Ryan from Bishop Fox joins to describe their work on "Building an Exploit for FortiGate Vulnerability CVE-2023-27997." After Lexfo published details of a pre-authentication remote code injection vulnerability in the Fortinet SSL VPN, Bishop Fox worked up a proof of concept demo.

This research share how they were able to create that proof-of-concept exploit, step by step. The researchers state "Our debugging environment consisted of a FortiGate 7.2.4 virtual machine which we modified to disable some self-verification functionality. After bypassing these integrity checks, we were able to install an SSH server, BusyBox, and debugging tools such as GDB."

The research can be found here:

• Building an Exploit for FortiGate Vulnerability CVE-2023-27997