CVE-2023-43457
📋 TL;DR
This vulnerability in Service Provider Management System v1.0 allows remote attackers to escalate privileges by manipulating the ID parameter in the admin user management endpoint. Attackers can gain administrative access without authentication. Anyone running this specific PHP application is affected.
💻 Affected Systems
- Service Provider Management System
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise with administrative access, allowing data theft, account creation/deletion, and potential further exploitation of the underlying server.
Likely Case
Unauthorized administrative access leading to data manipulation, user account compromise, and potential installation of backdoors.
If Mitigated
Limited impact with proper network segmentation, strong authentication, and input validation in place.
🎯 Exploit Status
Simple parameter manipulation vulnerability with public proof-of-concept available.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: N/A
Vendor Advisory: N/A
Restart Required: No
Instructions:
No official patch available. Remove or replace the vulnerable application.
🔧 Temporary Workarounds
Input Validation
allAdd proper input validation and authorization checks for the ID parameter
Modify /php-spms/admin/?page=user/ endpoint to validate user permissions and sanitize ID parameter
Access Restriction
linuxRestrict access to admin endpoints
Add .htaccess rules to restrict /php-spms/admin/ directory to trusted IPs only
🧯 If You Can't Patch
- Remove the application from internet-facing servers immediately
- Implement strict network segmentation and firewall rules to limit access to the application
🔍 How to Verify
Check if Vulnerable:
Check if you have Service Provider Management System v1.0 installed and accessible at /php-spms/Check Version:
Check application files for version information or review installation documentationVerify Fix Applied:
Test the /php-spms/admin/?page=user/ endpoint with manipulated ID parameters to ensure proper authorization checks📡 Detection & Monitoring
Log Indicators:
- Multiple failed authentication attempts followed by successful admin access
- Unusual parameter values in /php-spms/admin/?page=user/ requests
Network Indicators:
- HTTP requests to /php-spms/admin/?page=user/ with manipulated ID parameters
- Unusual admin activity from non-admin IP addresses
SIEM Query:
source="web_logs" AND uri="/php-spms/admin/?page=user/" AND (param.ID != expected_pattern OR user_agent contains exploit_tools)🔗 References
- https://samh4cks.github.io/posts/cve-2023-43457/
- https://www.sourcecodester.com/php/16501/service-provider-management-system-using-php-and-mysql-source-code-free-download.html
- https://www.sourcecodester.com/users/tips23
- https://samh4cks.github.io/posts/cve-2023-43457/
- https://www.sourcecodester.com/php/16501/service-provider-management-system-using-php-and-mysql-source-code-free-download.html
- https://www.sourcecodester.com/users/tips23
