DedeCMS 7.5 SP2 – Persistent Cross-Site Scripting – Digitalmunition

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Published on April 15th, 2020 📆 | 4302 Views ⚑


DedeCMS 7.5 SP2 – Persistent Cross-Site Scripting

# Title: DedeCMS 7.5 SP2 - Persistent Cross-Site Scripting
# Author: Vulnerability Laboratory
# Date: 2020-04-15
# Vendor Link:
# Software Link:
# CVE: N/A

Document Title:
DedeCMS v7.5 SP2 - Multiple Persistent Web Vulnerabilities

References (Source):

Release Date:

Vulnerability Laboratory ID (VL-ID):

Common Vulnerability Scoring System:

Vulnerability Class:
Cross Site Scripting - Persistent

Current Estimated Price:
500€ - 1.000€

Product & Service Introduction:
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(Copy of the homepage:

Abstract Advisory Information:
The vulnerability laboratory core research team discovered multiple
persistent cross site vulnerabilities in
the official DedeCMS v5.7 SP2 (UTF8) web-application.

Affected Product(s):
DesDev Inc.
Product: DedeCMS - Content Management System  v5.7 SP2

Vulnerability Disclosure Timeline:
2020-04-09: Public Disclosure (Vulnerability Laboratory)

Discovery Status:

Exploitation Technique:

Severity Level:

Authentication Type:
Restricted authentication (user/moderator) - User privileges

User Interaction:
Low User Interaction

Disclosure Type:
Independent Security Research

Technical Details & Description:
Multiple persistent cross site scripting vulnerabilities has been
discovered in the official DedeCMS v5.7 SP2 UTF8  web-application.
The vulnerability allows remote attackers to inject own malicious script
codes with persistent attack vector to compromise browser to
web-application requests from the application-side.

The persistent script code inject web vulnerabilities are located in the
`activepath`, `keyword`, `tag`, `fmdo=x&filename`, `CKEditor`
and `CKEditorFuncNum`parameters of the  `file_pic_view.php`,
`file_manage_view.php`, `tags_main.php`, `select_media.php`,
`media_main.php` files.
The attack vector of the vulnerability is non-persistent and the request
method to inject is POST. Successful exploitation of the vulnerability
results in session hijacking, persistent phishing attacks, persistent
external redirects to malicious source and persistent manipulation
of affected or connected application modules.

Request Method(s):
[+] POST

Vulnerable File(s):
[+] file_pic_view.php
[+] file_manage_view.php
[+] tags_main.php
[+] select_media.php
[+] media_main.php

Vulnerable Parameter(s):
[+] tag
[+] keyword
[+] activepath
[+] fmdo=move&filename & fmdo=edit&filename
[+] CKEditor & CKEditor=body&CKEditorFuncNum

Proof of Concept (PoC):
The web vulnerabilities can be exploited by remote attackers with
privileged user account and with low user interaction.
For security demonstration or to reproduce the vulnerability follow the
provided information and steps below to continue.

Request: Examples

PoC: Payload
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