Periodic security find pruning

Don Lewis truckman at FreeBSD.org
Mon Mar 28 13:47:54 PST 2005


On 28 Mar, Eric Anderson wrote:
> Don Lewis wrote:
>
>> Why not just mount these partitions nosuid?   That will cause them to be
>> automagically be skipped by the setuid security scan, and will prevent
>> the setuid bit of any executables that happen to be backed up there from
>> being honored.
> 
> Because then I cannot create suid files, which means I cannot back them up..

Are you sure about that?

% df .
Filesystem  1K-blocks    Used   Avail Capacity  Mounted on
/dev/ad0s2f  11811982 6125698 4741326    56%    /home
% mount | grep home
/dev/ad0s2f on /home (ufs, local, nosuid, soft-updates)
% touch foo
% ls -l foo
-rw-r--r--  1 dl  dl  0 Mar 28 13:45 foo
% chmod 4755 foo
ls -l foo
-rwsr-xr-x  1 dl  dl  0 Mar 28 13:45 foo
% uname -sr
FreeBSD 6.0-CURRENT



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