On Tue, Nov 05, 2002 at 03:01:02PM +0100, Dag-Erling Smorgrav wrote: > Markus Friedl <[EMAIL PROTECTED]> writes: > > yes, geteuid() could work, too, but why is ssh-agent running > > with a privileged user id? shouldn't both the real and > > effective user id be the uid of the user? > > ssh-agent is started by pam_ssh which is run under xdm's uid (i.e. 0). > It switches to the user's egid and euid before starting ssh-agent.
but shouldn't it do something like seteuid(getuid()); setuid(getuid()); executing ssh-agent? > FreeBSD's execve() does not change the real user id (I don't think > POSIX allows it) so ssh-agent has real user-id 0. It should do > setuid(geteuid()) early on to guard against this. Alternatively, > pam_ssh could use a home-grown privilege-dropping popen() instead of > libc's popen() to start ssh-agent. > > DES > -- > Dag-Erling Smorgrav - [EMAIL PROTECTED] To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-current" in the body of the message