CVE-2020-1864
📋 TL;DR
This vulnerability allows remote attackers to bypass authentication on affected Huawei Secospace AntiDDoS8000 devices by forging packets from a peer device, enabling unauthorized command execution. It impacts specific versions of Huawei's AntiDDoS8000 product line, primarily used for network security and DDoS mitigation.
💻 Affected Systems
- Huawei Secospace AntiDDoS8000
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Full compromise of the AntiDDoS device, allowing attackers to disrupt DDoS protection, intercept/modify network traffic, or pivot to internal networks.
Likely Case
Unauthorized access leading to configuration changes, service disruption, or data exfiltration from the device.
If Mitigated
Limited impact if devices are isolated or patched, but residual risk from misconfigurations.
🎯 Exploit Status
Exploitation involves packet forgery and information gathering, but no public proof-of-concept is documented.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check Huawei advisory for specific patched versions; likely requires upgrading to a fixed release.
Vendor Advisory: https://www.huawei.com/en/psirt/security-advisories/huawei-sa-20200318-01-authentication-en
Restart Required: Yes
Instructions:
1. Review Huawei advisory for patched versions. 2. Backup device configuration. 3. Apply the recommended firmware update via Huawei's management interface. 4. Restart the device as required. 5. Verify the update and reconfigure if needed.
🔧 Temporary Workarounds
Network Segmentation
allIsolate AntiDDoS8000 devices from untrusted networks to limit exposure to potential attackers.
Access Control Lists (ACLs)
allImplement strict ACLs to restrict traffic to the device from authorized peer devices only.
🧯 If You Can't Patch
- Monitor network traffic for unusual packet patterns or unauthorized access attempts to the device.
- Enhance logging and alerting for authentication failures or configuration changes on the AntiDDoS8000.
🔍 How to Verify
Check if Vulnerable:
Check the device firmware version via the Huawei management interface or CLI; if it matches affected versions, it is vulnerable.Check Version:
Use Huawei-specific CLI commands (e.g., 'display version') on the device; exact command may vary by model.Verify Fix Applied:
After patching, confirm the firmware version is updated to a non-affected release and test authentication mechanisms.📡 Detection & Monitoring
Log Indicators:
- Unexpected authentication successes, failed login attempts from unknown sources, or configuration changes without authorization.
Network Indicators:
- Suspicious packets mimicking peer devices, unusual command traffic to the AntiDDoS8000 management interface.
SIEM Query:
Example: 'source_ip IN (AntiDDoS_device_ips) AND event_type IN (authentication_success, configuration_change) AND user NOT IN (authorized_users)'