4 ms·
What is preventing an attacker from overwriting the last xor and cmp instruction sequence with nop instructions?
by Annatar 8y ago
What is preventing an attacker from overwriting the last xor and cmp instruction sequence with nop instructions?
- ben_bai 8y agoW^X (W xor X) which means memory is either writeable or executable. Guess what, OpenBSD maps code only executable and not writeable.