Tags: format string vulnerability 

Rating: 4.0

We all want to keep our secrets secure and what is more important
than our precious diary entries? We made this highly secure diary
service that is sure to keep all your boy crushes and edgy poems safe
from your parents.

nc diary.vuln.icec.tf 6501

Original writeup (https://github.com/WCSC/writeups/tree/master/icectf-2016/dear_diary).