lkml.org 
[lkml]   [1996]   [May]   [8]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
SubjectRe: /proc/<pid>/mem unreadable
Date
> > What about suid scripts?
> >
> suid scripts are not allowed, the setuid bit is ignored for scripts.

Of course, because that is an easy way to plug a security hole.

I was thinking that it would be good to add all the checks to
let suid scripts run in a secure manner. I think it would involve
resolving symlinks to find the true inode which would be used as
the file. Then of course the inode needs a filename, so we
generate one in /proc/suidexec. (damn unix filesystem...)

You would also need a shell that ignores $IFS and such.
You could call that a user space issue, or you could just
completely clear the environment.

This is post-2.0 of course, because it takes time to find all the
checks that are needed.


\
 
 \ /
  Last update: 2005-03-22 13:37    [W:0.029 / U:0.208 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site