CVE-2022-28371
📋 TL;DR
This vulnerability allows attackers to bypass authentication on Verizon 5G Home LVSKIHP devices by extracting static certificates embedded in the firmware. Anyone using affected Verizon 5G Home IDU and ODU devices with vulnerable firmware versions is at risk.
💻 Affected Systems
- Verizon 5G Home LVSKIHP InDoorUnit (IDU)
- Verizon 5G Home LVSKIHP OutDoorUnit (ODU)
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete device compromise allowing unauthorized access to network traffic, device configuration, and potential lateral movement to connected networks.
Likely Case
Unauthorized access to device management interfaces, configuration tampering, and potential service disruption.
If Mitigated
Limited impact with proper network segmentation and monitoring, though authentication bypass remains possible.
🎯 Exploit Status
Exploitation requires firmware download and certificate extraction, which is documented in public research.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: https://www.verizon.com/info/reportsecurityvulnerability/
Restart Required: Yes
Instructions:
1. Contact Verizon support for firmware updates. 2. Check for available updates through device management interface. 3. Apply any available firmware updates. 4. Reboot device after update.
🔧 Temporary Workarounds
Network Segmentation
allIsolate affected devices from critical internal networks using VLANs or firewalls.
Access Control Lists
allRestrict management interface access to trusted IP addresses only.
🧯 If You Can't Patch
- Replace affected devices with updated hardware if available.
- Disable remote management features if not required.
🔍 How to Verify
Check if Vulnerable:
Check device firmware version through web interface or SSH if accessible. Vulnerable versions are IDU 3.4.66.162 and ODU 3.33.101.0.Check Version:
Check via device web interface at http://[device-ip]/ or through device management console.Verify Fix Applied:
Verify firmware version has been updated to a version later than the vulnerable releases.📡 Detection & Monitoring
Log Indicators:
- Unauthorized access attempts to CRTC/ODU RPC endpoints
- Firmware download attempts from unusual sources
- Certificate validation failures
Network Indicators:
- Unusual traffic to device management ports (typically 443, 80)
- Connections using extracted certificate credentials
SIEM Query:
source_ip=* AND (dest_port=443 OR dest_port=80) AND dest_ip=[device_ip] AND (user_agent CONTAINS 'curl' OR user_agent CONTAINS 'wget')