CVE 2023-26861 Improper Neutralization of Several SQL Parameters in Vivawallet Module PrestaShop

The deprecated module “vivawallet” (name of the directory) edited by Viva Wallet prior to 1.7.9 for PrestaShop has several SQL injections.

Summary

  • CVE ID: CVE-2023-26861
  • Published at: 2023-07-11
  • Advisory source: Friends-Of-Presta.org
  • Vendor: PrestaShop
  • Product: vivawallet
  • Impacted release: < 1.7.9
  • Product author: Viva Wallet
  • Weakness: CWE-89
  • Severity: critical (9.8)

Description

The deprecated PrestaShop module VivaWallet removed on github on Oct 19, 2022 has sensitive SQL calls that can be exploited to manage a blind SQL injection on front controller fail.php, success.php and webhook.php.

This exploit uses a PrestaShop front controller and most attackers can conceal the module controller’s path during the exploit so you will never know within your conventional frontend logs that it exploits this vulnerability. You will only see “POST /” inside your conventional frontend logs. Activating the AuditEngine of mod_security (or similar) is the only way to get data to confirm this exploit.

CVSS base metrics

  • Attack vector: network
  • Attack complexity: low
  • Privilege required: low
  • 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

  • Obtain admin access
  • Remove data from the associated PrestaShop
  • Copy/paste data from sensitive tables to FRONT to exposed tokens and unlock admins’s ajax scripts
  • Rewrite SMTP settings to hijack emails

Patches

Advice: Remove vivawallet and install vivawalletsmartcheckout instead.

--- a/vivawallet/controllers/front/fail.php
+++ b/vivawallet/controllers/front/fail.php
@@ -9,7 +9,7 @@ class VivawalletFailModuleFrontController
   
 	  if(isset($_GET['s']) && $_GET['s']!=''){
 
-	  $OrderCode = stripslashes($_GET['s']);
+	  $OrderCode = pSQL($_GET['s']);
 	  
 	  $check_query = "select * from vivawallet_data where OrderCode='".$OrderCode."' ORDER BY id DESC";
 	  $check = Db::getInstance()->executeS($check_query, $array = true, $use_cache = 0);
--- a/vivawallet/controllers/front/success.php
+++ b/vivawallet/controllers/front/success.php
@@ -9,7 +9,7 @@ class VivawalletSuccessModuleFrontContro
 	
 	  if(isset($_GET['s']) && $_GET['s']!=''){
 	  $errors = '';
-	  $OrderCode = stripslashes($_GET['s']);
+	  $OrderCode = pSQL($_GET['s']);
 	  
 	  $check_query = "select * from vivawallet_data where OrderCode='".$OrderCode."' ORDER BY id DESC";
 	  $check = Db::getInstance()->executeS($check_query, $array = true, $use_cache = 0);
--- a/vivawallet/controllers/front/webhook.php
+++ b/vivawallet/controllers/front/webhook.php
@@ -65,7 +65,7 @@ class VivawalletWebhookModuleFrontContro
 		$OrderCode = $resultObj->EventData->OrderCode;
 		$TransactionId = $resultObj->EventData->TransactionId;
 		
-		$check_query = "select * from vivawallet_data where OrderCode='".$OrderCode."' ORDER BY id DESC";
+		$check_query = "select * from vivawallet_data where OrderCode='".pSQL($OrderCode)."' ORDER BY id DESC";
 	    $check = Db::getInstance()->executeS($transtat_query, $array = true, $use_cache = 0);
 	    $oid = $transtat[0]['ref'];
 		
@@ -106,11 +106,11 @@ class VivawalletWebhookModuleFrontContro
 	    $currency = $this->context->currency;
 	    $total = (float)$cart->getOrderTotal(true, Cart::BOTH);
 	
-		  $transtat_query = "select * from vivawallet_data where OrderCode='".$OrderCode."' ORDER BY id DESC";
+		  $transtat_query = "select * from vivawallet_data where OrderCode='".pSQL($OrderCode)."' ORDER BY id DESC";
 		  $transtat = Db::getInstance()->executeS($transtat_query, $array = true, $use_cache = 0);
 		  
 		  if($transtat[0]['order_state']=='I' && $StatusId=='F'){
-		  $update_query = "update vivawallet_data set order_state='P' where OrderCode='".$OrderCode."'";
+		  $update_query = "update vivawallet_data set order_state='P' where OrderCode='".pSQL($OrderCode)."'";
 		  $update = Db::getInstance()->execute($update_query);
 		
 		  $details = array(

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

DateAction
2023-02-12Vulnerabity discovered during an audit by Touch Web and 202 ecommerce
2023-02-23Contact the author
2023-02-23Response of the author that a new module replace the impacted module
2023-02-25Inform the author that a CVE ID is requested
2023-03-17Propose a delay of 90 days before disclosing the CVE
2023-03-17Request a CVE ID
2023-07-17Publication of this CVE

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