Dirk
parent
06bd8b2517
commit
3891f5b13b
93
testssl.sh
93
testssl.sh
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@ -68,7 +68,7 @@ USLEEP_SND=${USLEEP_SND:-0.1} # sleep time for general socket send
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USLEEP_REC=${USLEEP_REC:-0.2} # sleep time for general socket receive
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CAPATH="${CAPATH:-/etc/ssl/certs/}" # Does nothing yet. FC has only a CA bundle per default, ==> openssl version -d
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HSTS_MIN=180 # >180 days is ok for HSTS
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HSTS_MIN=179 # >180 days is ok for HSTS
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HPKP_MIN=30 # >=30 days should be ok for HPKP_MIN, practical hints?
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CLIENT_MIN_PFS=5 # number of ciphers needed to run a test for PFS
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DAYS2WARN1=60 # days to warn before cert expires, threshold 1
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@ -168,7 +168,7 @@ SSLv2_CLIENT_HELLO="
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,00,1b # cipher spec length (here: 27 )
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,00,00 # session ID length
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,00,10 # challenge length
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,05,00,80 # 1st cipher 9 cipher specs, only classical V2 ciphers are used here, see http://max.euston.net/d/tip_sslciphers.html
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,05,00,80 # 1st cipher 9 cipher specs, only classical V2 ciphers are used here, see FIXME below
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,03,00,80 # 2nd there are v3 in v2!!! : https://tools.ietf.org/html/rfc6101#appendix-E
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,01,00,80 # 3rd Cipher specifications introduced in version 3.0 can be included in version 2.0 client hello messages using
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,07,00,c0 # 4th the syntax below. [..] # V2CipherSpec (see Version 3.0 name) = { 0x00, CipherSuite }; !!!!
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@ -178,6 +178,8 @@ SSLv2_CLIENT_HELLO="
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,02,00,80 # 8th
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,00,00,00 # 9th
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,29,22,be,b3,5a,01,8b,04,fe,5f,80,03,a0,13,eb,c4" # Challenge
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# https://idea.popcount.org/2012-06-16-dissecting-ssl-handshake/ (client)
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# FIXME: http://max.euston.net/d/tip_sslciphers.html
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###### output functions ######
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@ -294,6 +296,7 @@ red=""
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green=""
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brown=""
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blue=""
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cyan=""
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off=""
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bold=""
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underline=""
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@ -303,6 +306,7 @@ if [[ "$COLOR" -eq 2 ]]; then
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green=$(tput setaf 2)
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brown=$(tput setaf 3)
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blue=$(tput setaf 4)
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yellow=$(tput setaf 3; tput bold)
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off=$(tput sgr0)
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fi
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@ -555,7 +559,16 @@ hpkp() {
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emphasize_numbers_in_headers(){
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# see http://www.grymoire.com/Unix/Sed.html#uh-3
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# outln "$1" | sed "s/[0-9]*/$brown&$off/g"
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outln "$1" | sed "s/\([0-9]\)/$brown\1$off/g"
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outln "$1" | sed -e "s/\([0-9]\)/$brown\1$off/g" \
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-e "s/Debian/"$yellow"\Debian$off/g" \
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-e "s/Ubuntu/"$yellow"Ubuntu$off/g" \
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-e "s/ubuntu/"$yellow"ubuntu$off/g" \
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-e "s/squeeze/"$yellow"squeeze$off/g" \
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-e "s/lenny/"$yellow"lenny$off/g" \
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-e "s/SUSE/"$yellow"SUSE$off/g" \
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-e "s/Red Hat Enterprise Linux/"$yellow"Red Hat Enterprise Linux$off/g" \
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-e "s/Red Hat/"$yellow"Red Hat$off/g" \
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-e "s/CentOS/"$yellow"CentOS$off/g"
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}
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@ -1577,7 +1590,7 @@ len2twobytes() {
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}
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socksend_sslv2_clienthello() {
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code2network "$SSLv2_CLIENT_HELLO"
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code2network "$1"
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data=$(echo $NW_STR)
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[[ "$DEBUG" -ge 4 ]] && echo "\"$data\""
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printf -- "$data" >&5 2>/dev/null &
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@ -1611,22 +1624,31 @@ display_sslv2_serverhello() {
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# [certificate length] ==> certificate
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# [cipher spec length] ==> ciphers GOOD: HERE ARE ALL CIPHERS ALREADY!
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local ret=3
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v2_hello_ascii=$(hexdump -v -e '16/1 "%02X"' $1)
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[[ "$DEBUG" -ge 5 ]] && echo $v2_hello_ascii # one line without any blanks
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[[ "$DEBUG" -ge 5 ]] && echo $v2_hello_ascii
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if [[ -z $v2_hello_ascii ]] ; then
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ret=0 # no server hello received
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ret=0 # 1 line without any blanks: no server hello received
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debugme echo "server hello empty"
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else
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# now scrape two bytes out of the reply per byte
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v2_hello_initbyte="${v2_hello_ascii:0:1}" # normally this belongs to the next, should be 8!
