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Merge pull request #12 from tomato42/certificate-scanning-02

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Certificate scanning 02 (alternative version)
This commit is contained in:
Julien Vehent 2014-04-19 11:46:25 -04:00
commit f703ca9c26
2 changed files with 111 additions and 35 deletions
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56
README.md
View File

@ -44,38 +44,38 @@ Testing plain SSL/TLS:
``` ```
linux $ ./cipherscan www.google.com:443 linux $ ./cipherscan www.google.com:443
................... ...................
prio ciphersuite protocols pfs_keysize prio ciphersuite protocols pubkey_size signature_algorithm trusted pfs_keysize
1 ECDHE-RSA-CHACHA20-POLY1305 SSLv3,TLSv1,TLSv1.1,TLSv1.2 ECDH,P-256,256bits 1 ECDHE-RSA-CHACHA20-POLY1305 TLSv1.2 2048 sha1WithRSAEncryption True ECDH,P-256,256bits
2 ECDHE-RSA-AES128-GCM-SHA256 SSLv3,TLSv1,TLSv1.1,TLSv1.2 ECDH,P-256,256bits 2 ECDHE-RSA-AES128-GCM-SHA256 TLSv1.2 2048 sha1WithRSAEncryption True ECDH,P-256,256bits
3 ECDHE-RSA-RC4-SHA SSLv3,TLSv1,TLSv1.1,TLSv1.2 ECDH,P-256,256bits 3 ECDHE-RSA-AES128-SHA TLSv1.1,TLSv1.2 2048 sha1WithRSAEncryption True ECDH,P-256,256bits
4 ECDHE-RSA-AES128-SHA SSLv3,TLSv1,TLSv1.1,TLSv1.2 ECDH,P-256,256bits 4 ECDHE-RSA-RC4-SHA SSLv3,TLSv1,TLSv1.1,TLSv1.2 2048 sha1WithRSAEncryption True ECDH,P-256,256bits
5 AES128-GCM-SHA256 SSLv3,TLSv1,TLSv1.1,TLSv1.2 5 AES128-GCM-SHA256 TLSv1.2 2048 sha1WithRSAEncryption True
6 RC4-SHA SSLv3,TLSv1,TLSv1.1,TLSv1.2 6 AES128-SHA256 TLSv1.2 2048 sha1WithRSAEncryption True
7 RC4-MD5 SSLv3,TLSv1,TLSv1.1,TLSv1.2 7 AES128-SHA TLSv1.1,TLSv1.2 2048 sha1WithRSAEncryption True
8 ECDHE-RSA-AES256-GCM-SHA384 SSLv3,TLSv1,TLSv1.1,TLSv1.2 ECDH,P-256,256bits 8 RC4-SHA SSLv3,TLSv1,TLSv1.1,TLSv1.2 2048 sha1WithRSAEncryption True
9 ECDHE-RSA-AES256-SHA384 SSLv3,TLSv1,TLSv1.1,TLSv1.2 ECDH,P-256,256bits 9 RC4-MD5 SSLv3,TLSv1,TLSv1.1,TLSv1.2 2048 sha1WithRSAEncryption True
10 ECDHE-RSA-AES256-SHA SSLv3,TLSv1,TLSv1.1,TLSv1.2 ECDH,P-256,256bits 10 ECDHE-RSA-AES256-GCM-SHA384 TLSv1.2 2048 sha1WithRSAEncryption True ECDH,P-256,256bits
11 AES256-GCM-SHA384 SSLv3,TLSv1,TLSv1.1,TLSv1.2 11 ECDHE-RSA-AES256-SHA384 TLSv1.2 2048 sha1WithRSAEncryption True ECDH,P-256,256bits
12 AES256-SHA256 SSLv3,TLSv1,TLSv1.1,TLSv1.2 12 ECDHE-RSA-AES256-SHA SSLv3,TLSv1,TLSv1.1,TLSv1.2 2048 sha1WithRSAEncryption True ECDH,P-256,256bits
13 AES256-SHA SSLv3,TLSv1,TLSv1.1,TLSv1.2 13 AES256-GCM-SHA384 TLSv1.2 2048 sha1WithRSAEncryption True
14 ECDHE-RSA-DES-CBC3-SHA SSLv3,TLSv1,TLSv1.1,TLSv1.2 ECDH,P-256,256bits 14 AES256-SHA256 TLSv1.2 2048 sha1WithRSAEncryption True
15 DES-CBC3-SHA SSLv3,TLSv1,TLSv1.1,TLSv1.2 15 AES256-SHA SSLv3,TLSv1,TLSv1.1,TLSv1.2 2048 sha1WithRSAEncryption True
16 ECDHE-RSA-AES128-SHA256 SSLv3,TLSv1,TLSv1.1,TLSv1.2 ECDH,P-256,256bits 16 ECDHE-RSA-DES-CBC3-SHA SSLv3,TLSv1,TLSv1.1,TLSv1.2 2048 sha1WithRSAEncryption True ECDH,P-256,256bits
