Vulnerability · Published May 31, 2024 · Assigned by fedora
CVE-2024-33999moodle: unsafe direct use of $_SERVER['HTTP_REFERER'] in admin/tool/mfa/index.php
Critical 9.8
In plain English
A critical-severity improper input validation in Moodle. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 46% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)9.8Critical
Exploit odds (30 days)0.5%top 54.1% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
The referrer URL used by MFA required additional sanitizing, rather than being used directly.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Packagist | moodle/moodle | 4.3.4 | GHSA-r2wx-46gp-rp3h |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Moodle | 4.3 – through 4.3.3 |
Weakness: CWE-20 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H