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Friends-Of-Presta Security Advisories
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IMPORTANT NOTICE: DO NOT REPORT VULNERABILITIES SOLELY TO THE AUTHOR OR
MARKETPLACE.

We urge you to report any vulnerabilities directly to us. Our mission is to
ensure the safety and security of the PrestaShop ecosystem. Unfortunately, many
module developers may not always recognize or acknowledge the vulnerabilities in
their code, whether due to lack of awareness, or inability to properly evaluate
the associated risk, or other reasons.

Given the rise in professional cybercrime networks actively seeking out these
vulnerabilities, it's crucial that any potential threats are promptly addressed
and the community is informed. The most effective method to do this is by
publishing a CVE, like the one provided below.

Should you discover any vulnerabilities, please report them to us at:
report[@]security-presta.org.

Every vulnerability report helps make the community more secure, and we are
profoundly grateful for any information shared with us.


[CVE-2023-34575] IMPROPER NEUTRALIZATION OF SQL PARAMETER IN OPART SAVE CART FOR
PRESTASHOP

Sep 19, 2023 • #modules • critical (9.8) • Opart, TouchWeb.fr,
Friends-Of-Presta.org

In the module “Opart Save Cart” (opartsavecart) up to version 2.0.7 from Opart
for PrestaShop, a guest can perform SQL injection in affected versions.


SUMMARY

 * CVE ID: CVE-2023-34575
 * Published at: 2023-09-19
 * Platform: PrestaShop
 * Product: opartsavecart
 * Impacted release: <= 2.0.7 (2.0.8 fixed the vulnerability)
 * Product author: Opart
 * Weakness: CWE-89
 * Severity: critical (9.8)


DESCRIPTION

Methods OpartSaveCartDefaultModuleFrontController::initContent() and
OpartSaveCartDefaultModuleFrontController::displayAjaxSendCartByEmail() has
sensitive SQL calls that can be executed with a trivial http call and exploited
to forge a SQL injection.

This exploit uses a PrestaShop front controller and most attackers can conceal
the module controller’s path during the exploit, so you will never know within
your conventional frontend logs that it exploits this vulnerability. You will
only see “POST /” inside your conventional frontend logs. Activating the
AuditEngine of mod_security (or similar) is the only way to get data to confirm
this exploit.


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 from the associated PrestaShop
 * Copy/paste data from sensitive tables to FRONT to expose tokens and unlock
   admins’s ajax scripts
 * Rewrite SMTP settings to hijack emails


PATCH FROM 2.0.7

--- 2.0.7/modules/opartsavecart/controllers/front/default.php
+++ 2.0.8/modules/opartsavecart/controllers/front/default.php
...
                     } else {
                         $idCart = Tools::getValue('opartCartId');
-                        $sql = "DELETE FROM `" . _DB_PREFIX_ . "opartsavecart` WHERE id_cart=" . $idCart . " AND id_customer=" . $idCustomer;
+                        $sql = "DELETE FROM `" . _DB_PREFIX_ . "opartsavecart` WHERE id_cart=" . (int)$idCart . " AND id_customer=" . (int)$idCustomer;
                         Db::getInstance()->execute($sql);
...
                         //check if cart exist for this customer
                         if (Tools::getIsset('opartCartId') && Tools::getValue('opartCartId')) {
                             $idCart = Tools::getValue('opartCartId');
-                            $sql = "SELECT * FROM `" . _DB_PREFIX_ . "opartsavecart` WHERE id_customer=" . $idCustomer . " AND id_cart=" . $idCart;
+                            $sql = "SELECT * FROM `" . _DB_PREFIX_ . "opartsavecart` WHERE id_customer=" . (int)$idCustomer . " AND id_cart=" . (int)$idCart;
                         } else if (Tools::getIsset('token') && Tools::getValue('token')) {
                             $token = Tools::getValue('token');
-                            $sql = "SELECT * FROM `" . _DB_PREFIX_ . "opartsavecart` WHERE token = '" . $token . "'";
+                            $sql = "SELECT * FROM `" . _DB_PREFIX_ . "opartsavecart` WHERE token = '" . pSQL($token) . "'";
                         }
...

             if (Validate::isEmail($email)) {
-                $sql = "SELECT * FROM `" . _DB_PREFIX_ . "opartsavecart` WHERE token = '" . $token . "'";
+                $sql = "SELECT * FROM `" . _DB_PREFIX_ . "opartsavecart` WHERE token = '" . pSQL($token) . "'";
                 $result = Db::getInstance()->getRow($sql);



OTHER RECOMMENDATIONS

 * It’s recommended to upgrade to the latest version of the module
   opartsavecart.
 * Upgrade PrestaShop to the latest version to disable multiquery executions
   (separated by “;”) - be warned that this functionality WILL NOT protect your
   SHOP against injection SQL which uses the UNION clause to steal data.
 * Change the default database prefix ps_ with a new longer, arbitrary prefix.
   Nevertheless, be warned that this is useless against blackhats with DBA
   senior skills 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 this set of rules.


TIMELINE

Date Action 2023-05-23 Issue discovered during a code review by TouchWeb.fr
2023-05-23 Contact Author to confirm version scope 2023-05-23 Author confirms
versions scope 2023-05-24 Request CVE ID 2023-09-05 Received CVE ID 2023-09-19
Publish this security advisory

Opart thanks TouchWeb for its courtesy and its help after the vulnerability
disclosure.


LINKS

 * Author product page
 * National Vulnerability Database

DISCLAIMER: The French Association Friends Of Presta (FOP) acts as an
intermediary to help hosting this advisory. While we strive to ensure the
information and advice provided are accurate, FOP cannot be held liable for any
consequences arising from reported vulnerabilities or any subsequent actions
taken.

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