CVE-2018-1082: Moodle/moodle Moodle Improper Authentication Vulnerability

HIGH
Advisory Identifier: GHSA-qh8m-6g4p-33h3
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CVSS 8.1
CWE-287
Published
Advisory Summary

CVE-2018-1082 is a HIGH (CVSS 8.1) moodle improper authentication vulnerability (CWE-287: Improper Authentication) affecting Moodle/moodle libraries in the Packagist ecosystem. The issue involves moodle improper authentication. Remediation is available by upgrading affected packages to version 3.3.5, 3.4.2.

CVE-2018-1082 at a Glance

CVE Identifier CVE-2018-1082
GHSA Identifier GHSA-qh8m-6g4p-33h3
Severity HIGH
CVSS v3.1 Base Score 8.1
CWE Classification CWE-287: Improper Authentication
Affected Product Moodle/moodle
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 8.1

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H).

Attack Vector Network (AV:N)
Attack Complexity High (AC:H)
Privileges Required None (PR:N)
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-2018-1082

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: 3.3.5 
Upgrade moodle/moodle to 3.3.5
moodle/moodle fixed: 3.4.2 
Upgrade moodle/moodle to 3.4.2
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-2018-1082, 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 3.3.5), 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-287: Improper Authentication, where when an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. 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 3.4 to 3.4.1, and 3.3 to 3.3.4. If a user account using OAuth2 authentication method was once confirmed but later suspended, the user could still login to the site.

CVE-2018-1082 Affected Moodle/moodle Versions

2 component(s)
Fixed Versions:
3.3.53.4.2
Product / Package Ecosystem Affected Versions Fixed Version
moodle/moodle
 Packagist
≥ 3.3
< 3.3.5
3.3.5
moodle/moodle
 Packagist
≥ 3.4
< 3.4.2
3.4.2

References

NVD — CVE-2018-1082 NVD
https://nvd.nist.gov/vuln/detail/CVE-2018-1082
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=367939
git.moodle.org/gw WEB
http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-60101
Moodle/moodle Security Information SECURITY
http://www.securityfocus.com/bid/103725

Frequently Asked Questions

What is CVE-2018-1082?
CVE-2018-1082 is a security vulnerability in Moodle/moodle involving Moodle Improper Authentication under CWE-287: Improper Authentication.
Which Moodle/moodle versions are affected?
Affected versions include releases prior to 3.3.5, 3.4.2 across affected packages: moodle/moodle.
What version fixes CVE-2018-1082?
Upgrading to 3.3.5, 3.4.2 (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 3.3.5, 3.4.2. Upgrade your dependency to 3.3.5, 3.4.2 or later.
What is the CVSS score of CVE-2018-1082?
CVE-2018-1082 has a CVSS v3.1 base score of 8.1 (HIGH) with vector string CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2018-1082?
CVE-2018-1082 is classified under CWE-287: Improper Authentication (When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.).
How can I check Packagist dependencies for CVE-2018-1082?
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-qh8m-6g4p-33h3",
  "modified" : "2024-04-23T23:41:39Z",
  "published" : "2022-05-13T01:33:33Z",
  "aliases" : [ "CVE-2018-1082" ],
  "summary" : "Moodle Improper Authentication",
  "details" : "A flaw was found in Moodle 3.4 to 3.4.1, and 3.3 to 3.3.4. If a user account using OAuth2 authentication method was once confirmed but later suspended, the user could still login to the site.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "moodle/moodle"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "3.3"
      }, {
        "fixed" : "3.3.5"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "moodle/moodle"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "3.4"
      }, {
        "fixed" : "3.4.2"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2018-1082"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/moodle/moodle"
  }, {
    "type" : "WEB",
    "url" : "https://moodle.org/mod/forum/discuss.php?d=367939"
  }, {
    "type" : "WEB",
    "url" : "http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-60101"
  }, {
    "type" : "WEB",
    "url" : "http://www.securityfocus.com/bid/103725"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-287" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-04-23T23:41:39Z",
    "nvd_published_at" : "2018-04-04T21:29:00Z"
  }
}