Difference between revisions of "Sudo"
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↑ https://askubuntu.com/questions/192050/how-to-run-sudo-command-with-no-password
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== Examples == | == Examples == | ||
* Add user to sudo [[group]]: <code>sudo [[usermod]] '''-a'''G sudo YOUR_USERNAME</code> | * Add user to sudo [[group]]: <code>sudo [[usermod]] '''-a'''G sudo YOUR_USERNAME</code> | ||
| + | * <code>[[sudo -u postgres psql]]</code> | ||
== Task == | == Task == | ||
Revision as of 15:40, 2 February 2023
sudo (1980s) is a program for Unix-like computer operating systems that allows users to run programs with the security privileges of another user.
Examples
- Add user to sudo group:
sudo usermod -aG sudo YOUR_USERNAME sudo -u postgres psql
Task
- Allow user YOUR_USER_NAME to run sudo commands without typing the password:
Include in /etc/sudoers, using the visudo command, the following line at the end of the file:
YOUR_USER_NAME ALL=(ALL) NOPASSWD:ALL[1]
- Understand order rules are applied and impact: https://vim.fandom.com/wiki/Set_Vim_as_your_default_editor_for_Unix
- Use Ansible to modify file for passwordless sudo execution in Ubuntu
Security vulnerabilities
- CVE-2019-14287 https://nvd.nist.gov/vuln/detail/CVE-2019-14287, https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-14287. CVSS Base Score: 8.8
Exploitable if the following configuration is present:
username hostname = (ALL, !root) path-to-command
Errors
sudo: unable to resolve host
See: resolv.conf
[sudo] password for USERNAME: USERNAME is not in the sudoers file. This incident will be reported.
Options
Related terms
See also
sudo,id,visudo,useradd,userdel,usermod,groups,passwd,chown,chmod,chgrp,groupadd,groupdel, Passwordless sudo, passwd (package),sudo --help- journalctl, machinectl
sudo, doas, Polkit (pkexec)
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