CVE-2025-53679
📋 TL;DR
This OS command injection vulnerability in Fortinet FortiSandbox allows remote privileged attackers to execute arbitrary commands via crafted HTTP/HTTPS requests. Affected systems include FortiSandbox versions 5.0.0-5.0.2, 4.4.0-4.4.7, all 4.2 and 4.0 versions, and FortiSandbox Cloud 24.1 and all 23.x versions.
💻 Affected Systems
- Fortinet FortiSandbox
- Fortinet FortiSandbox Cloud
📦 What is this software?
Fortisandbox by Fortinet
Fortisandbox by Fortinet
⚠️ Risk & Real-World Impact
Worst Case
Full system compromise leading to data exfiltration, lateral movement, and persistent backdoor installation
Likely Case
Unauthorized command execution with privileged context, potentially leading to data access and system manipulation
If Mitigated
Limited impact due to network segmentation and proper access controls restricting attacker reach
🎯 Exploit Status
Exploitation requires privileged access but command injection vulnerabilities are typically straightforward to exploit once access is obtained
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Refer to Fortinet advisory for specific fixed versions
Vendor Advisory: https://fortiguard.fortinet.com/psirt/FG-IR-25-454
Restart Required: Yes
Instructions:
1. Review Fortinet advisory FG-IR-25-454. 2. Identify affected version. 3. Upgrade to fixed version per vendor guidance. 4. Restart affected services/systems.
🔧 Temporary Workarounds
Network Access Restriction
allRestrict network access to FortiSandbox management interfaces to trusted IPs only
Privilege Reduction
allReview and minimize privileged accounts with access to FortiSandbox management interfaces
🧯 If You Can't Patch
- Implement strict network segmentation to isolate FortiSandbox from critical systems
- Enhance monitoring and alerting for unusual command execution patterns
🔍 How to Verify
Check if Vulnerable:
Check FortiSandbox version via web interface or CLI; compare against affected versions listed in advisoryCheck Version:
get system status (via FortiSandbox CLI) or check web interface system informationVerify Fix Applied:
Verify version has been updated to fixed release and test management interface functionality📡 Detection & Monitoring
Log Indicators:
- Unusual command execution patterns in system logs
- HTTP/HTTPS requests with suspicious command-like parameters
Network Indicators:
- Unexpected outbound connections from FortiSandbox
- Unusual traffic patterns to/from management interfaces
SIEM Query:
source="fortisandbox" AND (http_request CONTAINS "cmd" OR http_request CONTAINS "exec" OR http_request CONTAINS "system")