🚀 go-pugleaf

RetroBBS NetNews Server

Inspired by RockSolid Light RIP Retro Guy

Thread View: comp.os.linux.security
8 messages
8 total messages Started by DragonII Fri, 28 Nov 2003 10:42
usermod -u 600 root
#35
Author: DragonII
Date: Fri, 28 Nov 2003 10:42
8 lines
1326 bytes
Hi,

Having a problem as you can see on the subject line. Can't access any
files anymore (at least the ones that root had access to) and that
poses a problem.
Does anyone have a backdoor solution to this? Thanks in advance.

DragonII
Re: usermod -u 600 root
#36
Author: Doug Laidlaw
Date: Fri, 28 Nov 2003 12:41
29 lines
2157 bytes
DragonII wrote:

> Hi,
> 
> Having a problem as you can see on the subject line. Can't access any
> files anymore (at least the ones that root had access to) and that
> poses a problem.
> Does anyone have a backdoor solution to this? Thanks in advance.
> 
> DragonII

The usermod command changes the parameters of the user root.  Have you tried
to give root the UID 600?  To change a file to permissions 600 the command
is chmod.  That said, I don't know enough to get you out of it.  I would
try one of the GUI user managers, but in turn, you would need to run it as
root.  I would have thought that root is root, and its uid doesn't matter. 
Plainly, that is not correct. Man usermod says that the change will be
applied only to files in root's home directory, and others must be changed
manually - don't ask me how.  Perhaps the simplest answer would be to run
usermod again and change root back to what it was (0 (zero) in my Mandrake
system.)  Do it in the same place that you ran it before.

HTH,

Doug.
-- 
Registered Linux User No. 277548.
They say lightning never strikes twice in the same place.  My typing is
about as accurate.  Apologies for any typos that slip in. - Doug.
Re: usermod -u 600 root
#37
Author: Geoffrey King
Date: Fri, 28 Nov 2003 12:46
14 lines
1747 bytes
On Fri, 28 Nov 2003 11:42:14 +0100, DragonII wrote:

> Hi,
> 
> Having a problem as you can see on the subject line. Can't access any
> files anymore (at least the ones that root had access to) and that
> poses a problem.
> Does anyone have a backdoor solution to this? Thanks in advance.

Boot up in single user mode and edit /etc/passwd. Failing that download
one of those rescue ISO's off the net and do it that way.

-- 
-Geoff
Re: usermod -u 600 root
#38
Author: DragonII
Date: Fri, 28 Nov 2003 13:34
16 lines
1683 bytes
On Fri, 28 Nov 2003 12:46:48 GMT, Geoffrey King
<gking@evildomain.dyndns.org> wrote:

>On Fri, 28 Nov 2003 11:42:14 +0100, DragonII wrote:
>
>> Hi,
>> 
>> Having a problem as you can see on the subject line. Can't access any
>> files anymore (at least the ones that root had access to) and that
>> poses a problem.
>> Does anyone have a backdoor solution to this? Thanks in advance.
>
>Boot up in single user mode and edit /etc/passwd. Failing that download
>one of those rescue ISO's off the net and do it that way.

Thanks. It worked. Live and learn...
Re: usermod -u 600 root
#39
Author: Geoffrey King
Date: Fri, 28 Nov 2003 18:32
16 lines
1968 bytes
On Fri, 28 Nov 2003 14:34:03 +0100, DragonII wrote:

>>> Having a problem as you can see on the subject line. Can't access any
>>> files anymore (at least the ones that root had access to) and that
>>> poses a problem.
>>> Does anyone have a backdoor solution to this? Thanks in advance.
>>
>>Boot up in single user mode and edit /etc/passwd. Failing that download
>>one of those rescue ISO's off the net and do it that way.
> 
> Thanks. It worked. Live and learn...

This is why physical security is important :)

-- 
-Geoff
Re: usermod -u 600 root
#34
Author: Basil Heathenston
Date: Sat, 29 Nov 2003 05:57
23 lines
2160 bytes
"Geoffrey King" <gking@evildomain.dyndns.org> wrote in message
news:pan.2003.11.28.18.32.30.132000@evildomain.dyndns.org...
> On Fri, 28 Nov 2003 14:34:03 +0100, DragonII wrote:
>
> >>> Having a problem as you can see on the subject line. Can't access any
> >>> files anymore (at least the ones that root had access to) and that
> >>> poses a problem.
> >>> Does anyone have a backdoor solution to this? Thanks in advance.
> >>
> >>Boot up in single user mode and edit /etc/passwd. Failing that download
> >>one of those rescue ISO's off the net and do it that way.
> >
> > Thanks. It worked. Live and learn...
>
Or not. Avoid being root. Write it on the chalkboard 500 times:
I will not log in as root. I will not log in as root. ...

> This is why physical security is important :)
>
This is why NOT COMPUTING AS ROOT is important.

-BH
Re: usermod -u 600 root
#32
Author: /dev/rob0
Date: Sun, 30 Nov 2003 03:23
16 lines
1710 bytes
In article <gzWxb.7999$Cj4.7245@twister.socal.rr.com>,
  Basil Heathenston wrote:
>> This is why physical security is important :)
>>
> This is why NOT COMPUTING AS ROOT is important.

All this makes me wonder what the OP had hoped to accomplish with this
root oops, creative though it was? Another lesson is to TRUST IN THE
UNIX GODS who have gone before you. If they thought there was a benefit
in changing root's UID to 600, they would have done it a decade or more
ago.

To restate IOW, if you don't understand something, don't change it.
-- 
  /dev/rob0 - preferred_email=i$((28*28+28))@softhome.net
  or put "not-spam" or "/dev/rob0" in Subject header to reply
Re: usermod -u 600 root
#33
Author: Frank Dekervel
Date: Sun, 30 Nov 2003 14:35
20 lines
2301 bytes
op Sunday 30 November 2003 04:23 , schreef /dev/rob0  in
<slrnbsiom8.re5.rob0@linuxbox.linux.box> :

>> This is why NOT COMPUTING AS ROOT is important.
> 
> All this makes me wonder what the OP had hoped to accomplish with this
> root oops, creative though it was? Another lesson is to TRUST IN THE
> UNIX GODS who have gone before you. If they thought there was a benefit
> in changing root's UID to 600, they would have done it a decade or more
> ago.
> 
> To restate IOW, if you don't understand something, don't change it.

or just change it, and find out why you shouldn't have changed it :p we all
burn our fingers sometimes, don't we ...


-- 
Frank Dekervel
kervel at drie dot kotnet dot org
Thread Navigation

This is a paginated view of messages in the thread with full content displayed inline.

Messages are displayed in chronological order, with the original post highlighted in green.

Use pagination controls to navigate through all messages in large threads.

Back to All Threads