IMPORTANT NOTICE: DO NOT REPORT VULNERABILITIES SOLELY TO THE AUTHOR OR MARKETPLACE.
We urge you to report any vulnerabilities directly to us. Our mission is to ensure the safety and security of the PrestaShop ecosystem. Unfortunately, many module developers may not always recognize or acknowledge the vulnerabilities in their code, whether due to lack of awareness, or inability to properly evaluate the associated risk, or other reasons.
Given the rise in professional cybercrime networks actively seeking out these vulnerabilities, it's crucial that any potential threats are promptly addressed and the community is informed. The most effective method to do this is by publishing a CVE, like the one provided below.
Should you discover any vulnerabilities, please report them to us at: report[@]security-presta.org or visit https://security-presta.org for more information.
Every vulnerability report helps make the community more secure, and we are profoundly grateful for any information shared with us.
[CVE-2023-27844] Improper neutralization of SQL parameter in leurlrewrite for PrestaShop
In the module “LitExtension Url Plugin” (leurlrewrite) for PrestaShop, an attacker can perform SQL injection up to 1.0. Even though the module has been patched in version 1.0, the version number was not incremented at the time. We consider the issue resolved in versions after 1.0.
Summary
- CVE ID: CVE-2023-27844
- Published at: 2023-04-13
- Advisory source: Friends-Of-Presta.org
- Platform: PrestaShop
- Product: leurlrewrite
- Impacted release: < 1.0
- Product author: LitExtension
- Weakness: CWE-89
- Severity: critical (9.8)
Description
A sensitive SQL call the overrided class Dispatcher::getController() can be executed with a trivial http call and exploited to forge a blind SQL injection through by calling a not found page.
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
IMPORTANT: apply the patch and reset the module or update the override/classes/Dispatcher.php of the PrestaShop manually.
--- a/modules/leurlrewrite/override/classes/Dispatcher.php
+++ b/modules/leurlrewrite/override/classes/Dispatcher.php
@@ -88,7 +88,7 @@ class Dispatcher extends DispatcherCore {
if ($controller == 'pagenotfound' || $controller == '404' || $controller === false) {
//$url_rewrite = preg_replace('#^' . preg_quote(Context::getContext()->shop->getBaseURI(), '#') . '#i', '', $_SERVER['REQUEST_URI']);
$url_rewrite = trim($this->request_uri, '/');
- $results = Db::getInstance()->executeS("SELECT id_desc, type, lang_code FROM " . _DB_PREFIX_ . "lecm_rewrite WHERE link_rewrite = '" . $url_rewrite . "'");
+ $results = Db::getInstance()->executeS("SELECT id_desc, type, lang_code FROM " . _DB_PREFIX_ . "lecm_rewrite WHERE link_rewrite = '" . pSQL($url_rewrite) . "'");
if ($results) {
$rewrite = array_pop($results);
$controller = $rewrite['type'];
--- a/override/classes/Dispatcher.php
+++ b/override/classes/Dispatcher.php
@@ -88,7 +88,7 @@ class Dispatcher extends DispatcherCore {
if ($controller == 'pagenotfound' || $controller == '404' || $controller === false) {
//$url_rewrite = preg_replace('#^' . preg_quote(Context::getContext()->shop->getBaseURI(), '#') . '#i', '', $_SERVER['REQUEST_URI']);
$url_rewrite = trim($this->request_uri, '/');
- $results = Db::getInstance()->executeS("SELECT id_desc, type, lang_code FROM " . _DB_PREFIX_ . "lecm_rewrite WHERE link_rewrite = '" . $url_rewrite . "'");
+ $results = Db::getInstance()->executeS("SELECT id_desc, type, lang_code FROM " . _DB_PREFIX_ . "lecm_rewrite WHERE link_rewrite = '" . pSQL($url_rewrite) . "'");
if ($results) {
$rewrite = array_pop($results);
$controller = $rewrite['type'];
Other recommendations
- It’s recommended to upgrade the module beyond 1.0.4.
- 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 |
|---|---|
| 2023-02-03 | Issue discovered during a code reviews by 202 ecommerce |
| 2023-02-03 | Contact the author |
| 2023-02-04 | The author publish a new package on its website |
| 2023-02-12 | Request a CVE ID |
| 2023-04-13 | Fix published on addons PrestaShop marketplace |
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.