The script is in early stages of development but should work for some of the most common mis-configurtaions.master
Jonathan Hodgson
4 years ago
parent
cf37bd3dcf
commit
ab2c56d9b5
1 changed files with 365 additions and 0 deletions
@ -0,0 +1,365 @@ |
||||
#!/usr/bin/env bash |
||||
|
||||
set -o pipefail |
||||
|
||||
die(){ |
||||
echo "$@" >&2 |
||||
exit 1 |
||||
} |
||||
|
||||
#RED='\033[0;31m' |
||||
RED='\033[1;31m' |
||||
YELLOW='\033[1;33m' |
||||
GREEN='\033[1;32m' |
||||
LBLUE='\033[1;34m' |
||||
LCYAN='\033[1;36m' |
||||
ORANGE='\033[0;33m' |
||||
LGREY='\033[0;37m' |
||||
BOLDJ='\033[1;37m' |
||||
NC='\033[0m' # No Color |
||||
|
||||
stripAnsi(){ |
||||
sed -r "s/\x1B\[([0-9]{1,3}(;[0-9]{1,2})?)?[mGK]//g" |
||||
} |
||||
|
||||
trimWhitespace(){ |
||||
sed -e 's/^[[:space:]]*//' -e 's/[[:space:]]*$//' |
||||
} |
||||
|
||||
drawInBox(){ |
||||
innerWidth="45" |
||||
echo -en "${LBLUE}╭" |
||||
head -c $innerWidth /dev/zero | tr '\0' '-' |
||||
echo -e "╮${NC}" |
||||
while IFS= read -r line; do |
||||
# The ansi characters mess up the string length so we need to strip them to calculate the width |
||||
stripped="$(echo -n "$line" | stripAnsi)" |
||||
leftPad=$(( ( innerWidth - ${#stripped} ) / 2)) |
||||
rightPad=$(( ( innerWidth - leftPad ) - ${#stripped} )) |
||||
echo -en "${LBLUE}|${NC}" |
||||
head -c $leftPad /dev/zero | tr '\0' ' ' |
||||
echo -n "$line" |
||||
head -c $rightPad /dev/zero | tr '\0' ' ' |
||||
echo -e "${LBLUE}|${NC}" |
||||
done |
||||
echo -en "${LBLUE}╰" |
||||
head -c $innerWidth /dev/zero | tr '\0' '-' |
||||
echo -e "╯${NC}" |
||||
} |
||||
|
||||
# gets the colour that should be output |
||||
# 0 = green |
||||
# 1 = yellow |
||||
# 2 = red |
||||
getColour(){ |
||||
case "$1" in |
||||
0) echo -en "$GREEN" ;; |
||||
1) echo -en "$YELLOW" ;; |
||||
2) echo -en "$RED" ;; |
||||
esac |
||||
} |
||||
|
||||
printKey(){ |
||||
echo -e "Not checked\ |
||||
\t${GREEN}Fine${NC}\ |
||||
\t${YELLOW}Mis-configured${NC}\ |
||||
\t${RED}Missing${NC}" |
||||
} |
||||
|
||||
test_server(){ |
||||
local value="$(echo "$1" | cut -d ':' -f 2 | trimWhitespace)" |
||||
echo "Server" | drawInBox |
||||
echo -e "The server responds with ${ORANGE}$value${NC} in the Server header" |
||||
echo -e "This is potentially un-necesary information disclosure\n\n" |
||||
[ -n "$value" ] && return 1 || return 0 |
||||
} |
||||
|
||||
test_x-powered-by(){ |
||||
local value="$(echo "$1" | cut -d ':' -f 2 | trimWhitespace)" |
||||
echo "X-Powered-By" | drawInBox |
||||
echo -e "The server responds with ${ORANGE}$value${NC} in the X-Powered-By header" |
||||
echo -e "This is potentially un-necesary information disclosure\n\n" |
||||
[ -n "$value" ] && return 1 || return 0 |
||||
} |
||||
|
||||
test_x-aspnet-version(){ |
||||
local value="$(echo "$1" | cut -d ':' -f 2 | trimWhitespace)" |
||||
echo "X-Powered-By" | drawInBox |
||||
echo -e "The server responds with ${ORANGE}$value${NC} in the \ |
||||
X-AspNet-Version header" |
||||
echo -e "This is potentially un-necesary information disclosure\n\n" |
||||
[ -n "$value" ] && return 1 || return 0 |
||||
} |
||||
|
||||
test_x-xss-protection(){ |
||||
local value="$(echo "$1" | cut -d ':' -f 2 | grep -oE '[0-9]+' )" |
||||
if [ "$value" = "1" ]; then |
||||
return 0 |
||||
else |
||||
echo "X-XSS-Protection" | drawInBox |
||||
echo -e "The X-XSS-Protection header asks browsers to try and prevent \ |
||||
reflected cross site scripting attacks. It has been replaced in modern browsers \ |
||||
by the content-security-policy although should still be included for the sake \ |
||||
of old browsers\n\n" |
||||
return 1 |
||||
fi |
||||
} |
||||
|
||||
test_x-frame-options(){ |
||||
local value="$(echo "$1" | cut -d ':' -f 2 | trimWhitespace)" |
||||
case "$value" in |
||||
"SAMEORIGIN"|"DENY") return 0 ;; |
||||
"ALLOW-FROM"*) |
||||
echo "X-Frame-Opitons" | drawInBox |
||||
echo "The ALLOW-FROM derivative is obsolete and no longer works \ |
