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Can a sudo command give a user root access?
A user can trivially circumvent this by copying the desired command to a different name and then executing that. In general, if a user has sudo ALL there is nothing to prevent them from creating their own program that gives them a root shell (or making their own copy of a shell) regardless of any ‘!’ elements in the user specification.
Why do I need permission to run Sudo VI?
That’s the whole point of sudo: it lets the system administrator authorize certain users to run certain commands with extra privileges. Giving a user the permission to run vi gives them the permission to run any vi command, including :sh to run a shell and :w to overwrite any file on the system.
Is there a flaw in the sudo installer?
Qualys said the flaw impacts all Sudo installs using the sudoers file—which is the case for many Linux systems. Researchers have developed exploit variants for Debian 10 (Sudo 1.8.27), Ubuntu 20.04 (Sudo 1.8.31), and Fedora 33 (Sudo 1.9.2).
What happens if I run a sudo program?
Once sudo executes a program, that program is free to do whatever it pleases, including run other programs. This can be a security issue since it is not uncommon for a program to allow shell escapes, which lets a user bypass sudo’s access control and logging.
What to do if you are locked out of sysdmin?
To recreate the misconfiguration I removed all user logins from the sysadmin role and have no administrative access to the SQL instance. A frequently recommended fix to re-add logins to the sysadmin role is to start SQL in single user mode as described in the Microsoft article.
How does Sudo know the root password for MYPROG?
If so, sudo requests that the user enter their own password – not the root password. After ruser enters their own password, the program is run. sudo also logs the facts of the access to myprog with the date and time the program was run, the complete command, and the user who ran it. This data is logged in /var/log/security.
Why is MySQL not able to access root user?
When you install MySQL on your system, the root user may not be able to access it. Using the ALTER command, you can modify the root user and allow it access to MySQL.
Can a non-root user run VI as root?
The non-root user became root as soon as they successfully ran sudo (given the assumed root target user); they started running vi as root. When you ask vi for a shell, it dutifully runs a shell, as the current user — root!