Certainly, rather safe than sorry ;)

On Mon, Feb 9, 2009 at 7:52 PM, Kees Cook <[email protected]> wrote:

> Thanks for taking the time to report this bug and helping to make Ubuntu
> better.  Removing /tmp is an action only root can perform.  This isn't
> considered a security problem.  Additionally, many local denial of service
> issues are not considered security problems:
> https://wiki.ubuntu.com/DebuggingSecurity#Local%20Denial%20of%20Service
>
> ** Changed in: gdm (Ubuntu)
>     Assignee: (unassigned) => Kees Cook (kees)
>       Status: New => Invalid
>
> ** This bug is no longer flagged as a security issue
>
> ** Visibility changed to: Public
>
> --
> Can't login to normal user accounts without a /tmp directory
> https://bugs.launchpad.net/bugs/327441
> You received this bug notification because you are a direct subscriber
> of the bug.
>
> Status in "gdm" source package in Ubuntu: Invalid
>
> Bug description:
> Binary package hint: gdm
>
> Accidentally removed my /tmp directory the other day and rebooted for
> another reason.  When I tired to login back in to my account via GDM
> (GNOME), I am presented with an error message that is thrown by xsession.
>  The error message does not indicate that the /tmp directory doesn't exist.
>
> The fix is quite simple; reboot to recovery mode and open a root shell.  By
> doing this, the /tmp directory is automatically created.  Now you can once
> again login via GDM.
>
> Tested and reproduced on Ubuntu 8.04.2.
>
> This essentially created a Denial of Service condition - one can simply
> remove /tmp and it will prevent local users from logging in via GDM.
>

-- 
Can't login to normal user accounts without a /tmp directory 
https://bugs.launchpad.net/bugs/327441
You received this bug notification because you are a member of Ubuntu
Bugs, which is a direct subscriber.

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