CVE-2020-8708
📋 TL;DR
This vulnerability allows an unauthenticated attacker with adjacent network access to bypass authentication on affected Intel server hardware, potentially gaining administrative privileges. It affects Intel Server Boards, Server Systems, and Compute Modules with firmware versions before 1.59. Attackers must be on the same local network segment as the vulnerable hardware.
💻 Affected Systems
- Intel Server Boards
- Intel Server Systems
- Intel Compute Modules
📦 What is this software?
Compute Module Hns2600bp Firmware by Intel
Compute Module Hns2600kp Firmware by Intel
Compute Module Hns2600tp Firmware by Intel
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of server hardware management interface leading to persistent backdoor installation, data theft, or denial of service.
Likely Case
Unauthorized access to server management interface allowing configuration changes, firmware manipulation, or privilege escalation.
If Mitigated
Limited impact due to network segmentation and access controls preventing adjacent network access.
🎯 Exploit Status
Exploitation requires adjacent network access but no authentication, making it relatively simple for attackers on the same network segment.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Version 1.59 or later
Vendor Advisory: https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00384.html
Restart Required: Yes
Instructions:
1. Download firmware update 1.59+ from Intel support site. 2. Apply firmware update through management interface. 3. Reboot the server hardware to complete installation.
🔧 Temporary Workarounds
Network Segmentation
allIsolate server management interfaces on dedicated VLANs with strict access controls.
Access Control Lists
allImplement network ACLs to restrict access to server management interfaces to authorized IPs only.
🧯 If You Can't Patch
- Segment server management interfaces on isolated networks with no user access
- Implement strict firewall rules allowing only trusted administrative IPs to access management interfaces
🔍 How to Verify
Check if Vulnerable:
Check firmware version in Intel server management interface (BMC/iDRAC equivalent). Versions before 1.59 are vulnerable.Check Version:
Varies by specific Intel hardware - typically accessible via web interface at server IP or using ipmitool commands.Verify Fix Applied:
Confirm firmware version is 1.59 or later in management interface and test authentication requirements.📡 Detection & Monitoring
Log Indicators:
- Unauthenticated access attempts to management interface
- Unexpected firmware changes
- Authentication bypass logs
Network Indicators:
- Unusual traffic to server management ports (typically 443, 623, 664)
- Authentication attempts from unexpected IPs
SIEM Query:
source_ip=* AND (dest_port=443 OR dest_port=623 OR dest_port=664) AND (action="authentication_failure" OR action="authentication_bypass")