Ubuntu Security :: Actions Requiring Root Privileges Asks For Wrong User ?
May 24, 2011
In our group we use NIS and have a group set up called netadmin which is given root privileges on each machine. Each machine also has a localuser called localuser created and used during installation. When logged in as a member of netadmin, attempting any action that requires root privileges (e.g. installing software in Ubuntu Software Center) results in a prompt asking for localuser's password, not the current user's password.
Does anyone know the cause? Configuration issue or Ubuntu issue? We can get around it.
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Apr 23, 2010
I am using Red Hat and was wondering how to disable username and password only login and require that a PPK secure key file be used for authentication ? I can log in using the secure private key and the public key that is in ~/.ssh/authorized_keys but i can still log in using the plain username and password login.
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Feb 5, 2011
i am having problems with privileges i have created a new user with my name, but i cant get root privileges on it. i need the same privileges as the root profile.
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Apr 12, 2010
I run ProFTPd with TLS authentication on my Debian Lenny server. My problem is that despite of the fact that my users connect chrooted, one of my friends had root privileges after logging in form a Macintosh and could browse the root directory, too.
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Mar 25, 2010
Having read on the forums about some of the dangers of running Wireshark as root, I would like to know if anyone can suggest some alternative packet sniffers/network analyzers which will offer similar results but without the security issues. I am using Karmic Koala on a Fujitsu Siemens laptop with wireless router (firewall enabled)
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Apr 23, 2011
I just installed gufw and was in quite a hurry. A root acces prompt came up as I started gufw for the first time, and I quickly responded with appropriate password. All I saw in this hurry was that it had something to do with the usr/share directory.So, here's my question: Does gufw require root access when first starting up
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Jan 2, 2010
Is there a way to grant 'root' privileges to my user account? My account name ... I'll call it 'masterskop' as it is my forum name here, but not on my computer.Would it look like this in the sudoers' file?My purpose is to get access to all the folders and files in the 'File System'. The root and lost+found folders have 'Xs' on them...No access! And for example, under properties of the 'var' folder it states that 'you are not the owner, so you cannot change these permissions.' How can I get access to all of it everytime I login as the main user of my computer? I do not have anyone else using this computer.I did edit this file and used my real user name ... logged out and logged back in and still I do not have access/edit these folders and files.
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Feb 26, 2011
i am trying to recover some files on a partition through the ubuntu live cd (they are hidden files and i can't find anything else that would work) and it said i needed root privaleges in order to copy them. is this possible and how do i do it
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Jul 4, 2010
I want to create a user who has all the privileges that root user has.I know how to create a user but i don't know how to grant root privileges to him.
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Nov 2, 2010
How to add user with root privileges and SSH access.
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Apr 9, 2011
I create a user in CentOS 5.5 for using with my email account.
useradd ralf
passwd ralf
use "ralf user" only for my email account. How can I remove others privileges/permissions? Also, I want to use "ralf user" without root privileges/permissions.
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Jul 10, 2011
I've been using Ubuntu for like a year now. Whenever I want root privileges I just type sudo and enter my User password. I wanna know if there's a way to change this, in a way that My User password is: "ABC" and the password needed to have root privileges is: "ABC123". I have no problem using the terminal, I actually prefer it to any GUI, it just seems easier to me.
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Apr 11, 2010
I have searched somewhat this forum but haven't yet found a similar post using the keywords I entered but perhaps there is already a similar post then please refer me to it.I am trying to add a user account "Guest" to allow people on my laptop without giving them access to vital parts of the computer. Basically, I want them to only be able to view their own home directory and access internet. Nothing more.I have set the group to "guest" and changed the other home directories of other users to owner access only.
Guest still has access to root and is still allowed to perform actions in various critical areas (deleting files from for example my Windows 7 partition). This I also want to prevent. I was thinking to set each directory's permissions to Owner and Group only and remove Others access.My questions:
1. Will this have any undesirable impact (programs of main user accounts not able to access certain directories)? For guest user I don't care as long as internet works.
2. When I start User Manager and disable for Guest all options except "access internet" (so I also disable access to CDROM), the guest can still access the CDROM. Does this mean the User Settings menu has no effect or is overruled by something?
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Oct 14, 2009
How to allow access to some commands having root privleges to be run by non root user. I am new to unix/linux and I have a major assignment. I have to find ways to run particular commands which can be run only by root from a non root user. I know sudo is one of the way but i need some different approach.
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Feb 20, 2010
i do need to create 1 user who has similar to root privileges but the username will not be root.
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Jul 20, 2010
I Installed the maintained package, Day one everything worked fine, I set a dummy database and work on it from VM windows. Day two weird errors, I searched around couldn't find the problem, the error was related to The root user losing privileges. I don't remember the exact error. So I decided to Completely remove the DB with apt-get remove mysql-Server-5.1. It gets stuck during the uninstall, I left the machine for a day and a half to uninstall mysql. I realized it was no use, I tried to Restart and try again, but I am getting the same thing.
