CVE-2024-26011
📋 TL;DR
This vulnerability allows unauthenticated attackers to execute arbitrary code or commands on affected Fortinet devices by sending specially crafted packets. It affects multiple Fortinet products including FortiManager, FortiPAM, FortiProxy, FortiSwitchManager, FortiPortal, and FortiOS. The issue stems from missing authentication for critical functions (CWE-306).
💻 Affected Systems
- FortiManager
- FortiPAM
- FortiProxy
- FortiSwitchManager
- FortiPortal
- FortiOS
📦 What is this software?
Fortimanager by Fortinet
Fortimanager by Fortinet
Fortimanager by Fortinet
Fortimanager by Fortinet
Fortios by Fortinet
Fortios by Fortinet
Fortios by Fortinet
Fortipam by Fortinet
Fortiportal by Fortinet
Fortiproxy by Fortinet
Fortiproxy by Fortinet
Fortiproxy by Fortinet
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise allowing attackers to gain administrative control, steal sensitive data, pivot to other network segments, or deploy ransomware.
Likely Case
Unauthorized command execution leading to configuration changes, data exfiltration, or installation of backdoors for persistent access.
If Mitigated
Limited impact due to network segmentation, strict firewall rules, and proper authentication controls preventing exploitation.
🎯 Exploit Status
Exploitation requires sending specially crafted packets to vulnerable interfaces. No authentication required.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: FortiManager: 7.4.3, 7.2.5, 7.0.12, 6.4.15; FortiPAM: 1.2.1, 1.1.3, 1.0.4; FortiProxy: 7.4.3, 7.2.10, 7.0.18, 2.0.15, 1.2.14, 1.1.7, 1.0.8; FortiSwitchManager: 7.2.4, 7.0.4; FortiPortal: 6.0.15; FortiOS: 7.4.4, 7.2.8, 7.0.15, 6.4.16, 6.2.17, 6.0.19
Vendor Advisory: https://fortiguard.fortinet.com/psirt/FG-IR-24-032
Restart Required: Yes
Instructions:
1. Download appropriate firmware version from Fortinet support portal. 2. Backup current configuration. 3. Apply firmware update via web interface or CLI. 4. Reboot device. 5. Verify update and restore functionality.
🔧 Temporary Workarounds
Network Access Control
allRestrict network access to management interfaces using firewall rules and ACLs.
config firewall policy
edit 0
set srcintf "wan1"
set dstintf "internal"
set srcaddr "all"
set dstaddr "fortinet-device-ip"
set action deny
set service "ALL"
next
end
Management Interface Isolation
allPlace management interfaces on isolated VLANs with strict access controls.
config system interface
edit "mgmt1"
set vdom "root"
set mode static
set ip 10.0.0.1 255.255.255.0
set allowaccess ping https ssh
next
end
🧯 If You Can't Patch
- Implement strict network segmentation to isolate affected devices from untrusted networks.
- Deploy intrusion prevention systems (IPS) with signatures for Fortinet vulnerabilities to detect and block exploitation attempts.
🔍 How to Verify
Check if Vulnerable:
Check device version via CLI: 'get system status' or web interface: System > Dashboard. Compare with affected versions list.Check Version:
get system status | grep VersionVerify Fix Applied:
After patching, verify version is updated to patched version using same commands. Test management interfaces for proper authentication requirements.📡 Detection & Monitoring
Log Indicators:
- Unauthorized access attempts to management interfaces
- Unexpected configuration changes
- Unusual command execution in logs
Network Indicators:
- Suspicious packets to management ports (TCP/443, TCP/22, etc.)
- Anomalous traffic patterns to Fortinet devices
SIEM Query:
source="fortinet" AND (event_type="admin_login_failed" OR event_type="config_change") AND src_ip NOT IN [trusted_ips]