CVE-2022-45599
📋 TL;DR
CVE-2022-45599 is a PHP type juggling vulnerability in Aztech WMB250AC mesh routers that allows attackers to bypass authentication and gain administrative privileges under specific conditions related to password hashes. This affects users of Aztech WMB250AC routers with firmware version 016 2020. The vulnerability resides in the login.php file and enables privilege escalation.
💻 Affected Systems
- Aztech WMB250AC Mesh Router
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers gain full administrative control of the router, allowing them to intercept traffic, modify configurations, install malware, and pivot to internal networks.
Likely Case
Unauthorized administrative access leading to network compromise, data interception, and potential lateral movement to connected devices.
If Mitigated
Limited impact if strong network segmentation, monitoring, and access controls prevent exploitation or detect anomalous login attempts.
🎯 Exploit Status
Exploitation requires knowledge of specific password hash conditions but is technically straightforward once those conditions are met.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not available
Vendor Advisory: Not available
Restart Required: No
Instructions:
No official patch available. Consider replacing affected hardware or implementing workarounds.
🔧 Temporary Workarounds
Disable Web Management Interface
allDisable the vulnerable web interface to prevent exploitation attempts.
Check router documentation for disabling web admin interface
Network Segmentation
allIsolate the router from critical networks to limit potential damage.
Configure firewall rules to restrict access to router management interface
🧯 If You Can't Patch
- Replace affected routers with updated or different models
- Implement strict network access controls and monitor for unauthorized login attempts
🔍 How to Verify
Check if Vulnerable:
Check router firmware version via web interface or SSH if available. Vulnerable if running Firmware Version 016 2020.Check Version:
Check web interface admin panel or use manufacturer-specific CLI commands if available.Verify Fix Applied:
Verify firmware has been updated to a version beyond 016 2020, though no official patch exists.📡 Detection & Monitoring
Log Indicators:
- Multiple failed login attempts followed by successful admin login from unusual IPs
- Unauthorized configuration changes in router logs
Network Indicators:
- Unusual traffic patterns from router to external IPs
- Unexpected administrative access attempts to router management interface
SIEM Query:
Example: 'source="router_logs" AND (event="admin_login" OR event="config_change") AND user!="authorized_user"'