CVE-2023-51317
📋 TL;DR
PHPJabbers Restaurant Booking System v3.0 contains multiple HTML injection vulnerabilities in various parameters, allowing attackers to inject malicious HTML content. This affects all users running the vulnerable version of the software, potentially leading to cross-site scripting attacks.
💻 Affected Systems
- PHPJabbers Restaurant Booking System
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers could inject malicious scripts that steal session cookies, redirect users to phishing sites, or perform actions on behalf of authenticated users, potentially leading to full account compromise.
Likely Case
Attackers inject HTML content to deface the website, display malicious content, or perform limited cross-site scripting attacks against users.
If Mitigated
With proper input validation and output encoding, injected HTML would be rendered as plain text rather than executable code.
🎯 Exploit Status
Proof of concept available on Packet Storm Security. Exploitation requires minimal technical skill.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Not available
Restart Required: No
Instructions:
No official patch available. Contact vendor for updates or implement workarounds.
🔧 Temporary Workarounds
Input Validation and Sanitization
allImplement server-side validation and sanitization of all user inputs, particularly the vulnerable parameters.
Manual code review and modification of input handling in affected PHP files
Web Application Firewall (WAF)
allDeploy a WAF with rules to detect and block HTML injection attempts.
Configure WAF rules to filter malicious HTML/script content in POST/GET parameters
🧯 If You Can't Patch
- Implement strict Content Security Policy (CSP) headers to limit script execution
- Disable or restrict access to vulnerable functionality if not required
🔍 How to Verify
Check if Vulnerable:
Test vulnerable parameters by injecting HTML payloads like <h1>test</h1> and check if rendered as HTMLCheck Version:
Check system version in admin panel or review PHPJabbers documentation filesVerify Fix Applied:
Verify that injected HTML is properly encoded and displayed as plain text rather than rendered📡 Detection & Monitoring
Log Indicators:
- Unusual HTML/script content in POST/GET parameters
- Multiple failed injection attempts
Network Indicators:
- HTTP requests containing HTML tags in parameter values
- Unusual content-type responses
SIEM Query:
web_requests WHERE (parameter_value CONTAINS '<script>' OR parameter_value CONTAINS '<iframe>' OR parameter_value CONTAINS 'javascript:')