17 AES128-SHA256 SSLv3,TLSv1,TLSv1.1,TLSv1.2 17 DES-CBC3-SHA SSLv3,TLSv1,TLSv1.1,TLSv1.2 2048 sha1WithRSAEncryption True
18 AES128-SHA SSLv3,TLSv1,TLSv1.1,TLSv1.2 18 ECDHE-RSA-AES128-SHA256 TLSv1.2 2048 sha1WithRSAEncryption True ECDH,P-256,256bits
``` ```
Testing STARTTLS: Testing STARTTLS:
``` ```
darwin $ ./cipherscan -o ./openssl-mine -starttls xmpp jabber.ccc.de:5222 darwin $ ./cipherscan -o ./openssl-mine -starttls xmpp jabber.ccc.de:5222
......... .........
prio ciphersuite protocols pfs_keysize prio ciphersuite protocols pubkey_size signature_algorithm trusted pfs_keysize
1 DHE-RSA-AES256-SHA SSLv3,TLSv1 DH,1024bits 1 DHE-RSA-AES256-SHA SSLv3,TLSv1 2048 sha1WithRSAEncryption False DH,1024bits
2 AES256-SHA SSLv3,TLSv1 2 AES256-SHA SSLv3,TLSv1 2048 sha1WithRSAEncryption False
3 EDH-RSA-DES-CBC3-SHA SSLv3,TLSv1 DH,1024bits 3 EDH-RSA-DES-CBC3-SHA SSLv3,TLSv1 2048 sha1WithRSAEncryption False DH,1024bits
4 DES-CBC3-SHA SSLv3,TLSv1 4 DES-CBC3-SHA SSLv3,TLSv1 2048 sha1WithRSAEncryption False
5 DHE-RSA-AES128-SHA SSLv3,TLSv1 DH,1024bits 5 DHE-RSA-AES128-SHA SSLv3,TLSv1 2048 sha1WithRSAEncryption False DH,1024bits
6 AES128-SHA SSLv3,TLSv1 6 AES128-SHA SSLv3,TLSv1 2048 sha1WithRSAEncryption False
7 RC4-SHA SSLv3,TLSv1 7 RC4-SHA SSLv3,TLSv1 2048 sha1WithRSAEncryption False
8 RC4-MD5 SSLv3,TLSv1 8 RC4-MD5 SSLv3,TLSv1 2048 sha1WithRSAEncryption False
``` ```

90
cipherscan
View File

@ -8,6 +8,10 @@
DOBENCHMARK=0 DOBENCHMARK=0
BENCHMARKITER=30 BENCHMARKITER=30
OPENSSLBIN="$(dirname $0)/openssl" OPENSSLBIN="$(dirname $0)/openssl"
CACERTS=${CACERTS:-/etc/pki/tls/certs/ca-bundle.crt}
if [ ! -e "$CACERTS" ]; then
echo "Warning: CA Certificates not found at $CACERTS, export CACERTS variable with location of your trust anchors" 1>&2
fi
CIPHERSUITE="ALL:COMPLEMENTOFALL" CIPHERSUITE="ALL:COMPLEMENTOFALL"
DEBUG=0 DEBUG=0
VERBOSE=0 VERBOSE=0
@ -64,6 +68,7 @@ test_cipher_on_target() {
cipher="" cipher=""
protocols="" protocols=""
pfs="" pfs=""
previous_cipher=""
for tls_version in "-ssl2" "-ssl3" "-tls1" "-tls1_1" "-tls1_2" for tls_version in "-ssl2" "-ssl3" "-tls1" "-tls1_1" "-tls1_2"
do do
debug echo \"quit\\n\" \| $sslcommand $tls_version debug echo \"quit\\n\" \| $sslcommand $tls_version
@ -71,10 +76,32 @@ test_cipher_on_target() {
current_cipher=$(grep "New, " <<<"$tmp"|awk '{print $5}') current_cipher=$(grep "New, " <<<"$tmp"|awk '{print $5}')
current_pfs=$(grep 'Server Temp Key' <<<"$tmp"|awk '{print $4$5$6$7}') current_pfs=$(grep 'Server Temp Key' <<<"$tmp"|awk '{print $4$5$6$7}')
current_protocol=$(egrep "^\s+Protocol\s+:" <<<"$tmp"|awk '{print $3}') current_protocol=$(egrep "^\s+Protocol\s+:" <<<"$tmp"|awk '{print $3}')
current_pubkey=$(grep 'Server public key is ' <<<"$tmp"|awk '{print $5}')
if [ -z $current_pubkey ]; then
current_pubkey=0
fi
current_sigalg=$(openssl x509 -noout -text 2>/dev/null <<<"$tmp"|grep Signature\ Algorithm | head -n 1 | awk '{print $3}') || current_sigalg="None"
grep 'Verify return code: 0 ' <<<"$tmp" >/dev/null
if [ $? -eq 0 ]; then
