CVE-2025-7915
📋 TL;DR
This critical SQL injection vulnerability in Chanjet CRM 1.0 allows attackers to execute arbitrary SQL commands through the /mail/mailinactive.php login page component. Remote attackers can potentially access, modify, or delete database content. All users running Chanjet CRM 1.0 with the vulnerable component are affected.
💻 Affected Systems
- Chanjet CRM
📦 What is this software?
Chanjet Crm by Chanjet
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise leading to data theft, authentication bypass, remote code execution, or system takeover.
Likely Case
Unauthorized data access, credential theft, and potential privilege escalation within the CRM system.
If Mitigated
Limited impact with proper input validation, WAF rules, and database permissions restricting damage to non-critical data.
🎯 Exploit Status
Exploit details are publicly disclosed on GitHub. Remote exploitation without authentication makes this easily weaponizable.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: None found
Restart Required: No
Instructions:
No official patch available. Consider upgrading to a newer version if available, or implement workarounds.
🔧 Temporary Workarounds
Input Validation and Sanitization
allImplement parameterized queries and input validation for all user inputs in the mailinactive.php file.
Modify PHP code to use prepared statements with PDO or mysqli
Web Application Firewall Rules
allDeploy WAF rules to block SQL injection patterns targeting the vulnerable endpoint.
Add WAF rule: block requests to /mail/mailinactive.php containing SQL keywords
🧯 If You Can't Patch
- Restrict network access to the CRM system using firewall rules
- Implement database user with minimal privileges for the application
🔍 How to Verify
Check if Vulnerable:
Test the /mail/mailinactive.php endpoint with SQL injection payloads (e.g., ' OR '1'='1) and monitor for unexpected database responses.Check Version:
Check CRM version in admin panel or configuration filesVerify Fix Applied:
Retest with SQL injection payloads after implementing fixes; successful payloads should be rejected or sanitized.📡 Detection & Monitoring
Log Indicators:
- Unusual SQL queries in database logs
- Multiple failed login attempts with SQL patterns
- Access to /mail/mailinactive.php with suspicious parameters
Network Indicators:
- HTTP requests to /mail/mailinactive.php containing SQL keywords (SELECT, UNION, etc.)
- Abnormal database connection patterns from web server
SIEM Query:
source="web_logs" AND uri="/mail/mailinactive.php" AND (payload="' OR" OR payload="UNION" OR payload="SELECT")