CVE-2024-35273
📋 TL;DR
This vulnerability allows attackers to execute arbitrary code with elevated privileges on Fortinet FortiManager and FortiAnalyzer systems through specially crafted HTTP requests. It affects organizations using these products for network management and log analysis. Successful exploitation could lead to complete system compromise.
💻 Affected Systems
- Fortinet FortiManager
- Fortinet FortiAnalyzer
📦 What is this software?
Fortianalyzer by Fortinet
Fortimanager by Fortinet
⚠️ Risk & Real-World Impact
Worst Case
Full system takeover with administrative privileges, allowing attacker to modify configurations, access sensitive data, and pivot to other network segments.
Likely Case
Privilege escalation leading to unauthorized administrative access, configuration changes, and potential data exfiltration.
If Mitigated
Limited impact due to network segmentation, strict access controls, and monitoring preventing successful exploitation.
🎯 Exploit Status
Requires crafting specific HTTP requests to trigger the out-of-bounds write condition.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: FortiManager 7.4.3 or above, FortiAnalyzer 7.4.3 or above
Vendor Advisory: https://fortiguard.fortinet.com/psirt/FG-IR-24-106
Restart Required: No
Instructions:
1. Log into Fortinet support portal. 2. Download FortiManager/FortiAnalyzer version 7.4.3 or later. 3. Upload firmware to device. 4. Install update via System > Maintenance > Firmware. 5. Verify successful upgrade.
🔧 Temporary Workarounds
Restrict HTTP Access
allLimit HTTP/HTTPS access to management interfaces to trusted IP addresses only.
config system interface
edit <interface_name>
set allowaccess https ssh ping
end
🧯 If You Can't Patch
- Isolate affected systems in separate network segments with strict firewall rules.
- Implement additional authentication layers and monitor for suspicious HTTP requests to management interfaces.
🔍 How to Verify
Check if Vulnerable:
Check current firmware version via GUI (System > Dashboard) or CLI (get system status).Check Version:
get system status | grep VersionVerify Fix Applied:
Confirm firmware version is 7.4.3 or higher and monitor for abnormal HTTP request patterns.📡 Detection & Monitoring
Log Indicators:
- Unusual HTTP requests to management interfaces
- Privilege escalation events in system logs
- Out-of-bounds memory access warnings
Network Indicators:
- HTTP requests with abnormal patterns to FortiManager/FortiAnalyzer ports
- Traffic spikes to management interfaces
SIEM Query:
source="fortimanager" OR source="fortianalyzer" AND (http_request CONTAINS "malicious_pattern" OR event_type="privilege_escalation")