Versions:
3.1.73.2.43.3.1
Product / Package Ecosystem Affected Versions Fixed Version
moodle/moodle
 Packagist
≥ 3.1
< 3.1.7
3.1.7
moodle/moodle
 Packagist
≥ 3.2
< 3.2.4
3.2.4
moodle/moodle
 Packagist
≥ 3.3
< 3.3.1
3.3.1

References

NVD — CVE-2017-2642 NVD
https://nvd.nist.gov/vuln/detail/CVE-2017-2642
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=355554
Moodle/moodle Security Information SECURITY
http://www.securityfocus.com/bid/99606

Frequently Asked Questions

What is CVE-2017-2642?
CVE-2017-2642 is a security vulnerability in Moodle/moodle involving Moodle User fullname disclosure on user preferences page under CWE-200: Exposure of Sensitive Information to an Unauthorized Actor.
Which Moodle/moodle versions are affected?
Affected versions include releases prior to 3.1.7, 3.2.4, 3.3.1 across affected packages: moodle/moodle.
What version fixes CVE-2017-2642?
Upgrading to 3.1.7, 3.2.4, 3.3.1 (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 3.1.7, 3.2.4, 3.3.1. Upgrade your dependency to 3.1.7, 3.2.4, 3.3.1 or later.
What is the CVSS score of CVE-2017-2642?
CVE-2017-2642 has a CVSS v3.1 base score of 6.5 (MODERATE) with vector string CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.
What CWE is associated with CVE-2017-2642?
CVE-2017-2642 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 Packagist dependencies for CVE-2017-2642?
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-54r2-r67g-fr9m",
  "modified" : "2024-04-23T23:42:19Z",
  "published" : "2022-05-17T02:27:46Z",
  "aliases" : [ "CVE-2017-2642" ],
  "summary" : "Moodle User fullname disclosure on user preferences page",
  "details" : "Moodle 3.x has user fullname disclosure on the user preferences page.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "moodle/moodle"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "3.1"
      }, {
        "fixed" : "3.1.7"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "moodle/moodle"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "3.2"
      }, {
        "fixed" : "3.2.4"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "moodle/moodle"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "3.3"
      }, {
        "fixed" : "3.3.1"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2017-2642"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/moodle/moodle"
  }, {
    "type" : "WEB",
    "url" : "https://moodle.org/mod/forum/discuss.php?d=355554"
  }, {
    "type" : "WEB",
    "url" : "http://www.securityfocus.com/bid/99606"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-200" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-04-23T23:42:19Z",
    "nvd_published_at" : "2017-07-17T17:29:00Z"
  }
}