CVE-2024-41570
📋 TL;DR
CVE-2024-41570 is an unauthenticated Server-Side Request Forgery vulnerability in Havoc 2 C2 framework's demon callback handling. It allows attackers to send arbitrary network traffic from the team server, potentially exposing internal networks or enabling further attacks. This affects all users running Havoc 2 version 0.7 with default configurations.
💻 Affected Systems
- Havoc 2
📦 What is this software?
Havoc by Havocframework
⚠️ Risk & Real-World Impact
Worst Case
Attackers could pivot through the team server to attack internal systems, exfiltrate sensitive data, or use the server as a proxy for attacks against other targets.
Likely Case
Attackers will use the vulnerable server to scan internal networks, access internal services, or launch attacks against other systems while hiding their true origin.
If Mitigated
With proper network segmentation and egress filtering, the impact is limited to the team server's network segment and potential information disclosure about internal services.
🎯 Exploit Status
The blog post includes technical details and proof-of-concept information that could be weaponized. SSRF vulnerabilities are commonly exploited in the wild.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not available
Vendor Advisory: Not available
Restart Required: No
Instructions:
No official patch is available. Users should upgrade to a newer version if available or implement workarounds.
🔧 Temporary Workarounds
Network Segmentation
allIsolate the Havoc team server in a restricted network segment with limited egress access
Egress Filtering
allImplement strict outbound firewall rules to limit what the team server can communicate with
🧯 If You Can't Patch
- Deploy network monitoring to detect unusual outbound connections from the team server
- Consider migrating to alternative C2 frameworks or versions without this vulnerability
🔍 How to Verify
Check if Vulnerable:
Check if running Havoc 2 version 0.7. Review the demon callback configuration and test for SSRF using controlled endpoints.Check Version:
Check Havoc 2 version in the team server interface or configuration filesVerify Fix Applied:
Test that the team server can no longer make arbitrary outbound requests through demon callbacks.📡 Detection & Monitoring
Log Indicators:
- Unusual outbound connections from team server
- Demon callback requests to unexpected destinations
Network Indicators:
- Team server making connections to internal services it shouldn't access
- Outbound traffic to unexpected IP ranges
SIEM Query:
source_ip=team_server AND (destination_port=80 OR destination_port=443 OR destination_port=22) AND NOT destination_ip IN allowed_ips