||||
in modern browsers." |
||||
echo "The Content-Security-Policy HTTP header has a \ |
||||
frame-ancestors directive which you can use instead." |
||||
return 1 |
||||
;; |
||||
*) |
||||
echo "X-Frame-Opitons" | drawInBox |
||||
echo "The X-Frame-Options HTTP response header can be used to \ |
||||
indicate whether or not a browser should be allowed to render a page in a \ |
||||
<frame>, <iframe>, <embed> or <object>. Sites can use this to avoid \ |
||||
click-jacking attacks, by ensuring that their content is not embedded into \ |
||||
other sites." |
||||
|
||||
source=" |
||||
<!DOCTYPE html> |
||||
<html> |
||||
<head> |
||||
<meta charset='UTF-8' /> |
||||
<meta name='viewport' content='width=device-width' /> |
||||
<title>Clickjacking example</title> |
||||
<style type='text/css' media='screen'> |
||||
body{ |
||||
width: 100vw; |
||||
height: 100vh; |
||||
border: 2px solid black; |
||||
} |
||||
iframe{ |
||||
border: 3px solid black; |
||||
width: 80%; |
||||
height: 80%; |
||||
margin: 20px auto; |
||||
display: block; |
||||
} |
||||
h1, p{ |
||||
text-align: center; |
||||
} |
||||
</style> |
||||
</head> |
||||
<body> |
||||
<h1>Clickjacking example</h1> |
||||
<iframe src='$url'> |
||||
</iframe> |
||||
<p>If content is rendered above, the site is vulnerable to clickjacking</p> |
||||
</body> |
||||
</html> |
||||
" |
||||
echo "To verify, type paste the following into your browser:" |
||||
echo -e "\ndata:text/html;base64,$(echo "$source" | base64 -w 0)\n\n" |
||||
|
||||
return 2 |
||||
esac |
||||
} |
||||
|
||||
#test_x-content-type-options(){ |
||||
#} |
||||
|
||||
test_content-security-policy(){ |
||||
local value="$(echo "$1" | cut -d ':' -f 2 | trimWhitespace)" |
||||
# TODO: work on content security testing |
||||
|
||||
if [ -z "$value" ]; then |
||||
echo "Content-Security-Policy" | drawInBox |
||||
echo -e "The HTTP Content-Security-Policy response header allows web site \ |
||||
administrators to control resources the user agent is allowed to load for a \ |
||||
given page. With a few exceptions, policies mostly involve specifying server \ |
||||
origins and script endpoints. This helps guard against cross-site scripting \ |
||||
attacks (XSS).\n\n" |
||||
return 2 |
||||
elif echo "$value" | grep -q 'unsafe-inline'; then |
||||
echo "Content-Security-Policy" | drawInBox |
||||
echo -e "The content security policy includes the \ |
||||
${ORANGE}unsafe-inline${NC} property which allows for inline JS/CSS assets. \ |
||||
This prevents the content security policy from effectively mitigating against |
||||
reflected or stored XSS attacks\n\n" |
||||
elif echo "$value" | grep -q 'unsafe-eval'; then |
||||
echo "Content-Security-Policy" | drawInBox |
||||
echo -e "The content security policy includes the \ |
||||
${ORANGE}unsafe-eval${NC} property which allows for eval to be used in JS. \ |
||||
This prevents the content security policy from effectively mitigating against |
||||
DOM based XSS attacks\n\n" |
||||
fi |
||||
return 0 |
||||
} |
||||
|
||||
test_strict-transport-security(){ |
||||
local value="$(echo "$1" | cut -d ':' -f 2 | trimWhitespace)" |
||||
local ret=0 |
||||
local output="" |
||||
local maxAge="$(echo "$value" | grep -oE 'max-age=[0-9]+' | |
||||
grep -oE '[0-9]+')" |
||||
|
||||
if [ "$maxAge" -lt "31536000" ]; then |
||||
output+="The max-age is set to a low value of ${ORANGE}$maxAge${NC}. |
||||
We suggest setting it to at least 31536000.\n\n" |
||||
ret=$((ret>1 ? ret : 1)) |
||||
fi |
||||
|
||||
if ! echo "$value" | grep -q 'includeSubDomains'; then |
||||
output+="The ${ORANGE}includeSubdomains${NC} property was not found. \ |
||||
When included browsers won't connect to subdomains unless over an encrypted \ |
||||
channel.\n\n" |
||||
ret=$((ret>1 ? ret : 1)) |
||||
fi |
||||
|
||||
#if ! echo "$value" | grep -q 'preload'; then |
||||
# output+="The preload property " |
||||
