CVE-2024-26012
📋 TL;DR
This CVE describes an OS command injection vulnerability in Fortinet FortiAP devices that allows local authenticated attackers to execute arbitrary code via the CLI. Affected users include organizations using vulnerable FortiAP-S, FortiAP-W2, and FortiAP models with specific firmware versions. The vulnerability stems from improper neutralization of special elements in OS commands.
💻 Affected Systems
- FortiAP-S
- FortiAP-W2
- FortiAP
📦 What is this software?
Fortiap by Fortinet
Fortiap by Fortinet
Fortiap S by Fortinet
Fortiap W2 by Fortinet
Fortiap W2 by Fortinet
⚠️ Risk & Real-World Impact
Worst Case
An authenticated attacker could gain full administrative control of the FortiAP device, potentially pivoting to other network segments, intercepting traffic, or deploying persistent malware.
Likely Case
A malicious insider or compromised account could execute arbitrary commands on the FortiAP, disrupting wireless services, modifying configurations, or extracting sensitive information.
If Mitigated
With strict access controls and network segmentation, impact would be limited to the affected FortiAP device only.
🎯 Exploit Status
Exploitation requires authenticated CLI access. The vulnerability is in command parsing, making exploitation straightforward for authenticated users.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: FortiAP-S: 6.4.10 or above; FortiAP-W2: 7.2.4 or above, 7.4.3 or above; FortiAP: 7.2.4 or above, 7.4.3 or above
Vendor Advisory: https://fortiguard.fortinet.com/psirt/FG-IR-23-405
Restart Required: Yes
Instructions:
1. Download the patched firmware from Fortinet support portal. 2. Backup current configuration. 3. Upload and install the firmware update via FortiGate controller or direct management interface. 4. Reboot the FortiAP device. 5. Verify the new firmware version is running.
🔧 Temporary Workarounds
Restrict CLI Access
allLimit CLI access to trusted administrators only using role-based access controls and strong authentication.
Network Segmentation
allIsolate FortiAP management interfaces from general user networks to limit potential attack surface.
🧯 If You Can't Patch
- Implement strict access controls to limit who can access FortiAP CLI interfaces
- Monitor FortiAP CLI access logs for suspicious activity and implement alerting
🔍 How to Verify
Check if Vulnerable:
Check FortiAP firmware version via FortiGate controller or direct CLI: 'get system status'Check Version:
get system status | grep VersionVerify Fix Applied:
Verify firmware version is at or above patched versions: FortiAP-S ≥6.4.10, FortiAP-W2 ≥7.2.4 or ≥7.4.3, FortiAP ≥7.2.4 or ≥7.4.3📡 Detection & Monitoring
Log Indicators:
- Unusual CLI command execution patterns
- Multiple failed authentication attempts followed by successful CLI access
- Commands with special characters or shell metacharacters
Network Indicators:
- Unexpected outbound connections from FortiAP devices
- Anomalous traffic patterns from FortiAP management interfaces
SIEM Query:
source="fortiap" AND (event_type="cli_command" AND command="*[;&|`]*") OR (auth_failure > 3 AND auth_success = 1)