CVE-2022-40314: Moodle/moodle Remote Code Execution Vulnerability

CRITICAL
Advisory Identifier: GHSA-2hmm-q272-xmhf
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CVSS 9.8
CWE-94
Published
Advisory Summary

CVE-2022-40314 is a CRITICAL (CVSS 9.8) remote code execution vulnerability (CWE-94: Improper Control of Generation of Code ('Code Injection')) affecting Moodle/moodle libraries in the Packagist ecosystem. The issue involves moodle remote code execution. Remediation is available by upgrading affected packages to version 3.9.17, 3.11.10, 4.0.4.

CVE-2022-40314 at a Glance

CVE Identifier CVE-2022-40314
GHSA Identifier GHSA-2hmm-q272-xmhf
Severity CRITICAL
CVSS v3.1 Base Score 9.8
CWE Classification CWE-94: Improper Control of Generation of Code ('Code Injection')
Affected Product Moodle/moodle
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 9.8

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
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-2022-40314

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: 3.9.17 
Upgrade moodle/moodle to 3.9.17
moodle/moodle fixed: 3.11.10 
Upgrade moodle/moodle to 3.11.10
moodle/moodle fixed: 4.0.4 
Upgrade moodle/moodle to 4.0.4
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-2022-40314, 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 3.9.17), 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-94: Improper Control of Generation of Code ('Code Injection'), where the product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment. 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 remote code execution risk when restoring backup files originating from Moodle 1.9 was identified.

CVE-2022-40314 Affected Moodle/moodle Versions

3 component(s)
Fixed Versions:
3.9.173.11.104.0.4
Product / Package Ecosystem Affected Versions Fixed Version
moodle/moodle
 Packagist
< 3.9.17
3.9.17
moodle/moodle
 Packagist
≥ 3.11
< 3.11.10
3.11.10
moodle/moodle
 Packagist
≥ 4.0
< 4.0.4
4.0.4

References

NVD — CVE-2022-40314 NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-40314
bugzilla.redhat.com/show_bug.cgi WEB
https://bugzilla.redhat.com/show_bug.cgi?id=2128147
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=438393
git.moodle.org/gw WEB
http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-75405

Frequently Asked Questions

What is CVE-2022-40314?
CVE-2022-40314 is a security vulnerability in Moodle/moodle involving Moodle remote code execution under CWE-94: Improper Control of Generation of Code ('Code Injection').
Which Moodle/moodle versions are affected?
Affected versions include releases prior to 3.9.17, 3.11.10, 4.0.4 across affected packages: moodle/moodle.
What version fixes CVE-2022-40314?
Upgrading to 3.9.17, 3.11.10, 4.0.4 (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 3.9.17, 3.11.10, 4.0.4. Upgrade your dependency to 3.9.17, 3.11.10, 4.0.4 or later.
What is the CVSS score of CVE-2022-40314?
CVE-2022-40314 has a CVSS v3.1 base score of 9.8 (CRITICAL) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2022-40314?
CVE-2022-40314 is classified under CWE-94: Improper Control of Generation of Code ('Code Injection') (The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.).
How can I check Packagist dependencies for CVE-2022-40314?
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-2hmm-q272-xmhf",
  "modified" : "2024-04-23T23:43:09Z",
  "published" : "2022-10-01T00:00:20Z",
  "aliases" : [ "CVE-2022-40314" ],
  "summary" : "Moodle remote code execution",
  "details" : "A remote code execution risk when restoring backup files originating from Moodle 1.9 was identified.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "moodle/moodle"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "3.9.17"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "moodle/moodle"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "3.11"
      }, {
        "fixed" : "3.11.10"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "moodle/moodle"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "4.0"
      }, {
        "fixed" : "4.0.4"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2022-40314"
  }, {
    "type" : "WEB",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2128147"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/moodle/moodle"
  }, {
    "type" : "WEB",
    "url" : "https://moodle.org/mod/forum/discuss.php?d=438393"
  }, {
    "type" : "WEB",
    "url" : "http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-75405"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-94" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-04-23T23:43:09Z",
    "nvd_published_at" : "2022-09-30T17:15:00Z"
  }
}