CVE-2023-48830
📋 TL;DR
Shuttle Booking Software 2.0 contains a CSV injection vulnerability in the Languages export functionality. This allows attackers to inject malicious formulas into exported CSV files, which can execute arbitrary code when opened in spreadsheet applications. Organizations using this software for shuttle booking management are affected.
💻 Affected Systems
- Shuttle Booking Software
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution on client systems when users open malicious CSV exports, potentially leading to full system compromise, data theft, or ransomware deployment.
Likely Case
Formula injection leading to command execution on client machines, data exfiltration, or spreadsheet manipulation when users open exported files.
If Mitigated
Limited impact with proper user training about opening untrusted CSV files and application-level input validation.
🎯 Exploit Status
Exploit details published on Packet Storm Security. Requires user interaction to open malicious CSV file.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: https://www.phpjabbers.com/shuttle-booking-software/
Restart Required: No
Instructions:
Check vendor website for updates. If patch available: 1. Backup current installation 2. Download latest version 3. Replace vulnerable files 4. Test functionality
🔧 Temporary Workarounds
Input Sanitization
allAdd server-side validation to sanitize CSV export inputs and escape formula characters
Implement PHP input filtering for CSV exports: htmlspecialchars() or custom sanitization
Disable CSV Export
allTemporarily disable the Languages CSV export functionality
Comment out or remove CSV export code in affected PHP files
🧯 If You Can't Patch
- Implement web application firewall rules to block CSV injection payloads
- Educate users to never open CSV files directly in spreadsheet applications - use plain text editors instead
🔍 How to Verify
Check if Vulnerable:
Test by exporting Languages data with formula payloads like =cmd|' /C calc'!A0 and checking if formulas persist in CSV outputCheck Version:
Check software version in admin panel or readme filesVerify Fix Applied:
Verify exported CSV files properly escape formula characters and show as plain text in spreadsheet applications📡 Detection & Monitoring
Log Indicators:
- Multiple CSV export requests with unusual payloads
- Large export files with formula patterns
Network Indicators:
- HTTP POST requests to export endpoints with formula characters
- CSV downloads containing =, +, - or @ at start of cells
SIEM Query:
web_requests url="*export*" AND (body="=cmd" OR body="=HYPERLINK" OR body="@")