[PLUG] [Updates]PLUG meeting on 6th Oct. at 5pm @SICSR

Arun Khan knura9 at gmail.com
Thu Oct 11 00:49:57 PDT 2012


On Sun, Oct 7, 2012 at 10:20 AM, Sunil Beta Baskar <betasam at gmail.com> wrote:

... snip ...

> [ SetUID bit ]
> Behavior on linux-kernel 3.2.x with
> $ chmod a+s somefolder
> $ ls -ltr somefolder
> shows all files inside somefolder with their original rights and
> *owners* on ext4. This is on Debian Wheezy.
>
> Although the setUID bit is still used, it is not recommended if you
> want to have any sense of security on a system.

Per your recommendation about usage of SetUID bit, please suggest
alternatives for the following that come to my mind offhand (I :

$ for x in sudo X chsh passwd; do ls -l $(which ${x}); done
-rwsr-xr-x 1 root root 71248 Jan 31  2012 /usr/bin/sudo
-rwsr-sr-x 1 root root 10184 Mar 22  2012 /usr/bin/X
-rwsr-xr-x 1 root root 37096 Apr  9  2012 /usr/bin/chsh
-rwsr-xr-x 1 root root 42824 Apr  9  2012 /usr/bin/passwd

-- Arun Khan



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