CVE-2024-50685
📋 TL;DR
This CVE describes an Insecure Direct Object Reference (IDOR) vulnerability in SunGrow iSolarCloud's powerStationService API model. Attackers can manipulate object references to access unauthorized data or functionality. All SunGrow iSolarCloud users before the October 31, 2024 remediation are affected.
💻 Affected Systems
- SunGrow iSolarCloud
📦 What is this software?
Isolarcloud by Sungrowpower
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of solar monitoring and control systems, allowing attackers to manipulate power generation data, disrupt operations, or access sensitive customer information across multiple installations.
Likely Case
Unauthorized access to other users' solar power station data, including generation statistics, configuration details, and potentially control functions.
If Mitigated
Limited impact with proper authentication and authorization controls that validate user permissions for each object reference.
🎯 Exploit Status
IDOR vulnerabilities typically require some level of access but are easy to exploit once authenticated. Attackers can manipulate object IDs in API requests.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Remediation applied by October 31, 2024
Vendor Advisory: https://en.sungrowpower.com/security-notice-detail-2/6118
Restart Required: No
Instructions:
1. Contact SunGrow support for the latest security update. 2. Apply the remediation provided by SunGrow. 3. Verify that the powerStationService API now validates user permissions for all object references.
🔧 Temporary Workarounds
API Access Restriction
allRestrict access to the powerStationService API endpoints to only authorized users and systems.
Input Validation
allImplement server-side validation to ensure users can only access objects they're authorized for.
🧯 If You Can't Patch
- Implement strict access controls and monitoring for the powerStationService API endpoints
- Deploy a web application firewall (WAF) with IDOR protection rules
🔍 How to Verify
Check if Vulnerable:
Test if you can access other users' power station data by manipulating object IDs in API requests to the powerStationService endpoint.Check Version:
Check with SunGrow support for your current version and remediation status.Verify Fix Applied:
Verify that attempting to access unauthorized objects via the powerStationService API returns proper authorization errors.📡 Detection & Monitoring
Log Indicators:
- Multiple failed authorization attempts on powerStationService API
- Unusual access patterns to power station objects
Network Indicators:
- Unusual API requests to powerStationService with manipulated object IDs
- Traffic from unexpected sources to solar monitoring endpoints
SIEM Query:
source="iSolarCloud" AND endpoint="powerStationService" AND (status=403 OR user_id!=requested_object_owner)