Date: Thu, 12 Oct 2017 08:12:59 -0400 From: Graham Christensen <graham@...hamc.com> To: oss-security@...ts.openwall.com Subject: Re: Privilege escalation with kill(-1, SIGKILL) in XNU kernel of macOS High Sierra One follow-up for the discussion on if this is a DoS or privilege escalation, in the logs we saw: Service exited due to signal: Killed: 9 sent by nix-daemon and were able to (inconsistently) reproduce this with other unprivileged users. This indicated to us that we hadn’t tripped just a crashing bug, but actually escalated beyond the normal access control protections of kill. Graham
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