CVE-2020-15243
📋 TL;DR
This CVE describes an authentication bypass vulnerability in Smartstore Web API due to a missing authentication attribute. Attackers can access administrative API endpoints without credentials, potentially compromising the entire e-commerce platform. Only Smartstore shops running versions 4.0.0 or 4.0.1 with the Web API plugin enabled are affected.
💻 Affected Systems
- Smartstore
📦 What is this software?
Smartstore by Smartstore
Smartstore by Smartstore
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of the Smartstore instance allowing unauthorized access to all API endpoints, potentially leading to data theft, account takeover, or full administrative control.
Likely Case
Unauthorized access to sensitive customer data, order information, and administrative functions through the Web API endpoints.
If Mitigated
No impact if the Web API plugin is disabled or proper authentication controls are implemented.
🎯 Exploit Status
Exploitation requires knowledge of API endpoints but no authentication, making it straightforward for attackers familiar with Smartstore.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 4.0.x branch
Vendor Advisory: https://github.com/smartstore/SmartStoreNET/security/advisories/GHSA-8g9m-jx26-qp4h
Restart Required: Yes
Instructions:
1. Merge repository with 4.0.x branch OR 2. Overwrite SmartStore.Web.Framework.dll in /bin directory with patched version from 4.0.x branch
🔧 Temporary Workarounds
Disable Web API Plugin
allUninstall or deactivate the Web API plugin to remove the vulnerable component
Navigate to Smartstore admin panel > Plugins > Local plugins > Find Web API plugin > Deactivate/Uninstall
🧯 If You Can't Patch
- Disable Web API plugin immediately
- Implement network-level restrictions to block access to Web API endpoints from untrusted networks
🔍 How to Verify
Check if Vulnerable:
Check if running Smartstore 4.0.0 or 4.0.1 AND Web API plugin is active in admin panelCheck Version:
Check Smartstore version in admin dashboard or web.config fileVerify Fix Applied:
Verify SmartStore.Web.Framework.dll version matches patched version from 4.0.x branch OR Web API plugin is disabled📡 Detection & Monitoring
Log Indicators:
- Unauthorized access attempts to /api/ endpoints
- API requests without authentication tokens
Network Indicators:
- Unusual API traffic patterns
- Requests to administrative API endpoints from unauthorized sources
SIEM Query:
source="smartstore" AND (uri_path="/api/*" AND NOT auth_token=*)