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[CVE-2023-33666] Improper neutralization of a SQL parameter in aioptimizedcombinations from ai-dev module for PrestaShop
In the module “Opimized combinations” (aioptimizedcombinations) for PrestaShop, an attacker can perform a SQL injection up to 0.1.2. Release 0.1.3 fixed this security issue.
Summary
- CVE ID: CVE-2023-33666
- Published at: 2023-08-03
- Advisory source: Friends-Of-Presta.org
- Platform: PrestaShop
- Product: aioptimizedcombinations
- Impacted release: <= 0.1.2 (0.1.3 fixed issue)
- Product author: ai-dev
- Weakness: CWE-89
- Severity: critical (9.8)
Description
Up to 0.1.3, a sensitive SQL call in file includes/ajax.php can be executed with a trivial http call and exploited to forge a blind SQL injection throught the POST or GET submitted attributes variables.
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/modules/aioptimizedcombinations/includes/ajax.php
+++ b/modules/aioptimizedcombinations/includes/ajax.php
switch (Tools::getValue('action'))
{
case 'getCombination' :
/* If no product or combination, we quit */
if (!Tools::getIsset('product') || !Tools::getIsset('attributes'))
die();
$attributes = explode(',', Tools::getValue('attributes'));
/* Get combination id */
$combination_data = Db::getInstance()->getRow(
'SELECT COUNT(*) as number, pa.id_product_attribute FROM '._DB_PREFIX_.'product_attribute AS pa LEFT JOIN '._DB_PREFIX_.'product_attribute_combination AS pac ON pa.id_product_attribute = pac.id_product_attribute WHERE pa.id_product = '.
- (int)Tools::getValue('product').' AND pac.id_attribute IN ('.pSQL(Tools::getValue('attributes')).') GROUP BY pa.id_product_attribute HAVING number = '.count($attributes)
+ (int)Tools::getValue('product').' AND pac.id_attribute IN ('.implode(',', array_map('intval', explode(',', Tools::getValue('attributes')))).') GROUP BY pa.id_product_attribute HAVING number = '.count($attributes)
);
Other recommandations
- Upgrade PrestaShop to the latest version to disable multiquery execution (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 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 these set of rules.
Timeline
| Date | Action |
|---|---|
| 2023-05-08 | Vunlnerability found during a audit by 202 ecommerce |
| 2023-05-10 | Contact the author |
| 2023-05-12 | The author confirm the issue and supply a fixed release |
| 2023-05-12 | Request a CVE ID |
| 2023-08-03 | Publication of this advisory |
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.