CVE-2017-17777

9.8 CRITICAL

📋 TL;DR

CVE-2017-17777 is an authentication bypass vulnerability in Paid To Read Script 2.0.5 that allows unauthenticated attackers to access admin panel functions. Attackers can directly request admin pages with specific parameters to bypass authentication checks. This affects all installations of Paid To Read Script 2.0.5 that expose the admin panel.

💻 Affected Systems

Products:
  • Paid To Read Script
Versions: 2.0.5
Operating Systems: All platforms running PHP
Default Config Vulnerable: ⚠️ Yes
Notes: Only affects installations with admin panel accessible. The vulnerability exists in specific PHP files (admin/viewvisitcamp.php and admin/userview.php).

📦 What is this software?

⚠️ Risk & Real-World Impact

🔴

Worst Case

Complete compromise of the admin panel allowing attackers to view sensitive user data, modify system settings, and potentially execute arbitrary code through other vulnerabilities.

🟠

Likely Case

Unauthorized access to user data and administrative functions, potentially leading to data theft, privilege escalation, or system manipulation.

🟢

If Mitigated

Limited impact if proper network segmentation and access controls prevent external access to admin interfaces.

🌐 Internet-Facing: HIGH - The admin panel is typically internet-facing in web applications, making direct requests trivial for attackers.
🏢 Internal Only: MEDIUM - Internal attackers could still exploit this if they have network access to the admin interface.

🎯 Exploit Status

Public PoC: ⚠️ Yes
Weaponized: LIKELY
Unauthenticated Exploit: ⚠️ Yes
Complexity: LOW

Exploitation requires only HTTP requests to specific URLs with parameters. No authentication or special tools needed.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: Unknown

Vendor Advisory: None known

Restart Required: No

Instructions:

No official patch available. Consider upgrading to a newer version if available, or implement workarounds.

🔧 Temporary Workarounds

Implement proper authentication checks

all

Add authentication verification to admin/viewvisitcamp.php and admin/userview.php files before processing requests.

Edit PHP files to include session validation: if(!isset($_SESSION['admin_logged_in']) || $_SESSION['admin_logged_in'] !== true) { header('Location: login.php'); exit(); }

Restrict admin panel access

all

Use web server configuration to restrict access to admin directory to specific IP addresses.

For Apache: .htaccess with 'Require ip 192.168.1.0/24'
For Nginx: location /admin { allow 192.168.1.0/24; deny all; }

🧯 If You Can't Patch

  • Move admin panel to internal network only with firewall rules blocking external access
  • Implement web application firewall (WAF) rules to block direct requests to vulnerable endpoints

🔍 How to Verify

Check if Vulnerable:

Attempt to access http://[target]/admin/viewvisitcamp.php?fn=test or http://[target]/admin/userview.php?uid=1 without authentication. If data is returned, system is vulnerable.

Check Version:

Check script version in admin panel or readme files. Look for 'Paid To Read Script 2.0.5' in source code.

Verify Fix Applied:

After implementing fixes, repeat the vulnerable check. Should receive authentication prompt or redirect to login page.

📡 Detection & Monitoring

Log Indicators:

  • HTTP requests to /admin/viewvisitcamp.php or /admin/userview.php without preceding authentication requests
  • Multiple failed login attempts followed by direct admin access

Network Indicators:

  • Unusual traffic patterns to admin endpoints from unauthorized IPs
  • Direct parameterized requests to admin URLs

SIEM Query:

source="web_logs" AND (url="/admin/viewvisitcamp.php" OR url="/admin/userview.php") AND NOT (referer="*/login.php" OR user_agent="*bot*")

🔗 References

📤 Share & Export