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Full Discussion: Root acces bug through sudo!
Special Forums Cybersecurity Root acces bug through sudo! Post 302910403 by rbatte1 on Thursday 24th of July 2014 08:28:41 AM
Old 07-24-2014
From this /etc/sudoers, either you have everything or nothing. If you can sudo sudo aaa, then you can just sudo aaa

To have any access, one must either be in the admin group or be the named user obscured by XXXXXX unless this is another group as the comment suggests. If you qualify under either, then you have full access. If you do not, you have no access.


As a simple test, I created a new user on a test server without any sudo rules and got the following:-
Code:
[RBATTE2@Test-RHEL-63 ~]$ sudo ls -l 

We trust you have received the usual lecture from the local System
Administrator. It usually boils down to these three things:

    #1) Respect the privacy of others.
    #2) Think before you type.
    #3) With great power comes great responsibility.

[sudo] password for RBATTE2: 
RBATTE2 is not in the sudoers file.  This incident will be reported.
[RBATTE2@Test-RHEL-63 ~]$ sudo sudo ls -l
[sudo] password for RBATTE2: 
RBATTE2 is not in the sudoers file.  This incident will be reported.
[RBATTE2@Test-RHEL-63 ~]$ ls -l /etc/sudoers
-r--r-----. 1 root root 4002 Mar  1  2012 /etc/sudoers
[RBATTE2@Test-RHEL-63 ~]$ cat /etc/sudoers
cat: /etc/sudoers: Permission denied
[RBATTE2@Test-RHEL-63 ~]$

Is this the /etc/sudoers file that is being referenced by the user in question? As you can see, I'm not even allowed to read the file, as this could give an attacker a target.


Robin
 

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mtailrc(5)							   User Manuals 							mtailrc(5)

NAME
mtailrc - Configuration file for monkeytail DESCRIPTION
A monkeytail configuration uses Apache-style syntax to declare "groups" of files to be tailed. Best explained with an example: <group testgroup> prefix 'server2: ' sudo yes <file> filename /var/log/apache2/access.log prefix 'server1: ' host server1.example.com </file> <file> filename /var/log/apache2/access.log host server2.example.com sudo no </file> </group> OPTIONS
All options can be either put inside a group or file block. Options inside a file block override those in the group block. filename filename filename defines the filename for this block. host remote-host (optional) host defines that this block's file is to be tailed on a remote server. sudo yes|no|1|0 sudo is a boolean specifying whether this file should be tailed as root. This option is supported for both local and remote files (in both cases you will potentially be prompted for your password). prefix "string: " prefix allows you to specify a short string that will be prepended to every line that is displayed for that given file. FILES
~/.mtailrc - user specific monkeytail config SEE ALSO
mtail(1), tail(1) AUTHOR
Martyn Smith <martyn@dollyfish.net.nz> mtail May 2008 mtailrc(5)
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