4 ms·

Another reason to adopt OpenBSD style pledge/unveil in Linux.

• somat 3y ago
  Would that help? sshd, by design, opens shells. the backdoor payload was basically to open a shell. that is, the very thing that sshd has to do. The pledge/unvail system is pretty great, but my understanding is that it do not do anything that the linux equivalent interfaces(seccomp i think) cannot do. It is just a simplified/saner interface to the same problem of "how can a program notify the kernel what it's scope is?" The main advantage to pledge/unveil bring to the table is that they are easy to use and cannot be turned off, optional security isn't.
• jeroenhd 3y ago
  By design, OpenSSH will start an interactive shell with either the capabilities to escalate to root or direct root permissions. I don't think pledge/unveil will work any better than seccomp already does. I do like the pledge/unveil API, but I don't think it would've made much of a difference.