Suhosin-Stack-based buffer overflow

I am doing this vulnerability assessment of a company’s website where I have managed to find out the server is protected with the Suhosin Patch 0.9.10 which contains a Stack-based buffer overflow in the suhosin_encrypt_single_cookie function that leads to rce. But I am struggling to figure out how to exploit this.
Anyone who knows some good sources I can read or how to go about exploiting this?