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[CVE-2023-25206] Multiple improper neutralization of SQL parameters in ws_productreviews module for PrestaShop
In the module “Advanced Reviews: Photos, Reminder, Google Snippets” (ws_productreviews), an anonymous user can perform SQL injection in affected versions. 3.6.2 fixed vulnerabilities.
Summary
- CVE ID: CVE-2023-25206
- Published at: 2023-03-14
- Advisory source: Friends-of-Presta.org
- Platform: PrestaShop
- Product: ws_productreviews
- Impacted release: < 3.6.2
- Product author: Anastasia
- Weakness: CWE-89
- Severity: critical (9.8)
Description
In ws_productreviews module for PrestaShop up to 3.6.2, multiple sensitives SQL calls in class ProductReviews::getByProduct() (or method getLastReviews(), getByValidate(), ProductReviews::getByValidate(), …) can be executed with a trivial http call and exploited to forge a blind SQL injection.
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/ws_productreviews/default?r_sort=date_add%60%3BSELECT%20SLEEP%2825%29%23'
curl -v 'https://domain.tld/module/ws_productreviews/default?action=getList&r_sort=date_add%60%3BSELECT%20SLEEP%2825%29%23'
Patch
--- a/ProductReviews.php
+++ b/ProductReviews.php
@@ -106,6 +106,9 @@ class ProductReviews extends ObjectModel
*/
public static function getByProduct($id_product, $start = 1, $step = 5, $sort = 'date_add', $filtre = false, $id_customer = null)
{
+ if (!Validate::isOrderBy($sort)) {
+ $sort = 'date_add';
+ }
if (!Validate::isUnsignedId($id_product)) {
return false;
}
@@ -124,7 +127,7 @@ class ProductReviews extends ObjectModel
LEFT JOIN `'._DB_PREFIX_.'customer` c ON c.`id_customer` = pc.`id_customer`
WHERE pc.`id_product` = '.(int)($id_product).($validate == '1' ? ' AND pc.`validate` = 1' : '').($filtre ? ' AND pc.`grade` = '.$filtre : '').'
AND pc.`id_shop` = '.(int)Context::getContext()->shop->id.'
- ORDER BY pc.`'.$sort.'` DESC
+ ORDER BY pc.`'.bqSQL($sort).'` DESC
LIMIT '.(int)($start).' ,'.(int)($step)
);
@@ -135,26 +138,11 @@ class ProductReviews extends ObjectModel
public static function getLastReviews($start = 1, $step = 5, $sort = 'date_add', $id_customer = null, $id_category = false)
{
+ if (!Validate::isOrderBy($sort)) {
+ $sort = 'date_add';
+ }
$validate = Configuration::get('WS_PRODUCTREVIEWS_MODERATE');
$reviews = Db::getInstance(_PS_USE_SQL_SLAVE_)->executeS(
'SELECT pc.`id_product_comment`, pc.`str_img_name`, pc.`id_product`, pl.`name`, pc.`ip`, pc.`recommend`, pc.`id_customer`,
(SELECT count(*) FROM `'._DB_PREFIX_.'ws_product_comment_usefulness` pcu WHERE pcu.`id_product_comment` = pc.`id_product_comment` AND pcu.`usefulness` = 1) as total_useful,
@@ -170,7 +158,7 @@ die();
($validate == '1' ? ' pc.`validate` = 1' : '1').
' AND pc.`id_shop` = '.(int)Context::getContext()->shop->id.
($id_category != false ? ' AND cp.`id_category` = '.(int) $id_category : ' ').
- ' ORDER BY pc.`'.$sort.'` DESC
+ ' ORDER BY pc.`'.bqSQL($sort).'` DESC
LIMIT '.(int)($start).' ,'.(int)($step)
);
@@ -436,7 +424,7 @@ die();
WHERE `id_product` = '.(int)($id_product).
($validate == '1' ? ' AND `validate` = 1' : '').
' AND pc.`id_shop` = '.(int)Context::getContext()->shop->id.
