CVE-2024-57490
📋 TL;DR
This vulnerability allows attackers to bypass authentication in Guangzhou Hongfan Technology's iOffice20 software through a logical flaw, enabling unauthorized login to any system account including administrators. Organizations using iOffice20 are affected by this authentication bypass vulnerability.
💻 Affected Systems
- Guangzhou Hongfan Technology iOffice20
📦 What is this software?
Ioffice20 by Ioffice
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise with administrative access, data theft, privilege escalation, and potential ransomware deployment across the entire iOffice20 environment.
Likely Case
Unauthorized access to sensitive business data, user impersonation, and potential lateral movement within the iOffice20 system.
If Mitigated
Limited impact if strong network segmentation, monitoring, and additional authentication layers are in place to detect and prevent unauthorized access attempts.
🎯 Exploit Status
Requires understanding of the logical flaw but no special tools or advanced skills needed once the vulnerability is understood
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Contact vendor for patched version
Vendor Advisory: https://www.ioffice.cn
Restart Required: No
Instructions:
1. Contact Guangzhou Hongfan Technology for security patch 2. Apply patch following vendor instructions 3. Test authentication functionality
🔧 Temporary Workarounds
Network Access Control
allRestrict access to iOffice20 to trusted IP ranges only
Multi-Factor Authentication
allImplement additional authentication layer to compensate for the bypass vulnerability
🧯 If You Can't Patch
- Isolate iOffice20 system from internet and restrict internal network access
- Implement strict monitoring and alerting for unusual login patterns or administrative access
🔍 How to Verify
Check if Vulnerable:
Test authentication bypass by attempting to access administrative functions without proper credentialsCheck Version:
Check iOffice20 version through web interface or contact vendorVerify Fix Applied:
Verify that authentication bypass attempts fail and proper login is required for all accounts📡 Detection & Monitoring
Log Indicators:
- Multiple failed login attempts followed by successful login from same IP
- Administrative actions from non-admin user accounts
- Login events without corresponding authentication requests
Network Indicators:
- Unusual authentication traffic patterns
- Direct access to administrative endpoints without preceding login
SIEM Query:
source="ioffice20" AND (event_type="login" AND NOT preceding_event="auth_request")