Code:
finito@finito-desktop:~$ sudo apt-get remove mysql-server-5.1
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages were automatically installed and are no longer required:
dbconfig-common libhtml-template-perl mysql-server-core-5.1 libaprutil1-ldap
apache2-mpm-prefork apache2-utils libmcrypt4 apache2.2-common libt1-5
libaprutil1-dbd-sqlite3 apache2.2-bin wwwconfig-common php5-common
javascript-common libjs-mootools
Use 'apt-get autoremove' to remove them.
The following packages will be removed:
mysql-server-5.1
0 upgraded, 0 newly installed, 1 to remove and 0 not upgraded.
1 not fully installed or removed.
After this operation, 15.7MB disk space will be freed.
Do you want to continue [Y/n]? y
(Reading database ... 231901 files and directories currently installed.)
Removing mysql-server-5.1 ...
it stays stuck at Removing mysql-server-5.1 ...
I can't progress I am at the brink now, my only option right now is format, but I don't wanna do that. This setup is almost 5 years old and I have gone with many ups and downs with it. From Windows to 8.04 to 8.10 to 9.04 to 9.10 to now 10.04 each year loving the resilience of Ubuntu and the Linux architecture. I don't want to believe that this has killed my spree.
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Jul 17, 2010
I have written a simple perl program to add a command to iptables. Here is my code :
Code:
#! /usr/bin/perl
print "Content-type: text/html
";
system("iptables -A FORWARD -s 192.168.0.2 -j DROP");
I put this file in cgi-bin folder of Apache server. Here is my problem : when I run this file with shell as root user it makes change to iptables, but when I use my browser to run this file, it doesn't make any change. I'm sure this is because Apache doesn't have permission to manipulate iptables. How can I start Apache as a user with root privileges ?
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Nov 6, 2010
Is there any way to user can increase or lower his privileges? I tried by "semanage login" but it works only for admin i think. I would like for example change range form s0:c0 to s0:c0.c10 and vice versa.
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Sep 13, 2010
I'm running 10.04 running daily updates. A couple days back, I saw an update related to mounting volumes. Not sure if this is what broke my system, but might be. When attempting to mount a partition from nautilus, I get a message saying I do not have authorization. It does not even ask for my password, just fails. I tried running updates and this asks for my password and accepts it fine. I opened disk utility from the menus and tried to mount the volume from there but also got the same permission denied, not authorized without even being asked for my password.
I then ran gksu palimpsest. I was asked for my password and was able to mount and unmount partitions from there. However, when mounted, my applications and nautilus cannot access the data in the partitions mounted using gksu palimpsest. In nautilus, I can navigate to /media/Data (the partition in question) but I get "THE FOLDER CONTENTS CANNOT BE DISPLAYED You do not have the permissions necessary to view the contents of "Data"." When I open nautilus via gksu in the terminal, I do have full access to the partitions.
How do I get my privileges back for my user account. I am the only user on the computer, and I have never set up a root account since my upgrade to 10.04 months ago. I tried of course the Administration->Users and Groups menu, but I am not permitted to change the account type or open advanced settings. I click the button, but nothing happens, not even a password request. Running gksu admin-settings on the terminal allows me access. My current settings are attached.
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May 26, 2011
Figured out a straight shot at connecting to the Internet in Fedora 15. Follow these commands.
1.)****** SWITCH TO ROOT USER if you don't have privileges*******
2.) cd /etc/sysconfig/network-scripts
3.) rm ifcfg-XXXXX (DO NOT REMOVE THE IFCFG-LO)
4.) system-config-network
-> Once in this screen, press the enter key on "Device configuration"
-> Configure your network statically. ( I did the following.) Name: leave as default Device: Leave as default DESELECT "Use DHCP" Set Static IP as 192.168.2.117 (or 192.168.1.117) Set NetMask as 255.255.255.0 Set "Default Gateway IP" AND "Primary DNS Server" to 192.168.2.1 (or 192.168.1.1)
[Code]..
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Nov 5, 2010
i have a program from windows that requires a .bat file for installation, i open it with Wine Windows Program Opener and opens the CMD, if i opened this in windows it would install because i am on the admin account but will not if i am not admin, opening it on here it thinks i am not admin, how can i make it think i am? here are screen grabs,
it shows this for a few seconds....
