CVE-2024-27782
📋 TL;DR
This vulnerability in Fortinet FortiAIOps 2.0.0 allows attackers to reuse stolen session tokens to perform unauthorized operations. Attackers can bypass authentication by crafting requests with old session tokens that should have expired. Organizations running FortiAIOps 2.0.0 are affected.
💻 Affected Systems
- Fortinet FortiAIOps
📦 What is this software?
Fortiaiops by Fortinet
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of the FortiAIOps system allowing unauthorized administrative access, data exfiltration, and potential lateral movement to connected systems.
Likely Case
Unauthorized access to sensitive operational data, configuration changes, and potential disruption of AIOps monitoring and automation functions.
If Mitigated
Limited impact with proper network segmentation and monitoring, though unauthorized access to the AIOps platform remains possible.
🎯 Exploit Status
Exploitation requires obtaining valid session tokens through other means (phishing, MITM, etc.)
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Upgrade to FortiAIOps 2.0.1 or later
Vendor Advisory: https://fortiguard.fortinet.com/psirt/FG-IR-24-069
Restart Required: Yes
Instructions:
1. Download FortiAIOps 2.0.1 or later from Fortinet support portal. 2. Backup current configuration. 3. Apply firmware upgrade through web interface or CLI. 4. Restart system. 5. Verify upgrade completed successfully.
🔧 Temporary Workarounds
Session timeout reduction
allReduce session timeout values to minimize window for token reuse
config system session-ttl
set default 300
end
Network isolation
allRestrict access to FortiAIOps management interface to trusted networks only
config firewall address
edit "trusted-networks"
set subnet 192.168.1.0 255.255.255.0
end
config firewall policy
edit 0
set srcintf "internal"
set dstintf "mgmt"
set srcaddr "trusted-networks"
set dstaddr "all"
set action accept
set schedule "always"
set service "ALL"
end
🧯 If You Can't Patch
- Implement strict network segmentation to isolate FortiAIOps from untrusted networks
- Enable detailed session logging and monitor for unusual session activity patterns
🔍 How to Verify
Check if Vulnerable:
Check FortiAIOps version via web interface (System > Dashboard) or CLI command: get system statusCheck Version:
get system status | grep VersionVerify Fix Applied:
Verify version is 2.0.1 or later using: get system status | grep Version📡 Detection & Monitoring
Log Indicators:
- Multiple session creations from same IP with old timestamps
- Session tokens used after logout/expiration events
- Administrative actions from unexpected user sessions
Network Indicators:
- HTTP requests with old session cookies
- Authentication bypass attempts to protected endpoints
SIEM Query:
source="fortiaiops" AND (event_type="session_reuse" OR (session_age>3600 AND action="authenticate"))