lkml.org 
[lkml]   [2006]   [Aug]   [19]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [RFC] [PATCH] file posix capabilities


--- Crispin Cowan <crispin@novell.com> wrote:

> > At least some of the Linux capabilities lend
> themselves to easy
> > privilege escalation to gaining other capabilities
> or effectively
> > bypassing them.
> >
> Certainly; cap_sys_admin effectively gives you
> ownership of the machine.
> But that is fundamental to the POSIX Capabilities
> model, and not
> something that Serge can change.

In turn it is fundamental to the curious
granularity of privileged operations in Unix.

I maintain that the real value in the POSIX
capability model derives from seperating the
permission to violate policy from the UID.

Granularity of such privilege is a bonus, and
a matter of considerable debate. DGUX ended
up with over 330 distinct capabilities, while
Irix had (last I looked) 24, and Solaris
came in somewhere between. All these systems
work.


Casey Schaufler
casey@schaufler-ca.com
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2006-08-19 19:11    [W:0.075 / U:3.840 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site