CVE-2025-51683
📋 TL;DR
An unauthenticated blind SQL injection vulnerability in mJobtime v15.7.2 allows attackers to execute arbitrary SQL statements via crafted POST requests to the /Default.aspx/update_profile_Server endpoint. This affects all systems running the vulnerable version of mJobtime time management software. Attackers can potentially extract, modify, or delete database contents without authentication.
💻 Affected Systems
- mJobtime
📦 What is this software?
Mjobtime by Mjobtime
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise leading to data theft, data destruction, or remote code execution via database functions, potentially resulting in full system takeover.
Likely Case
Data exfiltration of sensitive information (user credentials, personal data, business records) and potential privilege escalation within the application.
If Mitigated
Limited impact due to network segmentation, WAF filtering, or database user privilege restrictions preventing data modification or system access.
🎯 Exploit Status
The vulnerability requires only a crafted HTTP POST request with SQL injection payloads. Public advisory includes technical details that facilitate exploitation.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Unknown
Restart Required: No
Instructions:
1. Check mJobtime vendor website for security updates. 2. If patch is available, download and apply according to vendor instructions. 3. Test the fix in a non-production environment first. 4. Monitor vendor communications for official guidance.
🔧 Temporary Workarounds
Web Application Firewall (WAF) Rules
allImplement WAF rules to block SQL injection patterns targeting the vulnerable endpoint
Network Access Control
allRestrict access to the /Default.aspx/update_profile_Server endpoint to authorized IP addresses only
🧯 If You Can't Patch
- Implement strict input validation and parameterized queries in the application code
- Deploy the application behind a reverse proxy with SQL injection filtering and rate limiting
🔍 How to Verify
Check if Vulnerable:
Send a crafted POST request to /Default.aspx/update_profile_Server with SQL injection payloads and observe database errors or time delaysCheck Version:
Check the mJobtime application version in the web interface or configuration filesVerify Fix Applied:
Test the same SQL injection attempts after remediation - they should be blocked or return generic error messages without database details📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to /Default.aspx/update_profile_Server
- Database error messages in application logs
- Multiple failed login attempts following SQL injection patterns
Network Indicators:
- POST requests containing SQL keywords (SELECT, UNION, INSERT, etc.) to the vulnerable endpoint
- Unusual outbound database connections from the application server
SIEM Query:
source="web_server" AND (uri="/Default.aspx/update_profile_Server" AND (request_body CONTAINS "SELECT" OR request_body CONTAINS "UNION" OR request_body CONTAINS "INSERT"))