# ret=$((ret>1 ? ret : 1)) |
||||
#fi |
||||
|
||||
if [ "$ret" -gt 0 ]; then |
||||
echo "Strict-Transport-Security" | drawInBox |
||||
echo -e "$output" |
||||
fi |
||||
return $ret |
||||
} |
||||
|
||||
test_set-cookie(){ |
||||
local value="$(echo "$1" | cut -d ':' -f 2 | trimWhitespace)" |
||||
local cookieName="$(echo "$value" | cut -d '=' -f 1)" |
||||
local ret=0 |
||||
local output="" |
||||
|
||||
if ! echo "$value" | grep -q "HttpOnly"; then |
||||
output+="The HttpOnly flag isn't set which means the cookie value can \ |
||||
be read by JavaScript. If a malicious actor manages to run JavaScript through \ |
||||
methods like XSS, they may be able to steal the contents of cookies\n\n" |
||||
ret=$((ret>1 ? ret : 1)) |
||||
fi |
||||
|
||||
if ! echo "$value" | grep -q "Secure"; then |
||||
output+="The Secure flag isn't set which means the cookie could be \ |
||||
sent over unencrypted channels\n\n" |
||||
ret=$((ret>1 ? ret : 1)) |
||||
fi |
||||
|
||||
if [ "$ret" -gt 0 ]; then |
||||
echo "Set-Cookie: $cookieName" | drawInBox |
||||
echo -e "$output" |
||||
fi |
||||
|
||||
return "$ret" |
||||
} |
||||
|
||||
|
||||
usage(){ |
||||
echo -n "analyse-headers [OPTIONS]... URL |
||||
|
||||
Analyse the headers of a website |
||||
|
||||
Options: |
||||
-h, --help Display this help and exit |
||||
" |
||||
} |
||||
|
||||
|
||||
# Iterate over options breaking -ab into -a -b when needed and --foo=bar into |
||||
# --foo bar |
||||
optstring=h |
||||
unset options |
||||
while (($#)); do |
||||
case $1 in |
||||
# If option is of type -ab |
||||
-[!-]?*) |
||||
# Loop over each character starting with the second |
||||
for ((i=1; i < ${#1}; i++)); do |
||||
c=${1:i:1} |
||||
|
||||
# Add current char to options |
||||
options+=("-$c") |
||||
|
||||
# If option takes a required argument, and it's not the last char make |
||||
# the rest of the string its argument |
||||
if [[ $optstring = *"$c:"* && ${1:i+1} ]]; then |
||||
options+=("${1:i+1}") |
||||
break |
||||
fi |
||||
done |
||||
;; |
||||
|
||||
# If option is of type --foo=bar |
||||
--?*=*) options+=("${1%%=*}" "${1#*=}") ;; |
||||
# add --endopts for -- |
||||
--) options+=(--endopts) ;; |
||||
# Otherwise, nothing special |
||||
*) options+=("$1") ;; |
||||
esac |
||||
shift |
||||
done |
||||
set -- "${options[@]}" |
||||
unset options |
||||
|
||||
followRedirect="false" |
||||
|
||||
# Read the options and set stuff |
||||
while [[ $1 = -?* ]]; do |
||||
case $1 in |
||||
-h|--help) usage; exit;; |
||||
--) shift; break ;; |
||||
*) die "invalid option: '$1'." ;; |
||||
esac |
||||
shift |
||||
done |
||||
|
||||
# Store the remaining part as arguments. |
||||
args+=("$@") |
||||
|
||||
url="${args[0]}" |
||||
[ -z "$url" ] && die "You need to specify a url" |
||||
|
||||
headers="$(curl -s -I "$url")" |
||||
missingHeaders="x-frame-options |
||||
content-security-policy |
||||
x-xss-protection |
||||
x-content-type-options" |
||||
|
||||
tmpfile="$(mktemp)" |
||||
touch "$tmpfile" |
||||
|
||||
printKey |
||||
|
||||
echo "" |
||||
|
||||
echo "$headers" | sed -n '1p' |
||||
|
||||
while read line; do |
||||
headerKey="$(echo "$line" | cut -d ':' -f1)" |
||||
lowercase="$(echo "$headerKey" | tr '[A-Z]' '[a-z]')" |
||||
missingHeaders="$(echo -n "$missingHeaders" | sed '/'"$lowercase"'/d')" |
||||
functionName="test_$lowercase" |
||||
if declare -f "$functionName" > /dev/null; then |
||||
"$functionName" "$line" >> "$tmpfile" |
||||
colour="$(getColour "$?")" |
||||
echo -e "${colour}$line${NC}" |
||||
else |
||||
echo "$line" |
||||
fi |
||||
done<<<$(echo "$headers" | sed '1d') # We don't want the initial http banner |
||||
|
||||
echo "$missingHeaders" | while read line; do |
||||
echo -e "${RED}$line${NC}" |
||||
functionName="test_$line" |
||||
"$functionName" >> "$tmpfile" |
||||
done |
||||
|
||||
|
||||
cat "$tmpfile" |
||||
rm "$tmpfile" |
||||
|
||||
|
||||
|
||||
|
||||
Loading…
Reference in new issue