CVE-2023-39551
📋 TL;DR
This vulnerability allows attackers to execute arbitrary SQL commands through the search functionality in PHPGurukul Online Security Guards Hiring System v1.0. Attackers can potentially access, modify, or delete database content. Organizations using this specific version of the software are affected.
💻 Affected Systems
- PHPGurukul Online Security Guards Hiring System
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise leading to data theft, data destruction, or full system takeover via SQL injection to execute arbitrary commands.
Likely Case
Unauthorized data access, extraction of sensitive information like user credentials, personal data, or administrative access.
If Mitigated
Limited impact with proper input validation, parameterized queries, and database permissions restricting unauthorized access.
🎯 Exploit Status
Exploitation requires admin access to reach the vulnerable endpoint, but SQL injection techniques are well-documented and easy to execute.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not available
Vendor Advisory: Not available
Restart Required: No
Instructions:
No official patch available. Consider upgrading to a newer version if available, or implement workarounds and input validation.
🔧 Temporary Workarounds
Input Validation and Sanitization
allImplement strict input validation and parameterized queries in search.php to prevent SQL injection.
Modify osghs/admin/search.php to use prepared statements with parameterized queries instead of direct string concatenation.
Web Application Firewall (WAF)
allDeploy a WAF to block SQL injection attempts targeting the vulnerable endpoint.
Configure WAF rules to detect and block SQL injection patterns at /osghs/admin/search.php
🧯 If You Can't Patch
- Restrict access to the /osghs/admin/ directory to authorized IP addresses only.
- Disable or remove the search functionality if not essential for operations.
🔍 How to Verify
Check if Vulnerable:
Test the search functionality at osghs/admin/search.php with SQL injection payloads like ' OR '1'='1 to see if it returns unexpected data.Check Version:
Check the software version in the admin panel or configuration files; look for version 1.0.Verify Fix Applied:
After implementing fixes, retest with SQL injection payloads to ensure no unauthorized data is returned.📡 Detection & Monitoring
Log Indicators:
- Unusual SQL queries in application logs, multiple failed login attempts followed by search queries with SQL syntax.
Network Indicators:
- HTTP POST requests to /osghs/admin/search.php containing SQL keywords like UNION, SELECT, OR, --
SIEM Query:
source="web_logs" AND uri="/osghs/admin/search.php" AND (query CONTAINS "UNION" OR query CONTAINS "SELECT" OR query CONTAINS "--")🔗 References
- https://github.com/Trinity-SYT-SECURITY/XSS_vuln_issue/blob/main/Online%20Security%20Guards%20Hiring%20System%201.0.md
- https://nvd.nist.gov/vuln/detail/CVE-2023-39551
- https://www.chtsecurity.com/news/0dbe8e1d-0a6c-4604-9cf1-778ddc86a8c1
- https://www.chtsecurity.com/news/285b9375-ba65-4f61-a02a-a575337dc86c
- https://github.com/Trinity-SYT-SECURITY/XSS_vuln_issue/blob/main/Online%20Security%20Guards%20Hiring%20System%201.0.md
- https://nvd.nist.gov/vuln/detail/CVE-2023-39551
- https://www.chtsecurity.com/news/0dbe8e1d-0a6c-4604-9cf1-778ddc86a8c1
- https://www.chtsecurity.com/news/285b9375-ba65-4f61-a02a-a575337dc86c
