Learn / Level 4

Systems and memory

What happens below the application: memory bugs, privilege escalation, and sandboxes.

1. 01Memory layoutStack, heap and where programs keep things.7 min
2. 02Buffer overflowsWriting past the end of a box.7 min
3. 03Use-after-freeUsing memory that was given back.8 min
4. 04HeartbleedAn over-read that leaked the internet's secrets.7 min
5. 05ShellshockA bug in the shell itself.7 min
6. 06Privilege escalationFrom ordinary user to administrator.7 min
7. 07Sandboxes and containersWalls around code, and how they leak.8 min