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CVE-2019-3809 — Moodle Blind SSRF Risk in moodle/moodle — CVE Details

CRITICAL

Moodle Blind SSRF Risk in /badges/mybackpack.php

Published May 13, 2022Updated April 23, 2024Source: osv

Summary

A flaw was found in Moodle versions 3.1 to 3.1.15 and earlier unsupported versions. The mybackpack functionality allowed setting the URL of badges, when it should be restricted to the Mozilla Open Badges backpack URL. This resulted in the possibility of blind SSRF via requests made by the page.

Advisory Timeline

  • First published May 13, 2022 (1613 days ago).
  • Last revised April 23, 2024 — 712 days after initial publication.

Remediation

Upgrade to the fixed version using your package manager.

Composer
Update moodle/moodle to 3.1.16 or later
composer require "moodle/moodle:^3.1.16"

After upgrading, run your dependency scanner again to confirm the vulnerability is resolved.

Affected Packages (1)

Affects 1 ecosystem: packagist (1).

PackageEcosystemAffectedFixed In
moodle/moodle
packagist
v3.1.0, v3.1.0-beta, v3.1.0-rc1, v3.1.0-rc2 (+15 more)3.1.16

Vulnerability Classification

Common Weakness Enumeration (CWE) identifiers for this vulnerability type.

  • CWE-918
    Server-Side Request Forgery (SSRF)MITRE

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 10.0 score means for each attack dimension.

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

References

Frequently Asked Questions

What is CVE-2019-3809?
Moodle Blind SSRF Risk in /badges/mybackpack.php This vulnerability has been assigned a severity rating of CRITICAL (CVSS score: 10.0/10).
How do I check if my project is affected by CVE-2019-3809?
CVE-2019-3809 affects moodle/moodle. Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2019-3809 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score
10.0

Exploitation is straightforward and causes maximum impact. Patch immediately.

Also Known As

GHSA-jp4g-r8c9-3534

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