WordPress Plugin File Upload 4.3.2 - Stored Cross-Site Scripting

2018-04-1000:00:00

ManhNho

www.exploit-db.com

3.5 Low

CVSS2

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

SINGLE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

AV:N/AC:M/Au:S/C:N/I:P/A:N

5.4 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

NONE

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

5.5 Medium

AI Score

Confidence

High

0.002 Low

EPSS

Percentile

55.9%

JSON

# Exploit Title: WordPress Plugin WordPress File Upload 4.3.2 - Stored XSS
# Date: 31/03/2018
# Exploit Author: ManhNho
# Vendor Homepage: https://www.iptanus.com/
# Software Link: https://downloads.wordpress.org/plugin/wp-file-upload.zip
# Version: 4.3.2
# Tested on: CentOS 6.5
# CVE : CVE-2018-9172
# Category : Webapps

1. Description
===========
WordPress File Upload is a WordPress plugin with more than 20.000 active
installations.
Version 4.3.2 (and possibly previous versions) are affected by a Stored XSS
vulnerability in the admin panel ,related to the "Uploader Instances"
functionality.

2. Proof of Concept
===========

1. Login to admin panel
2. Access to Wordpress File Upload Control Panel. In Uploader Instances
function, choose and edit created Instance
3. In Plugin ID field, inject XSS pattern such as:
<script>alert('ManhNho')</script> and click Update button
4. Access to Pages/Posts contain upload option, we got alert ManhNho

3. References
===========
https://www.iptanus.com/new-version-4-3-3-of-wordpress-file-upload-plugin/
https://wordpress.org/plugins/wp-file-upload/#developers
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-9172