CVE-2016-9187: Moodle/moodle Moodle Unrestricted File Upload Vulnerability Vulnerability

HIGH

Advisory Identifier: GHSA-58fm-v4pr-jh8p

CVSS 8.8

Published 2022-05-17

Advisory Summary

CVE-2016-9187 is a HIGH (CVSS 8.8) moodle unrestricted file upload vulnerability vulnerability (CWE-434: Unrestricted Upload of File with Dangerous Type) affecting Moodle/moodle libraries in the Packagist ecosystem. The issue involves moodle unrestricted file upload vulnerability. Remediation is available in the latest vendor maintenance releases.

CVE-2016-9187 at a Glance

CVE Identifier CVE-2016-9187

GHSA Identifier GHSA-58fm-v4pr-jh8p

Severity HIGH

CVSS v3.1 Base Score 8.8

CWE Classification CWE-434: Unrestricted Upload of File with Dangerous Type

Affected Product Moodle/moodle

Package Ecosystem Packagist

Published Date 2022-05-17

Last Updated 2024-04-23

Security Impact

CVSS: 8.8

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:H/A:H).

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 High (I:H)

Availability High (A:H)

How to Fix CVE-2016-9187

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-2016-9187, 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-434: Unrestricted Upload of File with Dangerous Type, where the product allows the upload or transfer of dangerous file types that are automatically processed within its environment. 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

Unrestricted file upload vulnerability in the double extension support in the "image" module in Moodle 3.1.2 allows remote authenticated users to execute arbitrary code by uploading a file with an executable extension, and then accessing it via unspecified vectors.

CVE-2016-9187 Affected Moodle/moodle Versions

1 component(s)

Product / Package	Ecosystem	Affected Versions	Fixed Version
moodle/moodle	Packagist	≥ 2.0.1 ≤ 3.2.1

References

NVD — CVE-2016-9187 NVD

https://nvd.nist.gov/vuln/detail/CVE-2016-9187

Moodle/moodle Source Repository REPOSITORY

https://github.com/moodle/moodle

Moodle/moodle Security Information SECURITY

https://packetstormsecurity.com/files/139466/Moodle-CMS-3.1.2-Cross-Site-Scripting-File-Upload.html

Moodle/moodle Security Information SECURITY

http://www.securityfocus.com/bid/94191

Frequently Asked Questions

What is CVE-2016-9187?

CVE-2016-9187 is a security vulnerability in Moodle/moodle involving Moodle Unrestricted file upload vulnerability under CWE-434: Unrestricted Upload of File with Dangerous Type.

Which Moodle/moodle versions are affected?

Affected versions include releases prior to current release patches across affected packages: moodle/moodle.

What version fixes CVE-2016-9187?

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-2016-9187?

CVE-2016-9187 has a CVSS v3.1 base score of 8.8 (HIGH) with vector string CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

What CWE is associated with CVE-2016-9187?

CVE-2016-9187 is classified under CWE-434: Unrestricted Upload of File with Dangerous Type (The product allows the upload or transfer of dangerous file types that are automatically processed within its environment.).

How can I check Packagist dependencies for CVE-2016-9187?

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-58fm-v4pr-jh8p",
  "modified" : "2024-04-23T23:36:24Z",
  "published" : "2022-05-17T03:38:33Z",
  "aliases" : [ "CVE-2016-9187" ],
  "summary" : "Moodle Unrestricted file upload vulnerability",
  "details" : "Unrestricted file upload vulnerability in the double extension support in the \"image\" module in Moodle 3.1.2 allows remote authenticated users to execute arbitrary code by uploading a file with an executable extension, and then accessing it via unspecified vectors.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "moodle/moodle"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "2.0.1"
      }, {
        "last_affected" : "3.2.1"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2016-9187"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/moodle/moodle"
  }, {
    "type" : "WEB",
    "url" : "https://packetstormsecurity.com/files/139466/Moodle-CMS-3.1.2-Cross-Site-Scripting-File-Upload.html"
  }, {
    "type" : "WEB",
    "url" : "http://www.securityfocus.com/bid/94191"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-434" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-04-23T23:36:24Z",
    "nvd_published_at" : "2016-11-04T10:59:00Z"
  }
}

CVSS V3

8.8 HIGH