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[CVE-2023-29630] Blind SQL injection vulnerability in Jms MegaMenu (jmsmegamenu) PrestaShop module
The module Jms MegaMenu (jmsmegamenu) from Joommasters contains a Blind SQL injection vulnerability. This module is for the PrestaShop e-commerce platform and mainly provided with joo masters PrestaShop themes
Summary
- CVE ID: CVE-2023-29630
- Published at: 2023-03-13
- Advisory source: Friends-Of-Presta
- Platform: PrestaShop
- Product: jmsmegamenu
- Impacted release: at least 1.1.x and 2.0.x
- Product author: Joommasters
- Weakness: CWE-89
- Severity: critical (9.8)
Description
ajax_jmsmegamenu.php hold sensitives SQL calls that can be executed with a trivial http call and exploited to forge a blind SQL injection.
WARNING : This exploit is actively used to deploy webskimmer to massively steal credit cards.
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
- Technical and personal data leaks
- Obtain admin access
- Remove all data of the linked PrestaShop
- Display sensitives tables to front-office to unlock potential admin’s ajax scripts of modules protected by token on the ecosystem
Patch
--- a/ajax_jmsmegamenu.php
+++ b/ajax_jmsmegamenu.php
@@ -29,1 +29,1 @@ function getPosts
- UPDATE `'._DB_PREFIX_.'jmsmegamenu` SET `params` = \''.Tools::getValue('params').'\'
+ UPDATE `'._DB_PREFIX_.'jmsmegamenu` SET `params` = \''.pSQL(Tools::getValue('params')).'\'
Timeline
| Date | Action |
|---|---|
| 2022-09-01 | Issue discovered during a pentest |
| 2023-02-17 | Contact the author |
| 2023-03-13 | Publish this security advisory |
Other recommendations
- 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_by a new longer arbitrary prefix. Nevertheless, be warned that this is useless against blackhats with DBA senior skill 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.
Links
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.