Fedora 32: 2021-234d14bfcc Critical: Sudo Race Condition and Link Attack

Sudo (superuser do) allows a system administrator to give certain

users (or groups of users) the ability to run some (or all) commands

as root while logging all commands and arguments. Sudo operates on a

per-command basis. It is not a replacement for the shell. Features

include: the ability to restrict what commands a user may run on a

per-host basis, copious logging of each command (providing a clear

audit trail of who did what), a configurable timeout of the sudo

command, and the ability to use the same configuration file (sudoers)

on many different machines.

Rebase to 1.9.5p1 - updated sudo url Resolves: rhbz#1902758 - enabled python

plugin as a subpackage Resolves: rhbz#1909299 - fixed double free in

sss_to_sudoers Resolves: rhbz#1885874 - fixed CVE-2021-23239 sudo: possible

directory existence test due to race condition in sudoedit Resolves:

rhbz#1915055 - fixed CVE-2021-23240 sudo: symbolic link attack in SELinux-enabled sudoedit Resolves: rhbz#1915054

* Mon Jan 18 2021 Radovan Sroka - 1.9.5p1-1

- rebase to 1.9.5p1

- updated sudo url

Resolves: rhbz#1902758

- enabled python plugin as a subpackage

Resolves: rhbz#1909299

- fixed double free in sss_to_sudoers

Resolves: rhbz#1885874

- fixed CVE-2021-23239 sudo: possible directory existence test due to race condition in sudoedit

Resolves: rhbz#1915055

- fixed CVE-2021-23240 sudo: symbolic link attack in SELinux-enabled sudoedit

Resolves: rhbz#1915054

[ 1 ] Bug #1915052 - CVE-2021-23239 sudo: possible directory existence test due to race condition in sudoedit

https://bugzilla.redhat.com/show_bug.cgi?id=1915052

[ 2 ] Bug #1915053 - CVE-2021-23240 sudo: symbolic link attack in SELinux-enabled sudoedit

https://bugzilla.redhat.com/show_bug.cgi?id=1915053

su -c 'dnf upgrade --advisory FEDORA-2021-234d14bfcc' at the command

line. For more information, refer to the dnf documentation available at

https://dnf.readthedocs.io/en/latest/command_ref.html

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