CVE-2023-31752
📋 TL;DR
CVE-2023-31752 is a critical SQL injection vulnerability in SourceCodester Employee and Visitor Gate Pass Logging System v1.0 that allows attackers to execute arbitrary SQL commands via the login.php endpoint. This affects all organizations using the vulnerable version of this gate pass logging software, potentially exposing sensitive employee and visitor data.
💻 Affected Systems
- SourceCodester Employee and Visitor Gate Pass Logging System
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise leading to data theft, authentication bypass, privilege escalation, and potential remote code execution on the database server.
Likely Case
Unauthorized access to sensitive employee and visitor records, authentication bypass, and potential data exfiltration.
If Mitigated
Limited impact with proper input validation and parameterized queries in place, though some information disclosure may still occur.
🎯 Exploit Status
Public proof-of-concept available on GitHub, exploitation requires minimal technical skill due to simple SQL injection vector.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: No known vendor advisory
Restart Required: No
Instructions:
No official patch available. Consider implementing parameterized queries in /employee_gatepass/classes/Login.php or migrating to alternative software.
🔧 Temporary Workarounds
Web Application Firewall (WAF)
allDeploy a WAF with SQL injection protection rules to block malicious requests.
Input Validation Filter
allImplement input validation to sanitize user inputs before processing.
🧯 If You Can't Patch
- Isolate the vulnerable system from internet access and restrict internal network access.
- Implement strict network segmentation and monitor all traffic to/from the vulnerable endpoint.
🔍 How to Verify
Check if Vulnerable:
Test the /employee_gatepass/classes/Login.php endpoint with SQL injection payloads like ' OR '1'='1 in username/password fields.Check Version:
Check the software version in the application interface or configuration files.Verify Fix Applied:
Verify that parameterized queries are implemented and SQL injection payloads no longer work.📡 Detection & Monitoring
Log Indicators:
- Unusual SQL error messages in application logs
- Multiple failed login attempts with SQL-like payloads
- Successful logins from unusual IP addresses
Network Indicators:
- HTTP POST requests to login.php containing SQL keywords (UNION, SELECT, etc.)
- Abnormal database query patterns
SIEM Query:
source="web_logs" AND uri="/employee_gatepass/classes/Login.php" AND (payload="' OR" OR payload="UNION" OR payload="SELECT")