Screenshot-1.jpg
then shows this, pressing return closes the window
Screenshot-2.jpg
i am using Ubuntu 10.04 LTS - Lucid Lynx
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Feb 21, 2011
i am relatively new to ubuntu. Just recenty i have not been able to access certain files(for example the history and bookmarks in the firefox folder), download files individually from the internet(music,fonts,etc), recieving an error message
Quote: Originally Posted by firefox error console
Error: [Exception... "Component returned failure code: 0x80520015 (NS_ERROR_FILE_ACCESS_DENIED) [nsIFileOutputStream.init]" nsresult: "0x80520015 (NS_ERROR_FILE_ACCESS_DENIED)" location: "JS frame :: file:///usr/lib/firefox-3.6.13/components/nsSessionStore.js :: sss_writeFile :: line 2944" data: no][code]...
i have sudo priveleges and can install via update manager. i read somewhere that compizfusion might affect access permissions and i do use compiz and emerald at the same time.
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Aug 17, 2009
I want to give Administrator privileges to Root user in Linux Domain Controller
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Sep 26, 2010
I often get responses from people who first say: "Are you sure? You want your network to be exposed to the outside world?" I am not experimenting on a Production Server of NASA or any Security Concern Department. Friends, there is no harm in experimenting on your personal computer or on a test computer which is isolated from the production environment. Look at hackers! What do they do? If they don't know how security is breached then how would they come up with security measures?
If my question reads... "How to let any user perform Administrative Tasks on a Linux System irrespective of his/her privileges on that particular system?" then I would not get the right answers in the first place. They will say... "You are letting everyone destroy your system... are you sure you want to do that?" My question is: Why should we restrict ourselves from experimenting even if it sounds weird to other people?
I give you an example where it is desirable to let an unprivileged user perform certain tasks. You want to know if there are any employees in your office who are storing videos in their home directory and filling up the disk space to a great amount. You have a department called "Command Center or Data Center Operations or Help Desk" call it whatever you would, whose work is to monitor such activities, and you create an account "monitor" for them to monitor such activities but they are not able to do them:
[Code]..
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Oct 15, 2010
One user in my company wants to run some flush cache queries on a MySql database, it needs "reload" privileges of Administration, how secure is to give this rights to a normal user ?
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Apr 22, 2011
Having trouble adding a regular user with ssh access on Hardy 8.04. I can ssh into root, but not into the newly created regular user with the same ~/.ssh/authorized_keys
Code:
sshd_config has:
AllowGroups sshlogin
AllowUsers user root
[code]....
what could be preventing ssh login to ~user? And yes I would like to disable root ssh access, but it would be nice to be able to ssh into user first
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Jan 10, 2011
We have a shared directory that is very important, lately strange things have been happening, users claiming file are missing etc. All permissions are OK, and as far as I can see files are not going missing.I look for ether a program out there all ready, or guidlines on a script that will monitor the dates and times a user accesses this directory, if they create a new file, remove an old one etc.
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Nov 3, 2010
I have one Centos Server and I want to forward root mail to 1 external account: [URL] I installed sendmail and created /root/.forward with this content: [URL] and I sent a test mail with this command: /usr/sbin/sendmail root <prueba.txt But nothing was forwarded.
After that I ran the same command with the verbose option:
/usr/sbin/sendmail -v root <prueba.txt
And this is the output:
root... Connecting to [127.0.0.1] via relay...
220 localhost.localdomain ESMTP Sendmail 8.13.8/8.13.8; Wed, 3 Nov 2010 21:09:39 -0600
>>> EHLO localhost.localdomain
250-localhost.localdomain Hello myfriend [127.0.0.1], pleased to meet you
250-ENHANCEDSTATUSCODES
[code]....
For some reason sendmail tried to connect to example.com smtp server and couldn't reach it. I am sure this is because the smtp server for example.com domain is not example.com is mail.example.com. Besides mail.example.com requires authentication, username , password and the smtp port is not the default 25 is 9999. configure sendmail to forward root mail to a smtp server that requires authentication, username, password with a not the default 25 port?
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May 4, 2010
im using "rdesktop -u username ip" in the terminal to connect to a windows machine on another lan. (my local machine is Ubuntu 10 and remote user has Win7)
i can connect and see his desktop, plus i can control the remote mouse, but i cant see what the user is doing and neither can the user see what im doing on his machine.
is there a way with rdesktop or another .deb app that i can use that allows me to control the remote user's machine and at the same time allow him to see what im doing and/or visa versa ?
i also tried VNC veiwer and it too does not give me the required results. is there something that the windows owner need to do ?
i need this for showing users how to do certain tasks on their machines.
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Jun 5, 2010
How do I add root permissions to my user account?
I want full permissions for all computers in my house, without having to get up and go to the other room and change permissions for the file, folder, drive, directory, computer, etc., then go back to the other room again.
I just created a partition, as THIS user, THIS machine, rebooted, and cannot create a folder on the partition I just created. UGH. No more of this stuff... I guess at the very least, I'll still have to log onto each machine for this?
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