current_trusted="True"
else
current_trusted="False"
fi
if [ -z $current_sigalg ]; then
current_sigalg=None
fi
if [[ -z "$current_protocol" || "$current_cipher" == '(NONE)' ]]; then if [[ -z "$current_protocol" || "$current_cipher" == '(NONE)' ]]; then
# connection failed, try again with next TLS version # connection failed, try again with next TLS version
continue continue
else
verbose "connection successful; protocol: $current_protocol, cipher: $current_cipher, previous cipher: $previous_cipher"
fi fi
# handling of TLSv1.2 only cipher suites
if [ ! -z "$previous_cipher" ] && [ "$previous_cipher" != "$current_cipher" ] && [ "$current_cipher" != "0000" ]; then
unset protocols
fi
previous_cipher=$current_cipher
# connection succeeded, add TLS version to positive results # connection succeeded, add TLS version to positive results
if [ -z "$protocols" ]; then if [ -z "$protocols" ]; then
protocols=$current_protocol protocols=$current_protocol
@ -83,6 +110,9 @@ test_cipher_on_target() {
fi fi
cipher=$current_cipher cipher=$current_cipher
pfs=$current_pfs pfs=$current_pfs
pubkey=$current_pubkey
sigalg=$current_sigalg
trusted=$current_trusted
# grab the cipher and PFS key size # grab the cipher and PFS key size
done done
# if cipher is empty, that means none of the TLS version worked with # if cipher is empty, that means none of the TLS version worked with
@ -94,13 +124,13 @@ test_cipher_on_target() {
# if cipher contains NONE, the cipher wasn't accepted # if cipher contains NONE, the cipher wasn't accepted
elif [ "$cipher" == '(NONE) ' ]; then elif [ "$cipher" == '(NONE) ' ]; then
result="$cipher $protocols $pfs" result="$cipher $protocols $pubkey $sigalg $trusted $pfs"
verbose "handshake failed, server returned ciphersuite '$result'" verbose "handshake failed, server returned ciphersuite '$result'"
return 1 return 1
# the connection succeeded # the connection succeeded
else else
result="$cipher $protocols $pfs" result="$cipher $protocols $pubkey $sigalg $trusted $pfs"
verbose "handshake succeeded, server returned ciphersuite '$result'" verbose "handshake succeeded, server returned ciphersuite '$result'"
return 0 return 0
fi fi
@ -133,7 +163,11 @@ bench_cipher() {
get_cipher_pref() { get_cipher_pref() {
[ "$OUTPUTFORMAT" == "terminal" ] && [ $DEBUG -lt 1 ] && echo -n '.' [ "$OUTPUTFORMAT" == "terminal" ] && [ $DEBUG -lt 1 ] && echo -n '.'
local ciphersuite="$1" local ciphersuite="$1"
local sslcommand="$OPENSSLBIN s_client $SCLIENTARGS -connect $TARGET -cipher $ciphersuite" if [ -e $CACERTS ]; then
local sslcommand="$OPENSSLBIN s_client -CAfile $CACERTS $SCLIENTARGS -connect $TARGET -cipher $ciphersuite"
else
local sslcommand="$OPENSSLBIN s_client $SCLIENTARGS -connect $TARGET -cipher $ciphersuite"
fi
verbose "Connecting to '$TARGET' with ciphersuite '$ciphersuite'" verbose "Connecting to '$TARGET' with ciphersuite '$ciphersuite'"
test_cipher_on_target "$sslcommand" test_cipher_on_target "$sslcommand"
local success=$? local success=$?
