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After a research over the subject, as of Ansible 2.8 it doesn't seem you have a way to run commands as a different user using become without root permissions.. foo ALL=(root:root) NOPASSWD: /etc/init.d/reboot # Allow members of group sudo to execute any command %sudo ALL=(ALL:ALL) ALL foo is allowed to run 'reboot' as user root without password, but if foo is a member of sudo, that rule is 'overwritten' and will be prompted for password. user1 ALL=NOPASSWD: !ALL, /bin/bash If sudo is run by root and the SUDO_USER environment variable is set, the sudoers policy will use this value to determine who the actual user is. So this might be a better option, rather than running privileged containers (as root) ? Sudo Bug Allowed Linux Users To Run Commands As Superuser Root Sudo bug found in Linux: The Linux operating system is considered a secure operating system it’s good at handling flaws and vulnerabilities, but that does not mean that it is completely safe, … If it weren't setuid root, it won't be able to switch to root. Sudo command will accept given command and look to the sudoers file. This is a scripted install, so I would have to give sudo access to nobody with nopasswd to work seamlessly with trizen. I'm surprised that the root user is not allowed to use sudo - I've never seen that configuration. that's exactly how sudo works - /usr/bin/sudo is setuid root, so it automatically becomes root when you type sudo. Sudo to user other than root but do not allow sudo to root I need to allow my DBA's to su to oracle and one other account (banner) without knowing the oracle or banner password. You only have privilege to run individual commands as a root, using the sudo mechanism described above. All attempts to run sudo (successful or not) will be logged, regardless of whether or not mail is sent. sudo was designed to use that way and it makes many security checks before actually let you run the command. I have added both users to the sudoers file After the first 'failure' I did set a root password and can change to root. However, due to the bug, bob is actually able to run vi as root by running sudo-u#-1 vi, violating the security policy.” The CVE-2019-14287 vulnerability was discovered by Joe Vennix of Apple Information Security, it affects Sudo versions prior to 1.8.28. * the libvirt group is also root-equivalent. I had set user1 to execute only sudo bash command and forgotten about it. This allows users to determine for themselves whether or not they are allowed to use sudo. Yes, there is a root user account, separate from your user account created during system installation. If you get nothing as output, the user has sudo access. guest-user01: User not allowed to run sudo su. This incident will be reported. The 2nd and 3rd values when specified inside parentheses refer to a Runas_List In the case of my example the listed user (testuser) can run the command as any user and any group. We all know sudo has an elevated access, that can perform most of the root action. Using sudo Edit /etc/sudoers. Both come back saying is not allowed to run sudo on . Follow edited Dec 29 '20 at 14:17. So, root has all the privileges to run any command as any user or group. sudo is a program for Unix-like computer operating systems that … The default /etc/sudoers file contains two lines for group wheel; the NOPASSWD: line is commented out. The current check against not running as root (with sudo), is mostly for the config files. If sudo is run by root and the SUDO_USER environment variable is set, the sudoers policy will use this value to determine who the actual user is. Unit 3: User management and Kerberos authentication. As root, run visudo to edit /etc/sudoers and make the following changes. That’s because the password exemptions for dave only applies when he is executing scripts as annie, not as anyone else. The odd thing I see is that if I edit sudoers remove the users, add them back in, then I can sudo. User bob is allowed to run vi as any user but root. However, the user can do so with sudo command. In the above step, we have only removed the users from the "sudo" group. If the given user have right to run command with sudo the password will be asked. We can also find if an user has sudo access by running the following command: $ sudo -nv. User sys_BackupIntegratio is not allowed to run sudo on fmstabch02 I have added this user in /etc/sudoers file with user_id ALL=(aLL) NOPASSWD :aLL but when i am doing sudo su - … Thanks muru for suggesting the sudo -l command . I have upgraded to sid (from a several years old sid) and now sudo doesn't work (it used to work fine before the upgrade): Code: Select all % sudo command.sh [sudo] password for traknaj: traknaj is not allowed to run sudo on localhost. Provided it does, you should not try "sudo mintinstall" again, because graphical applications must not be run as root by prefixing "sudo". However, if we try to run the same command as user root, su will ask for the root‘s password. Many commands and system utilities need to be run as root to modify files and/or perform tasks that only the super user is allowed to. But I suggest you don't set random commands setuid root. Note that mail will not be sent if an unauthorized user tries to run sudo with the -l or -v option. But the user still exists in the system. The user can run commands with elevated privileges for a short time (default 15 minutes). For this two work, I need to run trizen as "nobody", but then it will attempt to access sudo. Take away sudo all and enumerate only the commands a user should be allowed to run as root, ... # SUDO_USER=whatever ./root.sh This script has to run as root (not sudo) # ./root.sh OK, script run as root (not sudo) Share. The advantage of using visudo is that it will validate the changes to the file.. Improve this answer. kamal and mon-team: only allowed to read /var/log/messages, no write access or delete access. Non-root user without sudo cannot install a program. Well, the user "senthil" is not allowed to run sudo. sudo: sorry, you must have a tty to run sudo. ALL means, the user can run all commands on all hosts, as all users and groups. However, by default in Ubuntu you are not allowed to login to interactive terminal as root user. But I need to prevent them from su'ing to any other user especially root. The sudo permission has been removed from the user. $ sudo -l -U senthil. Prerequisites:. root) /usr/bin/ vi. Do you mind sharing the output of: sudo sudo ls ? You wanted to run test.sh as USER2 with sudo, but instead you run su as root.. su may in turn try to run test.sh as USER2, but that's beyond the scope and knowledge of sudo.From sudo's point of view, the only thing you're doing is trying to run a command as root.. No, you are not a root. If you spend a lot of time on the command line, sudo is one of the commands that you will use quite frequently. Unit 4: Host-based access control (HBAC) Sudo is a program that allows users to run programs as another user with different privileges (possibly root).Sudo rules provide fine-grained control over who can execute which processes, as which users. In some cases, Development team need elevated access to perform some action as root ,what you will do is those situation ? ... For example, by default, a user is not allowed to install packages on an Ubuntu system. Why is Sudo A Better Alternative to Root (/) Using sudo is far safer for your system than going into root and attempting commands.
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