Created
February 1, 2015 23:43
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Quick'n dirty script to test MS14-066
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#!/bin/bash | |
# | |
# @_hugsy_ | |
# | |
# Simple (harmless) to test if target is vulnerable to SChannel() memory corruption - MS14-066 | |
# | |
# It uses the fact that MS added 4 new cipher suites to the patch | |
# TLS_DHE_RSA_WITH_AES_256_GCM_SHA384 | |
# TLS_DHE_RSA_WITH_AES_128_GCM_SHA256 | |
# TLS_RSA_WITH_AES_256_GCM_SHA384 | |
# TLS_RSA_WITH_AES_128_GCM_SHA256 | |
# A system is *potentially* vulnerable if it doesn't support any of them. | |
# | |
# Refs: | |
# https://technet.microsoft.com/library/security/ms14-066 | |
# https://support.microsoft.com/kb/2992611 | |
# | |
# set -x | |
if [ $# -ne 1 ]; then | |
echo "Usage: $0 vhost:port" | |
echo "Example: $0 bing.com:443" | |
exit 1 | |
fi | |
host=$1 | |
n=0 | |
function is_iis() { | |
ret="`curl --silent --head https://${host} | egrep -i '^Server: Microsoft-IIS'`" | |
if [ x"${ret}" == x"" ]; then | |
echo "[-] Server is *not* IIS" | |
exit 1 | |
else | |
echo "[+] Server is IIS version: `echo ${ret} | cut -d ' ' -f 2`" | |
fi | |
} | |
function connect() { | |
cipher=$1 | |
req="`echo Q | openssl s_client -verify_return_error -cipher ${cipher} -connect ${host} 2>&1`" | |
# check if it's ssl first | |
test -n "$(echo $req | grep 'SSL23_GET_SERVER_HELLO:unknown protocol')" && exit 1 | |
# check for new cipher | |
test -n "$(echo $req | grep 'Cipher is (NONE)')" && n=$((n + 1)) | |
} | |
is_iis | |
for c in DHE-RSA-AES256-GCM-SHA384 DHE-RSA-AES128-GCM-SHA256 AES256-GCM-SHA384 AES128-GCM-SHA256; | |
do | |
connect $c | |
done | |
case $n in | |
4) echo "[+] ${host} is vulnerable";; | |
*) echo "[-] ${host} is not vulnerable";; | |
esac | |
exit 0 |
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