Headline

CVE-2023-31671: [CVE-2023-31671] Improper neutralization of SQL parameter in Postfinance module

PrestaShop postfinance <= 17.1.13 is vulnerable to SQL Injection via PostfinanceValidationModuleFrontController::postProcess().

1 year ago

CVE

Open in Source

#sql #vulnerability #web #php #auth

SQL injection vulnerability found in the module “Postfinance” edited by Webbax for PrestaShop before 17.1.14. (17.1.14 fix the issue) allow a remote attacker to perform SQL injection in affected versions.

Summary

CVE ID: CVE-2023-31671
Published at: 2023-06-13
Advisory source: Friends-Of-Presta
Platform: PrestaShop
Product: postfinance
Impacted release: <= 17.1.13 (17.1.14 fix the issue).
Product author: Webbax
Weakness: CWE-89
Severity: critical (9.8)

Description

Before version 17.1.14, a sensitive SQL call in the class PostfinanceValidationModuleFrontController::postProcess() could be executed with a trivial HTTP call and exploited to forge a blind SQL injection by sending the orderID variable as a GET parameter. Its exploded version, $get_id_cart (a part of orderID), is then used in a SQL query.

This vulnerability can be exploited by an attacker to manipulate the SQL query and potentially gain unauthorized access to the database. It is important to update to version 17.1.14 or later to address this issue and ensure the security of the system.

CVSS base metrics

Attack vector: network
Attack complexity: low
Privilege required: none
User interaction: none
Scope: unchanged
Confidentiality: high
Integrity: high
Availability: high

Vector string: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Possible malicious usage

Obtain admin access
Remove data on the associated PrestaShop
Copy/paste data from sensitive tables to FRONT to exposed tokens and unlock admins’s ajax scripts
Rewrite SMTP settings to hijacked emails

Patch

--- a/modules/postfiannce/validation.php
+++ b/modules/postfiannce/validation.php
        if(Tools::strtoupper(sha1($string_crypt))==$sha){
        //if(Tools::strtoupper(sha1($string_crypt))==$sha && $getv_postfinance_upper['AMOUNT']==$cart->getOrderTotal(true,3)){
            
            $Postfinance = new Postfinance();
            
            // si le panier n'a pas été converti
-            $orderExists = (bool)Db::getInstance()->getValue('SELECT count(*) FROM `'._DB_PREFIX_.'orders` WHERE `id_cart`='.pSQL($get_id_cart));
+            $orderExists = (bool)Db::getInstance()->getValue('SELECT count(*) FROM `'._DB_PREFIX_.'orders` WHERE `id_cart`='. (int) $get_id_cart);
            if(

Other recommendations

Upgrade PrestaShop to the latest version to disable multiquery execution (separated by “;”)
Change the default database prefix ps_ by a new longer arbitrary prefix. Nevertheless, be warned that this is useless against blackhats with DBA senior skilled because of a design vulnerability in DBMS
Activate OWASP 942’s rules on your WAF (Web application firewall), be warned that you will probably break your backoffice and you will need to pre-configure some bypasses against these set of rules.

Timeline

Date

Action

2023-04-12

Sensitive SQL parameter analysed by 202 ecommerce

2023-04-14

Contact the author

2023-04-14

Request a CVE ID

2023-04-14

The author confirm a fix is available on 17.1.14

2023-06-13