- ($r_filtre ? ' AND pc.`grade` = '.$r_filtre : ''));
+ ($r_filtre ? ' AND pc.`grade` = "'.pSQL($r_filtre) : '"'));
return $result;
}
@@ -489,6 +477,12 @@ die();
*/
public static function getByValidate($validate = '0', $deleted = false, $sort = 'date_add', $sort_way = 'DESC', $filters = false)
{
+ if (!Validate::isOrderBy($sort)) {
+ $sort = 'date_add';
+ }
+ if (!Validate::isOrderWay($sort_way)) {
+ $sort_way = 'DESC';
+ }
$sql = '
SELECT pc.`id_product_comment`, pc.`id_product`, pc.`ip`, pc.`str_img_name`, IF(c.id_customer, CONCAT(c.`firstname`, \' \', c.`lastname`), pc.customer_name) customer_name, pc.`title`, pc.`content`, pc.`grade`, pc.`date_add`, pc.`respond`, pc.`recommend`,
v.`id_voucher`, pl.`name`
@@ -504,13 +498,13 @@ die();
$key = Tools::substr($key, 7);
if ($key == 'date_add') {
if ($value[0] != null) {
- $sql .= ' AND pc.`'.$key.'` >= "'.$value[0].'" ';
+ $sql .= ' AND pc.`'.bqSQL($key).'` >= "'.pSQL($value[0]).'" ';
}
if ($value[1] != null) {
- $sql .= ' AND pc.`'.$key.'` <= "'.$value[1].'" ';
+ $sql .= ' AND pc.`'.bqSQL($key).'` <= "'.pSQL($value[1]).'" ';
}
} else {
- $sql .= ' AND '.$key.' = "'.$value.'" ';
+ $sql .= ' AND `'.bqSQL($key).' = "'.pSQL($value).'" ';
}
}
}
@@ -554,6 +548,12 @@ die();
*/
public static function getAll($sort = 'date_add', $sort_way = 'DESC', $filters = false)
{
+ if (!Validate::isOrderBy($sort)) {
+ $sort = 'date_add';
+ }
+ if (!Validate::isOrderWay($sort_way)) {
+ $sort_way = 'DESC';
+ }
$sql = '
SELECT pc.`id_product_comment`, pc.`id_product`, pc.`str_img_name`, pc.`ip`, IF(c.id_customer, CONCAT(c.`firstname`, \' \', c.`lastname`), pc.customer_name) customer_name, pc.`title`, pc.`content`, pc.`grade`, pc.`date_add`, pl.`name`
FROM `'._DB_PREFIX_.'ws_product_comment` pc
@@ -567,18 +567,17 @@ die();
$key = Tools::substr($key, 7);
if ($key == 'date_add') {
if ($value[0] != null) {
- $sql .= ' AND pc.`'.$key.'` >= "'.$value[0].'" ';
+ $sql .= ' AND pc.`'.bqSQL($key).'` >= "'.pSQL($value[0]).'" ';
}
if ($value[1] != null) {
- $sql .= ' AND pc.`'.$key.'` <= "'.$value[1].'" ';
+ $sql .= ' AND pc.`'.bqSQL($key).'` <= "'.pSQL($value[1]).'" ';
}
} else {
- $sql .= ' AND '.$key.' = "'.$value.'" ';
+ $sql .= ' AND '.bqSQL($key).'`= "'.pSQL($value).'" ';
}
}
}
}
-
if (!$sort) {
$sql .= ' ORDER BY `date_add` DESC ';
} elseif ($sort == 'location') {
Other recommendations
- It’s recommended to upgrade the module beyong 3.6.2.
- To help improve the security of your PrestaShop installation, we recommend upgrading to the latest version. One of the benefits of upgrading is that it will disable the use of multiquery executions (separated by semicolons). However, please be aware that this will not protect your shop against SQL injection attacks that use the UNION clause to steal data. Additionally, it’s important to note that PrestaShop includes a function called pSQL, which includes a strip_tags function. This helps protect your shop against Stored XSS (also known as XSS T2) of Category 1. If a pSQL function is missing, it could potentially expose your project to critical Stored XSS vulnerabilities due to edge cases. Therefore, it’s crucial to ensure that all relevant functions are properly implemented and used consistently throughout your project.
- 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 |
|---|---|
| 2022-12-20 | Issue discovered during a code reviews by 202 ecommerce |
| 2022-12-20 | Contact the author |
| 2023-01-11 | First fixed candidate from the author 3.6.1 |
| 2022-01-11 | Contact the author to fix others vulnerabilities |
| 2023-01-26 | Last fixes from the author |
| 2023-02-01 | Request a CVE ID |
| 2023-03-14 | Publication of this security 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.
This advisory and patch is licensed under CC BY-SA 4.0