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v2_hello_length="${v2_hello_ascii:1:3}" # + 0x8000 see above
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v2_hello_length="${v2_hello_ascii:1:3}" # + 0x8000 see above
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v2_hello_handshake="${v2_hello_ascii:4:2}"
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v2_hello_cert_length="${v2_hello_ascii:14:4}"
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v2_hello_cipherspec_length="${v2_hello_ascii:18:4}"
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V2_HELLO_CIPHERSPEC_LENGTH=$(printf "%d\n" "0x$v2_hello_cipherspec_length" 2>/dev/null)
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[ $? -ne 0 ] && ret=7
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if [[ $v2_hello_initbyte != "8" ]] || [[ $v2_hello_handshake != "04" ]]; then
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[[ $DEBUG -ge 2 ]] && echo "$v2_hello_initbyte / $v2_hello_handshake"
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ret=1
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if [[ $DEBUG -ge 2 ]]; then
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echo "no correct server hello"
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echo "SSLv2 server init byte: 0x0$v2_hello_initbyte"
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echo "SSLv2 hello handshake : 0x$v2_hello_handshake"
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fi
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fi
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if [[ $DEBUG -ge 3 ]]; then
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@ -1634,9 +1656,6 @@ display_sslv2_serverhello() {
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echo "SSLv2 certificate length: 0x$v2_hello_cert_length"
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echo "SSLv2 cipher spec length: 0x$v2_hello_cipherspec_length"
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fi
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V2_HELLO_CIPHERSPEC_LENGTH=$(printf "%d\n" "0x$v2_hello_cipherspec_length" 2>/dev/null)
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[ $? -ne 0 ] && ret=7
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fi
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return $ret
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}
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@ -1660,7 +1679,7 @@ display_tls_serverhello() {
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tls_hello_ascii=$(hexdump -v -e '16/1 "%02X"' $1)
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[[ "$DEBUG" -eq 5 ]] && echo $tls_hello_ascii # one line without any blanks
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[[ -z $tls_hello_ascii ]] && debugme echo "server hello empty" && return 0 # no server hello received
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[[ -z $tls_hello_ascii ]] && debugme echo "server hello empty, TCP connection closed" && return 0 # no server hello received
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# now scrape two bytes out of the reply per byte
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tls_hello_initbyte="${tls_hello_ascii:0:2}" # normally this is x16
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@ -1715,7 +1734,7 @@ sslv2_sockets() {
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fd_socket 5 || return 6
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[[ "$DEBUG" -ge 2 ]] && outln "sending client hello... "
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socksend_sslv2_clienthello
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socksend_sslv2_clienthello "$SSLv2_CLIENT_HELLO"
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sockread_serverhello 32768
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[[ "$DEBUG" -ge 2 ]] && outln "reading server hello... "
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@ -1725,29 +1744,31 @@ sslv2_sockets() {
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fi
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display_sslv2_serverhello "$SOCK_REPLY_FILE"
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if [ $? -eq 7 ]; then
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# strange reply
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pr_litemagenta "strange v2 reply "
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outln " (rerun with DEBUG=2)"
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[[ $DEBUG -ge 3 ]] && hexdump -C $SOCK_REPLY_FILE | head -1
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else
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# see https://secure.wand.net.nz/trac/libprotoident/wiki/SSL
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lines=$(hexdump -C "$SOCK_REPLY_FILE" 2>/dev/null | wc -l)
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[[ "$DEBUG" -ge 2 ]] && out " ($lines lines) "
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if [[ "$lines" -gt 1 ]] ;then
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ciphers_detected=$(($V2_HELLO_CIPHERSPEC_LENGTH / 3 ))
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if [ 0 -eq $ciphers_detected ] ; then
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pr_litered "supported but couldn't detect a cipher"; outln "(may need debugging)"
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else
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pr_red "offered (NOT ok)"; outln " -- $ciphers_detected ciphers"
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fi
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ret=1
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else
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case $? in
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7) # strange reply, cpundn't convert the cipher spec length to a hex number
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pr_litemagenta "strange v2 reply "
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outln " (rerun with DEBUG >=2)"
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[[ $DEBUG -ge 3 ]] && hexdump -C $SOCK_REPLY_FILE | head -1
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ret=7 ;;
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1) # no sslv2 server hello returned, like in openlitespeed which returns HTTP!
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pr_greenln "not offered (OK)"
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ret=0
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fi
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fi
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ret=0 ;;
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0) # reset
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pr_greenln "not offered (OK)"
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ret=0 ;;
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3) # everything else
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lines=$(hexdump -C "$SOCK_REPLY_FILE" 2>/dev/null | wc -l)
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[[ "$DEBUG" -ge 2 ]] && out " ($lines lines) "
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if [[ "$lines" -gt 1 ]] ;then
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ciphers_detected=$(($V2_HELLO_CIPHERSPEC_LENGTH / 3 ))
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if [ 0 -eq "$ciphers_detected" ] ; then
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pr_litered "supported but couldn't detect a cipher"; outln "(may need further attention)"
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else
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pr_red "offered (NOT ok)"; outln " -- $ciphers_detected ciphers"
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fi
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ret=1
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fi ;;
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esac
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pr_off
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debugme outln
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@ -3280,6 +3301,6 @@ fi
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exit $ret
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# $Id: testssl.sh,v 1.233 2015/04/22 09:56:12 dirkw Exp $
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# $Id: testssl.sh,v 1.234 2015/04/22 13:22:52 dirkw Exp $
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# vim:ts=5:sw=5
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# ^^^ FYI: use vim and you will see everything beautifully indented with a 5 char tab
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