CVE-2024-39071
📋 TL;DR
CVE-2024-39071 is a critical SQL injection vulnerability in Fujian Kelixun software versions up to 7.6.6.4391 that allows attackers to execute arbitrary SQL commands via the send_event.php endpoint. This affects all organizations using vulnerable versions of Fujian Kelixun software, potentially exposing sensitive database information.
💻 Affected Systems
- Fujian Kelixun
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise leading to data theft, privilege escalation, and potential remote code execution through database functions.
Likely Case
Unauthenticated attackers extracting sensitive data, modifying database contents, or gaining administrative access to the application.
If Mitigated
Limited impact with proper input validation, parameterized queries, and network segmentation preventing exploitation.
🎯 Exploit Status
Public proof-of-concept demonstrates straightforward exploitation with minimal technical requirements.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: > 7.6.6.4391
Vendor Advisory: Not provided in references
Restart Required: Yes
Instructions:
1. Contact Fujian Kelixun vendor for patched version
2. Backup current installation and database
3. Apply vendor-provided patch or upgrade to version > 7.6.6.4391
4. Restart application services
5. Verify fix implementation
🔧 Temporary Workarounds
Web Application Firewall (WAF) Rules
allImplement WAF rules to block SQL injection patterns targeting send_event.php
# Example ModSecurity rule: SecRule ARGS "@detectSQLi" "id:1001,phase:2,deny,status:403,msg:'SQL Injection Attempt'"
# Add specific rule for send_event.php parameters
Endpoint Restriction
linuxRestrict access to send_event.php endpoint using network controls
# Apache: <Location /send_event.php> Require ip 10.0.0.0/8 </Location>
# Nginx: location ~ /send_event\.php$ { allow 10.0.0.0/8; deny all; }
🧯 If You Can't Patch
- Implement strict input validation and parameterized queries in send_event.php
- Deploy network segmentation to isolate vulnerable systems from critical assets
🔍 How to Verify
Check if Vulnerable:
Test send_event.php endpoint with SQL injection payloads or check version number against affected rangeCheck Version:
Check application version in admin interface or configuration filesVerify Fix Applied:
Test with SQL injection payloads that should be rejected or properly sanitized📡 Detection & Monitoring
Log Indicators:
- Unusual SQL queries in application logs
- Multiple failed requests to send_event.php with SQL syntax
- Database error messages containing SQL fragments
Network Indicators:
- HTTP POST requests to send_event.php with SQL keywords in parameters
- Unusual database connection patterns from web server
SIEM Query:
source="web_logs" AND uri="/send_event.php" AND (payload CONTAINS "UNION" OR payload CONTAINS "SELECT" OR payload CONTAINS "INSERT" OR payload CONTAINS "DELETE")