lkml.org 
[lkml]   [1996]   [May]   [10]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
SubjectRe: /proc/<pid>/mem unreadable
Date
> 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'd have inconsistencies because you'd need to block them over NFS
file systems where you can't lock down an inode in that way.

> 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.

So you have a setuid wrapper like everyone else does nowdays - a secure
C program that therefore avoids the setuid script issue.




\
 
 \ /
  Last update: 2005-03-22 13:37    [W:0.050 / U:0.016 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site