Wordpress Plugin EventON Calendar 4.4 - Unauthenticated Post Access via IDOR

2023-08-0400:00:00

Miguel Santareno

www.exploit-db.com

113

wordpress

eventon calendar

unauthenticated access

idor

security vulnerability

cve-2023-3219

5.3 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

5.7 Medium

AI Score

Confidence

High

0.113 Low

EPSS

Percentile

95.2%

JSON

# Exploit Title: Wordpress Plugin EventON Calendar 4.4 - Unauthenticated Post Access via IDOR
# Date: 03.08.2023
# Exploit Author: Miguel Santareno
# Vendor Homepage: https://www.myeventon.com/
# Version: 4.4
# Tested on: Google and Firefox latest version
# CVE : CVE-2023-3219

# 1. Description
The plugin does not validate that the event_id parameter in its eventon_ics_download ajax action is a valid Event, allowing unauthenticated visitors to access any Post (including unpublished or protected posts) content via the ics export functionality by providing the numeric id of the post.


# 2. Proof of Concept (PoC)
Proof of Concept:
https://example.com/wp-admin/admin-ajax.php?action=eventon_ics_download&event_id=<any post id>