App - Script

i’m trying to escalate privilege , and stuck at step 11-12, i escalated in step 10 through get proxycommand, and sudo -l shows that i can use make with **-12 user, i wrote bash.c, and Makefile, but when i try to execute it i get the following error:
“app-script-ch14-11@challenge02:/tmp$ sudo -u app-script-ch14-12 make bash
sudo: unable to open audit system: Permission denied
sudo: pam_open_session: System error
sudo: policy plugin failed session initialization”

Hello,
Check this : https://www.root-me.org/?page=forum&id_thread=15616&lang=en  😉
Have fun !