SQL injection vulnerability found in the module “Shoppingfeed PrestaShop Plugin (Feed&Order)” (aka shoppingfeed) for PrestaShop from 1.4.0 to 1.8.2. (1.8.3 fix the issue) allow a remote attacker to gain privileges.

Summary

Description

From 1.4.0 to 1.8.2 (1.8.3 fix the issue), a sensitive SQL call in ShoppingfeedToken::findByToken() can be executed with a trivial http call and exploited to forge a blind SQL injection through the POST or GET submitted variable token.

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/shoppingfeed/classes/ShoppingfeedToken.php
+++ b/modules/shoppingfeed/classes/ShoppingfeedToken.php
@@ -138,7 +138,7 @@ public function findByToken($token)
         $query = (new DbQuery())
             ->select('*')
             ->from(self::$definition['table'])
-            ->where("content = '$token'")
+            ->where('content = "' . pSQL($token) . '"')
         ;
 
         return Db::getInstance(_PS_USE_SQL_SLAVE_)->getRow($query);

See also

Other recommendations

  • It’s recommended to upgrade the module beyond 1.8.3.
  • 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
2022-10-14 Wargan Solutions discover the vulnerability during an audit ordered by Shoppingfeed and 202 ecommerce
2022-10-14 Publish the patch release 1.8.3
2022-10-18 Shoppingfeed send a first newsletter to invite all merchands to upgrade up to 1.9.0
2022-12-12 Shoppingfeed send a second reminder to invite all merchands to upgrade
2022-03-28 Shoppingfeed send a third reminder to invite all merchands to upgrade up to 1.9.3
2023-04-18 Publish this security advisory