CVE-2020-9200
📋 TL;DR
This CSV injection vulnerability in Huawei iManager NetEco 6000 allows attackers with common privileges to inject malicious content into CSV files through insufficient input validation. The vulnerability affects version V600R021C00 and could lead to data manipulation or code execution when CSV files are opened in vulnerable spreadsheet applications. Users of Huawei iManager NetEco 6000 V600R021C00 are affected.
💻 Affected Systems
- Huawei iManager NetEco 6000
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution on systems opening the malicious CSV files, potentially leading to complete system compromise and data exfiltration.
Likely Case
Data manipulation, formula injection leading to spreadsheet corruption, or limited code execution in spreadsheet applications.
If Mitigated
Limited impact with proper input validation and CSV file handling restrictions in place.
🎯 Exploit Status
Requires authenticated access with common privileges and specific CSV operations. Exploitation depends on how CSV files are processed by end applications.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not specified in advisory - contact Huawei for updated version
Vendor Advisory: https://www.huawei.com/en/psirt/security-advisories/huawei-sa-20201209-01-csvinjection-en
Restart Required: Yes
Instructions:
1. Contact Huawei support for security update. 2. Apply the security patch provided by Huawei. 3. Restart the iManager NetEco 6000 system. 4. Verify the patch is applied successfully.
🔧 Temporary Workarounds
Input Validation Enhancement
allImplement strict input validation for CSV-related parameters to prevent formula injection.
CSV File Handling Restrictions
allConfigure spreadsheet applications to disable automatic formula execution when opening CSV files.
🧯 If You Can't Patch
- Restrict CSV file export/import capabilities to trusted users only
- Implement network segmentation to isolate iManager NetEco 6000 systems
🔍 How to Verify
Check if Vulnerable:
Check if running Huawei iManager NetEco 6000 version V600R021C00 via system administration interface.Check Version:
Check via iManager NetEco 6000 web interface or system administration consoleVerify Fix Applied:
Verify version has been updated from V600R021C00 to a patched version provided by Huawei.📡 Detection & Monitoring
Log Indicators:
- Unusual CSV export/import operations
- Multiple failed CSV operations from single user
- CSV files with formula-like content
Network Indicators:
- Unusual CSV file transfers from iManager system
- CSV files containing formula syntax in network traffic
SIEM Query:
source="imanager" AND (operation="csv_export" OR operation="csv_import") AND user_privilege="common" AND result="success"