[CVE-2023-46356] Improper neutralization of SQL parameter in Bl Modules – CSV Feeds PRO module for PrestaShop

PrestaShop Security Advisory

In the module “CSV Feeds PRO” (csvfeeds) up to version 2.5.2 from Bl Modules for PrestaShop, a guest can perform SQL injection in affected versions.

Summary

  • CVE ID: CVE-2023-46356
  • Published at: 2023-10-26
  • Platform: PrestaShop
  • Product: csvfeeds
  • Impacted release: <= 2.5.2 (2.6.1 fixed the vulnerability)
  • Product author: Bl Modules
  • Weakness: CWE-89
  • Severity: critical (9.8)

Description

The method SearchApiCsv::getProducts() has sensitive SQL call that can be executed with a trivial http call and exploited to forge a SQL injection.

WARNING : this module is not yet attacked but be warned that another module of the same author with exactly the same critical issue is currently actively targeted, so patch quickly.

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

Proof of concept

curl -v 'https://preprod.X/modules/csvfeeds/search.php?s=1&s_p=1);select(0x73656C65637420736C656570283432293B)INTO@a;prepare`b`from@a;execute`b`;--'

Patch from 2.5.2

--- 2.5.2/modules/csvfeeds/search.php
+++ XXXXX/modules/csvfeeds/search.php
$moduleImgPath = '../modules/csvfeeds/views/img/';
        if (!empty($selected_products) && $selected_products != 'undefined') {
-           $where_selected = ' AND l.id_product NOT IN ('.$selected_products.')';
+           $where_selected = ' AND l.id_product NOT IN ('.implode(',', array_map('intval', explode(',', $selected_products))).')';
        }

Other recommendations

  • It’s recommended to upgrade to the latest version of the module csvfeeds.
  • 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

DateAction
2023-08-27Issue discovered during a code review by TouchWeb.fr
2023-08-27Contact PrestaShop Addons security Team to confirm version scope by author
2023-08-29PrestaShop Addons security Team confirm versions scope
2023-09-18Author provide a patch
2023-10-17Request a CVE ID
2023-10-26Publish this security advisory

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