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[CVE-2023-26865] Improper neutralization of a SQL parameter in bdroppy module for PrestaShop
In the module “BDroppy- The best brands for your dropshipping business” (bdroppy) for PrestaShop, an attacker can perform a blind SQL injection before 2.2.27. Release 2.2.28 fixed this security issue.
Summary
- CVE ID: CVE-2023-26865
- Published at: 2023-04-20
- Advisory source: Friends-Of-Presta.org
- Platform: PrestaShop
- Product: bdroppy
- Impacted release: < 2.2.28 (2.2.28 fix the security issue)
- Product author: BDroppy
- Weakness: CWE-89
- Severity: critical (9.8)
Description
Befor release 2.2.28, a sensitive SQL calls in class BdroppyCronModuleFrontController::importProducts() can be executed with a trivial http call and exploited to forge a blind SQL injection through the POST or GET submitted “reference” variable.
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
Proof of concept
curl -v 'https://domain.tld/module/bdroppy/cron?reference=a%27%29%3BSELECT%20SLEEP%2825%29%3B--'
Patch
--- a/bdroppy/controllers/front/cron.php
+++ b/bdroppy/controllers/front/cron.php
@@ -181,7 +181,7 @@ class BdroppyCronModuleFrontController e
$query = new DbQuery();
$query->select('*')
->from('bdroppy_remoteproduct')
- ->where("reference = '" . Tools::getValue('reference') . "'");
+ ->where("reference = '" . pSQL(Tools::getValue('reference')) . "'");
$items = $db->executeS($query);
}
foreach ($items as $item) {
Other recommendations
- It’s recommended to upgrade the module beyond 2.13.28.
- 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.
Timeline
| Date | Action |
|---|---|
| 2023-02-10 | Vulnerability discovered during a code reviews by 202 ecommerce |
| 2023-02-12 | Contact the author |
| 2023-02-12 | Request a CVE ID from Mitre.org |
| 2023-02-17 | Re-try to contact the author |
| 2023-03-16 | Recieved the CVE ID |
| 2023-03-20 | Re-try to contact the author via social network and propose 30, 60 or 90 days of delay before discolse the vulnerability |
| 2023-03-21 | The author confirm the vulnerability and push a fix |
| 2023-04-20 | Publish this advisory and the CVE |
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.