CVE-2020-20675
📋 TL;DR
Nuishop v2.3 contains a SQL injection vulnerability in the /goods/getGoodsListByConditions/ endpoint that allows attackers to execute arbitrary SQL commands. This affects all systems running the vulnerable version of Nuishop e-commerce software. Attackers can potentially access, modify, or delete database content.
💻 Affected Systems
- Nuishop
📦 What is this software?
Nuishop by Nuishop
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise leading to data theft, data destruction, or full system takeover via SQL injection to RCE chaining.
Likely Case
Unauthorized access to sensitive customer data, order information, and administrative credentials stored in the database.
If Mitigated
Limited impact with proper input validation and parameterized queries preventing SQL injection.
🎯 Exploit Status
Public exploit details available in referenced articles; SQL injection is straightforward to exploit.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: None found
Restart Required: No
Instructions:
1. Check for vendor updates or patches. 2. If no patch available, implement workarounds. 3. Consider upgrading to a newer version if available.
🔧 Temporary Workarounds
Input Validation Filter
allImplement strict input validation and sanitization for the vulnerable endpoint parameters.
Modify /goods/getGoodsListByConditions/ endpoint code to validate all input parameters
WAF Rule Implementation
allDeploy web application firewall rules to block SQL injection patterns targeting this endpoint.
Add WAF rule: block requests to /goods/getGoodsListByConditions/ containing SQL keywords
🧯 If You Can't Patch
- Implement network segmentation to isolate the Nuishop system from critical infrastructure
- Deploy intrusion detection systems to monitor for SQL injection attempts
🔍 How to Verify
Check if Vulnerable:
Test the /goods/getGoodsListByConditions/ endpoint with SQL injection payloads like ' OR '1'='1Check Version:
Check Nuishop version in admin panel or configuration filesVerify Fix Applied:
Retest with SQL injection payloads after implementing fixes; successful payloads should be rejected.📡 Detection & Monitoring
Log Indicators:
- Unusual SQL queries in database logs
- Multiple failed requests to /goods/getGoodsListByConditions/
Network Indicators:
- HTTP requests to /goods/getGoodsListByConditions/ containing SQL keywords
SIEM Query:
source="web_logs" AND uri="/goods/getGoodsListByConditions/" AND (payload="UNION" OR payload="SELECT" OR payload="OR")