CVE-2025-9140
📋 TL;DR
This SQL injection vulnerability in Shanghai Lingdang Information Technology's Lingdang CRM allows remote attackers to execute arbitrary SQL commands via the getvaluestring parameter in the /crm/crmapi/erp/tabdetail_moduleSave.php endpoint. Organizations using Lingdang CRM versions up to 8.6.4.7 are affected and could have their customer relationship management data compromised.
💻 Affected Systems
- Shanghai Lingdang Information Technology Lingdang CRM
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise leading to data theft, data manipulation, or complete system takeover via SQL injection escalation techniques.
Likely Case
Unauthorized access to sensitive CRM data including customer information, business records, and potentially authentication credentials stored in the database.
If Mitigated
Limited impact with proper network segmentation, database permissions, and input validation at other layers.
🎯 Exploit Status
Exploit code is publicly available on Exploit-DB (ID 52420), making this vulnerability easily exploitable by attackers with basic SQL injection knowledge.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 8.6.5.4 and later
Vendor Advisory: Not provided in CVE details
Restart Required: No
Instructions:
1. Backup CRM data and configuration. 2. Download version 8.6.5.4 or later from official vendor sources. 3. Follow vendor upgrade procedures. 4. Verify the patch by testing the vulnerable endpoint.
🔧 Temporary Workarounds
Web Application Firewall (WAF) Rules
allImplement WAF rules to block SQL injection patterns targeting the specific endpoint and parameter.
WAF-specific configuration commands vary by vendor
Endpoint Blocking
web_serverTemporarily block access to /crm/crmapi/erp/tabdetail_moduleSave.php if not required for business operations.
# Apache: RewriteRule ^/crm/crmapi/erp/tabdetail_moduleSave\.php$ - [F]
# Nginx: location ~ /crm/crmapi/erp/tabdetail_moduleSave\.php$ { return 403; }
🧯 If You Can't Patch
- Implement strict network segmentation to isolate the CRM system from sensitive networks and databases.
- Deploy database monitoring and alerting for unusual SQL queries originating from the CRM application.
🔍 How to Verify
Check if Vulnerable:
Check if the file /crm/crmapi/erp/tabdetail_moduleSave.php exists and test for SQL injection using safe testing methods or review application logs for injection attempts.Check Version:
Check CRM admin panel or configuration files for version information, typically found in admin interface or /version.php endpoint.Verify Fix Applied:
After upgrading to 8.6.5.4+, test the vulnerable endpoint with SQL injection payloads to confirm they are properly sanitized and rejected.📡 Detection & Monitoring
Log Indicators:
- Unusual SQL queries in database logs from CRM application
- Multiple failed login attempts or parameter manipulation in web server logs for the specific endpoint
- GET/POST requests to /crm/crmapi/erp/tabdetail_moduleSave.php with SQL keywords in parameters
Network Indicators:
- Unusual outbound database connections from web servers
- Traffic patterns showing SQL error messages in HTTP responses
SIEM Query:
source="web_logs" AND (url_path="/crm/crmapi/erp/tabdetail_moduleSave.php" AND (param="getvaluestring" AND value MATCH "('|\"|OR|UNION|SELECT)"))