Late last night, multiple groups released working exploits for the Citrix ADC path traversal flaw. First, “Project Zero India” released a simple exploit essentially consisting of two curl commands [1]. The first one will write a template file that includes a shell command of the user's choosing. The second curl request will download the result of the command execution. The exploit worked for me, but I had to make some small adjustments likely due to differences in command-line tool flavors.