@ -151,6 +185,10 @@ get_cipher_pref() {
display_results_in_terminal() { display_results_in_terminal() {
# Display the results # Display the results
ctr=1 ctr=1
local pubkey
local sigalg
local trusted
local different=False
for cipher in "${cipherspref[@]}"; do for cipher in "${cipherspref[@]}"; do
pciph=$(echo $cipher|awk '{print $1}') pciph=$(echo $cipher|awk '{print $1}')
if [ $DOBENCHMARK -eq 1 ]; then if [ $DOBENCHMARK -eq 1 ]; then
@ -159,14 +197,37 @@ display_results_in_terminal() {
else else
r="$ctr $cipher" r="$ctr $cipher"
fi fi
if [ $ctr -eq 1 ]; then
pubkey=$(awk '{print $3}' <<<$cipher)
sigalg=$(awk '{print $4}' <<<$cipher)
trusted=$(awk '{print $5}' <<<$cipher)
else
if [ "$pubkey" != "$(awk '{print $3}' <<<$cipher)" ]; then
different=True
fi
if [ "$sigalg" != "$(awk '{print $4}' <<<$cipher)" ]; then
different=True
fi
if [ "$trusted" != "$(awk '{print $5}' <<<$cipher)" ]; then
different=True
fi
fi
results=("${results[@]}" "$r") results=("${results[@]}" "$r")
ctr=$((ctr+1)) ctr=$((ctr+1))
done done
if [ $DOBENCHMARK -eq 1 ]; then if [ $DOBENCHMARK -eq 1 ]; then
header="prio ciphersuite protocols pfs_keysize avg_handshake_microsec" if [ $different == "True" ]; then
header="prio ciphersuite protocols pubkey_size signature_algoritm trusted pfs_keysize avg_handshake_microsec"
else
header="prio ciphersuite protocols pfs_keysize avg_handshake_microsec"
fi
else else
header="prio ciphersuite protocols pfs_keysize" if [ $different == "True" ]; then
header="prio ciphersuite protocols pubkey_size signature_algorithm trusted pfs_keysize"
else
header="prio ciphersuite protocols pfs_keysize"
fi
fi fi
ctr=0 ctr=0
for result in "${results[@]}"; do for result in "${results[@]}"; do
@ -174,8 +235,20 @@ display_results_in_terminal() {
echo $header echo $header
ctr=$((ctr+1)) ctr=$((ctr+1))
fi fi
echo $result|grep -v '(NONE)' if [ $different == "True" ]; then
echo $result|grep -v '(NONE)'
else
echo $result|grep -v '(NONE)'|awk '{print $1 " " $2 " " $3 " " $7}'
fi
done|column -t done|column -t
echo
if [ $different != "True" ]; then
if [ "$trusted" == "True" ]; then
echo "Certificate: trusted, $pubkey bit, $sigalg signature"
else
echo "Certificate: UNTRUSTED, $pubkey bit, $sigalg signature"
fi
fi
} }
@ -187,7 +260,10 @@ display_results_in_json() {
[ $ctr -gt 0 ] && echo -n ',' [ $ctr -gt 0 ] && echo -n ','
echo -n "{\"cipher\":\"$(echo $cipher|awk '{print $1}')\"," echo -n "{\"cipher\":\"$(echo $cipher|awk '{print $1}')\","
echo -n "\"protocols\":[\"$(echo $cipher|awk '{print $2}'|sed 's/,/","/g')\"]," echo -n "\"protocols\":[\"$(echo $cipher|awk '{print $2}'|sed 's/,/","/g')\"],"
pfs=$(echo $cipher|awk '{print $3}') echo -n "\"pubkey\":[\"$(echo $cipher|awk '{print $3}'|sed 's/,/","/g')\"],"
echo -n "\"sigalg\":[\"$(echo $cipher|awk '{print $4}'|sed 's/,/","/g')\"],"
echo -n "\"trusted\":\"$(echo $cipher|awk '{print $5}'|sed 's/,/","/g')\","
pfs=$(echo $cipher|awk '{print $6}')
[ "$pfs" == "" ] && pfs="None" [ "$pfs" == "" ] && pfs="None"
echo -n "\"pfs\":\"$pfs\"}" echo -n "\"pfs\":\"$pfs\"}"
ctr=$((ctr+1)) ctr=$((ctr+1))