CVE-2024-50567
📋 TL;DR
This CVE describes an OS command injection vulnerability in Fortinet FortiWeb web application firewalls. Attackers can execute arbitrary commands on affected devices by sending specially crafted input. Organizations running FortiWeb versions 7.4.0 through 7.6.0 are vulnerable.
💻 Affected Systems
- Fortinet FortiWeb
📦 What is this software?
Fortiweb by Fortinet
Fortiweb by Fortinet
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of the FortiWeb device leading to lateral movement into protected networks, data exfiltration, or deployment of persistent backdoors.
Likely Case
Unauthorized command execution allowing attackers to modify configurations, disable security controls, or use the device as a pivot point.
If Mitigated
Limited impact due to network segmentation, restricted administrative access, and proper input validation controls.
🎯 Exploit Status
Exploitation requires network access to the FortiWeb management interface or vulnerable service.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: FortiWeb 7.6.1 or later
Vendor Advisory: https://fortiguard.fortinet.com/psirt/FG-IR-24-438
Restart Required: No
Instructions:
1. Log into FortiWeb management interface. 2. Navigate to System > Dashboard. 3. Check for available firmware updates. 4. Download and install FortiWeb 7.6.1 or later. 5. Verify successful update in System > Dashboard.
🔧 Temporary Workarounds
Restrict Management Access
allLimit network access to FortiWeb management interfaces to trusted IP addresses only.
config system interface
edit port1
set allowaccess https ssh
set trust-ip-list 192.168.1.0/24
end
🧯 If You Can't Patch
- Implement strict network segmentation to isolate FortiWeb devices from critical systems.
- Deploy additional WAF or IPS solutions in front of FortiWeb to detect and block exploitation attempts.
🔍 How to Verify
Check if Vulnerable:
Check FortiWeb firmware version via GUI: System > Dashboard > System Information, or CLI: get system statusCheck Version:
get system status | grep VersionVerify Fix Applied:
Confirm firmware version is 7.6.1 or later via System > Dashboard > System Information📡 Detection & Monitoring
Log Indicators:
- Unusual command execution in system logs
- Multiple failed authentication attempts followed by successful login
- Configuration changes from unexpected sources
Network Indicators:
- Unusual outbound connections from FortiWeb device
- Traffic patterns inconsistent with normal WAF operations
SIEM Query:
source="fortiweb" AND (event_type="system" OR event_type="admin") AND (message="*command*" OR message="*exec*" OR message="*injection*")