CVE-2021-45652
📋 TL;DR
This vulnerability in NETGEAR Orbi WiFi systems allows unauthorized disclosure of sensitive information from affected devices. It impacts NETGEAR RBK352, RBR350, and RBS350 devices running firmware versions before 4.4.0.10. Attackers could potentially access confidential data without authentication.
💻 Affected Systems
- NETGEAR RBK352
- NETGEAR RBR350
- NETGEAR RBS350
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers gain access to sensitive configuration data, credentials, or network information that could lead to complete network compromise, lateral movement, or credential theft.
Likely Case
Unauthorized access to device configuration information, potentially exposing network settings, connected devices, or administrative details.
If Mitigated
Limited exposure of non-critical information if proper network segmentation and access controls are implemented.
🎯 Exploit Status
The vulnerability allows information disclosure without authentication, making exploitation straightforward if the device is accessible.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 4.4.0.10 or later
Vendor Advisory: https://kb.netgear.com/000064152/Security-Advisory-for-Sensitive-Information-Disclosure-on-Some-WiFi-Systems-PSV-2021-0013
Restart Required: Yes
Instructions:
1. Log into NETGEAR Orbi web interface. 2. Navigate to Advanced > Administration > Firmware Update. 3. Check for updates and install firmware version 4.4.0.10 or later. 4. The device will reboot automatically after update.
🔧 Temporary Workarounds
Network Segmentation
allIsolate affected devices from untrusted networks and limit access to management interfaces.
Access Control Lists
allImplement firewall rules to restrict access to device management interfaces.
🧯 If You Can't Patch
- Remove affected devices from internet-facing positions and place behind firewalls
- Implement strict network segmentation to limit potential lateral movement
🔍 How to Verify
Check if Vulnerable:
Check firmware version in Orbi web interface under Advanced > Administration > Firmware UpdateCheck Version:
Not applicable - use web interfaceVerify Fix Applied:
Confirm firmware version is 4.4.0.10 or later in the same interface📡 Detection & Monitoring
Log Indicators:
- Unusual access patterns to device management interfaces
- Multiple failed authentication attempts followed by information requests
Network Indicators:
- Unexpected HTTP/HTTPS requests to device management ports from unauthorized sources
SIEM Query:
source_ip NOT IN (trusted_networks) AND dest_port IN (80,443,8080) AND dest_ip IN (device_ips) AND http_method IN (GET,POST)