Date: Wed, 05 Dec 2012 20:26:55 -0600 From: Paul Schmehl <pschmehl_lists@tx.rr.com> To: Tim Daneliuk <tundra@tundraware.com> Cc: FreeBSD Mailing List <freebsd-questions@freebsd.org> Subject: Re: Somewhat OT: Is Full Command Logging Possible? Message-ID: <2C35284AF2FD11FE2D62871A@Pauls-MacBook-Pro.local> In-Reply-To: <50BFEE61.7070005@tundraware.com> References: <50BFD674.8000305@tundraware.com> <CADy1Ce5CCA4ExOok4DndA4C-MazbegZY1OKztCNqUZHGzLJgTA@mail.gmail.com> <50BFDD51.5000100@tundraware.com> <CADy1Ce4c2b3zFxentKvXnNw0y5zhurYgaAXWbqybgtQhG9w9ZA@mail.gmail.com> <50BFEE61.7070005@tundraware.com>
next in thread | previous in thread | raw e-mail | index | archive | help
--On December 5, 2012 7:01:21 PM -0600 Tim Daneliuk <tundra@tundraware.com> wrote: > On 12/05/2012 06:35 PM, Kurt Buff wrote: >> On Wed, Dec 5, 2012 at 3:48 PM, Tim Daneliuk <tundra@tundraware.com> >> wrote: >>> On 12/05/2012 05:44 PM, Kurt Buff wrote: >>>> >>>> On Wed, Dec 5, 2012 at 3:19 PM, Tim Daneliuk <tundra@tundraware.com> >>>> wrote: >>>>> >>>>> I am working with an institution that today provides limited privilege >>>>> escalation >>>>> on their servers via very specific sudo rules. The problem is that >>>>> the administrators can do 'sudo su -'. >>>> >>>> <snip> >>>> >>>> >>>> sudo is misconfigured. >>>> >>>> man 5 sudoers and man 8 visudo >>>> >>>> >>>> >>>> Kurt >>>> >>> >>> I'm sorry Kurt, I'm sort of dense today, I'm not sure what you're >>> saying. Are you suggesting that there is a way to configure >>> sudo so that if someone does 'sudo su -' to become an admin, >>> sudo can be made to log every command they execute thereafter? >> >> No, I'm saying that sudo should not be configured to allow 'sudo su -'. >> >> Since you say that the users are provided "limited privilege >> escalation on their servers via very specific sudo rules", it seems to >> me that one of three things is going wrong: >> >> o- Something is wrong with the configuration of sudoers if they can su >> to root when they shouldn't be able to do so >> >> o- Someone has misconceived what "limited privilege escalation on >> their servers via very specific sudo rules" actually means, and >> deliberately has it configured to allows users to su to root >> >> o- The users' accounts are already root equivalent, which, depending >> on the version and configuration of sudo, might give them the ability >> to sudo to root regardless of the contents of the sudoers file (see, >> for instance, the screen in FreeBSD when you perform 'cd >> /usr/ports/security/sudo' and then 'make config') >> >> Kurt >> > Oh, OK, I wasn't being clear: > > - *Some* users are granted the ability to do sudo su - These > are the sysadmins. > > - All other user are given selective ability to run only a few > things via sudo. This varies by department and is controlled > through a combination of sudo rules and central LDAP group > membership control. This is necessary because, for example, > some DBAs need this when installing a particular client. > Install security/sudoscript. Paul Schmehl, Senior Infosec Analyst As if it wasn't already obvious, my opinions are my own and not those of my employer. ******************************************* "It is as useless to argue with those who have renounced the use of reason as to administer medication to the dead." Thomas Jefferson "There are some ideas so wrong that only a very intelligent person could believe in them." George Orwell
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?2C35284AF2FD11FE2D62871A>