App - System

The ELF32 Race condition challenge seems to be broken. The tmp file exists and contains the password; all a challenger needs to do is cat /tmp/tmp_file.txt to get the flag. The file cannot be deleted as the app-systeeme-ch12 user.

It’s a known issue. Thank you for reporting it.

It looks like this challenge is broken again.

– app-systeme-ch12@challenge02: $ ./ch12
– [-] Can’t create tmp file : Permission denied
– app-systeme-ch12@challenge02: $ ls -la /tmp/tmp_file.txt
– -r—r----- 1 app-systeme-ch12-cracked app-systeme-ch12 0 Nov 21 16:43 /tmp/tmp_file.txt

And I can’t delete or read as app-systeeme-ch12 user.