CVE-2024-57602

9.8 CRITICAL

📋 TL;DR

A privilege escalation vulnerability in EasyAppointments v1.5.0 allows remote attackers to gain elevated privileges through the index.php file. This affects all installations running the vulnerable version, potentially enabling attackers to compromise the entire appointment scheduling system.

💻 Affected Systems

Products:
  • EasyAppointments
Versions: 1.5.0
Operating Systems: All
Default Config Vulnerable: ⚠️ Yes
Notes: All installations of version 1.5.0 are vulnerable regardless of configuration.

📦 What is this software?

⚠️ Risk & Real-World Impact

🔴

Worst Case

Complete system takeover with administrative privileges, allowing data theft, system modification, or deployment of additional malware.

🟠

Likely Case

Unauthorized access to sensitive appointment data, customer information, and system configuration with ability to modify or delete records.

🟢

If Mitigated

Limited impact if proper network segmentation and access controls prevent external exploitation attempts.

🌐 Internet-Facing: HIGH
🏢 Internal Only: MEDIUM

🎯 Exploit Status

Public PoC: ✅ No
Weaponized: UNKNOWN
Unauthenticated Exploit: ✅ No
Complexity: MEDIUM

Exploitation requires some understanding of the application but appears to be straightforward based on the vulnerability description.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: Unknown

Vendor Advisory: Unknown

Restart Required: No

Instructions:

1. Check for official patch from EasyAppointments developers
2. If patch available, download and apply according to vendor instructions
3. Test functionality after patching

🔧 Temporary Workarounds

Restrict index.php access

all

Implement access controls to limit who can access the vulnerable index.php file

# Configure web server (Apache example)
# In .htaccess or virtual host config:
<Files "index.php">
    Require ip 192.168.1.0/24
</Files>

Web Application Firewall rules

all

Implement WAF rules to detect and block privilege escalation attempts

# Example ModSecurity rule
SecRule REQUEST_FILENAME "@endsWith index.php" \
    "id:1001,phase:2,deny,status:403,msg:'Privilege escalation attempt detected'"

🧯 If You Can't Patch

  • Implement strict network segmentation to isolate the EasyAppointments server from critical systems
  • Enable detailed logging and monitoring for privilege escalation attempts and review logs daily

🔍 How to Verify

Check if Vulnerable:

Check the version number in the EasyAppointments admin panel or by examining the application files. Version 1.5.0 is vulnerable.

Check Version:

# Check version via command line if file access available
grep -r "version.*1.5.0" /path/to/easyappointments/ || echo "Check admin panel for version info"

Verify Fix Applied:

After applying any mitigation, test that normal users cannot access administrative functions or escalate privileges.

📡 Detection & Monitoring

Log Indicators:

  • Unusual privilege changes in application logs
  • Multiple failed login attempts followed by successful admin access from same IP
  • Access to admin functions from non-admin accounts

Network Indicators:

  • Unusual traffic patterns to index.php with privilege-related parameters
  • Requests attempting to modify user roles or permissions

SIEM Query:

source="web_logs" (url="*index.php*" AND (param="*privilege*" OR param="*admin*" OR param="*role*")) | stats count by src_ip

🔗 References

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