In the module “Account Manager - Sales Representative & Dealers - CRM” (prestasalesmanager) up to version 8.0.0 from Presta World for PrestaShop, a guest can delete all files of the system.

Summary

  • CVE ID: CVE-2024-25842
  • Published at: 2024-02-29
  • Platform: PrestaShop
  • Product: prestasalesmanager
  • Impacted release: <= 8.0.0 (9.0.0 fixed the vulnerability)
  • Product author: Presta World
  • Weakness: CWE-73
  • Severity: critical (9.1)

Description

Methods PrestaSalesManagerChatboxModuleFrontController::uploadLogo() and PrestaSalesManagerMyAccountManagerTabModuleFrontController::postProcess has sensitive fopen call that can be executed with a trivial http call and exploited to delete all files of the system.

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: none
  • Integrity: high
  • Availability: high

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

Possible malicious usage

  • Delete all files from the Shop
  • Disable critical security configuration (.htaccess) to access private zone

Patch from 8.0.0

--- 8.0.0/modules/prestasalesmanager/controllers/front/chatbox.php
+++ 9.0.0/modules/prestasalesmanager/controllers/front/chatbox.php
...
-           $idTicket = Tools::getValue('id_enquiry');
+           $idTicket = (int) Tools::getValue('id_enquiry');

--- 8.0.0/modules/prestasalesmanager/controllers/front/myaccountmanagertab.php
+++ 9.0.0/modules/prestasalesmanager/controllers/front/myaccountmanagertab.php
...
-           $idHelpDesk = Tools::getValue('id_helpDesk');
+           $idHelpDesk = (int) Tools::getValue('id_helpDesk');

Other recommendations

  • It’s recommended to upgrade to the latest version of the module prestasalesmanager.
  • Activate OWASP 930’s rules on your WAF (Web application firewall) and adjust it for your PrestaShop

Timeline

Date Action
2023-10-26 Issue discovered during a code review by TouchWeb and Algo Factory
2023-10-26 Contact PrestaShop Addons security Team to confirm version scope by author
2023-10-30 PrestaShop Addons security Team confirms version scope
2024-01-16 Author provide patch
2024-02-22 Received CVE ID
2024-02-29 Publish this security advisory