CVE-2024-8073
📋 TL;DR
This CVE describes a command injection vulnerability in Hillstone Networks Web Application Firewall that allows attackers to execute arbitrary commands on the affected system. The vulnerability affects Hillstone Networks Web Application Firewall versions 5.5R6-2.6.7 through 5.5R6-2.8.13. Attackers can exploit this to gain unauthorized access and control over the firewall device.
💻 Affected Systems
- Hillstone Networks Web Application Firewall
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise allowing attackers to execute arbitrary commands with high privileges, potentially leading to data exfiltration, lateral movement, or deployment of ransomware.
Likely Case
Attackers gain shell access to the firewall device, allowing them to modify configurations, disable security controls, or use the device as a pivot point into the network.
If Mitigated
If proper network segmentation and access controls are in place, impact may be limited to the firewall device itself without allowing lateral movement.
🎯 Exploit Status
Command injection vulnerabilities typically have low exploitation complexity, especially when unauthenticated.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 5.5R6-2.8.14 or later
Vendor Advisory: https://www.hillstonenet.com.cn/security-notification/2024/08/21/mlzrld-2/
Restart Required: Yes
Instructions:
1. Download the latest firmware from Hillstone support portal. 2. Backup current configuration. 3. Apply firmware update via web interface or CLI. 4. Reboot the device. 5. Verify the update was successful.
🔧 Temporary Workarounds
Restrict Management Access
allLimit access to the WAF management interface to trusted IP addresses only.
Configure firewall rules to restrict access to management IP/port
Disable Unnecessary Features
allDisable any unnecessary web management features or APIs that might be vulnerable.
Review and disable non-essential management interfaces
🧯 If You Can't Patch
- Isolate the WAF device in a dedicated network segment with strict access controls
- Implement network monitoring and intrusion detection specifically for the WAF management interface
🔍 How to Verify
Check if Vulnerable:
Check the firmware version via web interface (System > System Information) or CLI command 'show version'Check Version:
show versionVerify Fix Applied:
Verify firmware version is 5.5R6-2.8.14 or later using the same methods📡 Detection & Monitoring
Log Indicators:
- Unusual command execution in system logs
- Multiple failed login attempts followed by successful access
- Unexpected configuration changes
Network Indicators:
- Unusual outbound connections from WAF device
- Traffic patterns inconsistent with normal WAF operations
SIEM Query:
source="hillstone_waf" AND (event_type="command_execution" OR event_type="system_alert")