lkml.org 
[lkml]   [2010]   [Nov]   [29]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH] kernel: make /proc/kallsyms mode 400 to reduce ease of attacking
On Mon, Nov 29, 2010 at 11:05:58AM -0800, H. Peter Anvin wrote:
> Can we please not use CAP_SYS_ADMIN for this? Relying on CAP_SYS_ADMIN
> is worse than anything else -- it is a fixed policy hardcoded in the
> kernel, with no ability for the system owner to delegate the policy
> outward, e.g. by adding group read permission and/or chgrp the file.
>
> Delegating CAP_SYS_ADMIN, of course, otherwise known as "everything", is
> worse than anything...

Agreed, that's why I still think that hiding lots of valuable information to
non-root users will get more users added to unmanaged sudoers files, which
will result in much more holes in the systems than we currently have.

Willy



\
 
 \ /
  Last update: 2010-11-29 22:53    [W:0.048 / U:4.652 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site