CVE-2024-50569
📋 TL;DR
This OS command injection vulnerability in Fortinet FortiWeb allows attackers to execute arbitrary commands on affected devices by sending specially crafted input. It affects FortiWeb versions 7.0.0 through 7.6.0, potentially compromising web application firewall security.
💻 Affected Systems
- Fortinet FortiWeb
📦 What is this software?
Fortiweb by Fortinet
Fortiweb by Fortinet
⚠️ Risk & Real-World Impact
Worst Case
Full system compromise allowing attacker to execute arbitrary commands with web server privileges, potentially leading to data exfiltration, lateral movement, or ransomware deployment.
Likely Case
Unauthorized command execution allowing attackers to modify configurations, disable security controls, or establish persistence on the FortiWeb device.
If Mitigated
Limited impact with proper network segmentation and input validation controls in place, potentially only affecting the FortiWeb device itself.
🎯 Exploit Status
Exploitation requires access to the FortiWeb management interface. No public exploit code is currently available.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 7.6.1 and later
Vendor Advisory: https://fortiguard.fortinet.com/psirt/FG-IR-24-438
Restart Required: Yes
Instructions:
1. Backup current configuration. 2. Download FortiWeb firmware version 7.6.1 or later from Fortinet support portal. 3. Upload firmware via web GUI or CLI. 4. Reboot device after installation.
🔧 Temporary Workarounds
Restrict Management Access
allLimit access to FortiWeb management interface to trusted IP addresses only
config system interface
edit port1
set allowaccess https ssh
set trust-ip 192.168.1.0 255.255.255.0
end
Enable Input Validation
allConfigure FortiWeb to validate and sanitize all user inputs
config web-protection signature
edit custom_signature
set pattern "[;|&`$()]"
set action block
end
🧯 If You Can't Patch
- Implement strict network segmentation to isolate FortiWeb from critical systems
- Deploy additional WAF layer in front of FortiWeb to filter malicious inputs
🔍 How to Verify
Check if Vulnerable:
Check FortiWeb version via web GUI (System > Dashboard) or CLI command: get system statusCheck Version:
get system status | grep VersionVerify Fix Applied:
Verify firmware version is 7.6.1 or later using: get system status | grep Version📡 Detection & Monitoring
Log Indicators:
- Unusual command execution in system logs
- Multiple failed login attempts followed by successful login
- Configuration changes from unexpected sources
Network Indicators:
- Unusual outbound connections from FortiWeb management interface
- Traffic patterns inconsistent with normal WAF operations
SIEM Query:
source="fortiweb" AND (event_type="command_execution" OR event_type="config_change")