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Merge pull request #12 from tomato42/certificate-scanning-02
Certificate scanning 02 (alternative version)
This commit is contained in:
Julien Vehent
commit
f703ca9c26
56
README.md
56
README.md
@ -44,38 +44,38 @@ Testing plain SSL/TLS:
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```
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linux $ ./cipherscan www.google.com:443
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...................
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prio ciphersuite protocols pfs_keysize
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1 ECDHE-RSA-CHACHA20-POLY1305 SSLv3,TLSv1,TLSv1.1,TLSv1.2 ECDH,P-256,256bits
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2 ECDHE-RSA-AES128-GCM-SHA256 SSLv3,TLSv1,TLSv1.1,TLSv1.2 ECDH,P-256,256bits
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3 ECDHE-RSA-RC4-SHA SSLv3,TLSv1,TLSv1.1,TLSv1.2 ECDH,P-256,256bits
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4 ECDHE-RSA-AES128-SHA SSLv3,TLSv1,TLSv1.1,TLSv1.2 ECDH,P-256,256bits
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5 AES128-GCM-SHA256 SSLv3,TLSv1,TLSv1.1,TLSv1.2
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6 RC4-SHA SSLv3,TLSv1,TLSv1.1,TLSv1.2
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7 RC4-MD5 SSLv3,TLSv1,TLSv1.1,TLSv1.2
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8 ECDHE-RSA-AES256-GCM-SHA384 SSLv3,TLSv1,TLSv1.1,TLSv1.2 ECDH,P-256,256bits
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9 ECDHE-RSA-AES256-SHA384 SSLv3,TLSv1,TLSv1.1,TLSv1.2 ECDH,P-256,256bits
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10 ECDHE-RSA-AES256-SHA SSLv3,TLSv1,TLSv1.1,TLSv1.2 ECDH,P-256,256bits
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11 AES256-GCM-SHA384 SSLv3,TLSv1,TLSv1.1,TLSv1.2
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12 AES256-SHA256 SSLv3,TLSv1,TLSv1.1,TLSv1.2
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13 AES256-SHA SSLv3,TLSv1,TLSv1.1,TLSv1.2
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14 ECDHE-RSA-DES-CBC3-SHA SSLv3,TLSv1,TLSv1.1,TLSv1.2 ECDH,P-256,256bits
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15 DES-CBC3-SHA SSLv3,TLSv1,TLSv1.1,TLSv1.2
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16 ECDHE-RSA-AES128-SHA256 SSLv3,TLSv1,TLSv1.1,TLSv1.2 ECDH,P-256,256bits
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17 AES128-SHA256 SSLv3,TLSv1,TLSv1.1,TLSv1.2
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18 AES128-SHA SSLv3,TLSv1,TLSv1.1,TLSv1.2
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prio ciphersuite protocols pubkey_size signature_algorithm trusted pfs_keysize
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1 ECDHE-RSA-CHACHA20-POLY1305 TLSv1.2 2048 sha1WithRSAEncryption True ECDH,P-256,256bits
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2 ECDHE-RSA-AES128-GCM-SHA256 TLSv1.2 2048 sha1WithRSAEncryption True ECDH,P-256,256bits
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3 ECDHE-RSA-AES128-SHA TLSv1.1,TLSv1.2 2048 sha1WithRSAEncryption True ECDH,P-256,256bits
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4 ECDHE-RSA-RC4-SHA SSLv3,TLSv1,TLSv1.1,TLSv1.2 2048 sha1WithRSAEncryption True ECDH,P-256,256bits
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5 AES128-GCM-SHA256 TLSv1.2 2048 sha1WithRSAEncryption True
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6 AES128-SHA256 TLSv1.2 2048 sha1WithRSAEncryption True
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7 AES128-SHA TLSv1.1,TLSv1.2 2048 sha1WithRSAEncryption True
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8 RC4-SHA SSLv3,TLSv1,TLSv1.1,TLSv1.2 2048 sha1WithRSAEncryption True
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9 RC4-MD5 SSLv3,TLSv1,TLSv1.1,TLSv1.2 2048 sha1WithRSAEncryption True
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10 ECDHE-RSA-AES256-GCM-SHA384 TLSv1.2 2048 sha1WithRSAEncryption True ECDH,P-256,256bits
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11 ECDHE-RSA-AES256-SHA384 TLSv1.2 2048 sha1WithRSAEncryption True ECDH,P-256,256bits
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12 ECDHE-RSA-AES256-SHA SSLv3,TLSv1,TLSv1.1,TLSv1.2 2048 sha1WithRSAEncryption True ECDH,P-256,256bits
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13 AES256-GCM-SHA384 TLSv1.2 2048 sha1WithRSAEncryption True
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14 AES256-SHA256 TLSv1.2 2048 sha1WithRSAEncryption True
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15 AES256-SHA SSLv3,TLSv1,TLSv1.1,TLSv1.2 2048 sha1WithRSAEncryption True
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16 ECDHE-RSA-DES-CBC3-SHA SSLv3,TLSv1,TLSv1.1,TLSv1.2 2048 sha1WithRSAEncryption True ECDH,P-256,256bits
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17 DES-CBC3-SHA SSLv3,TLSv1,TLSv1.1,TLSv1.2 2048 sha1WithRSAEncryption True
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18 ECDHE-RSA-AES128-SHA256 TLSv1.2 2048 sha1WithRSAEncryption True ECDH,P-256,256bits
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```
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Testing STARTTLS:
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```
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darwin $ ./cipherscan -o ./openssl-mine -starttls xmpp jabber.ccc.de:5222
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.........
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prio ciphersuite protocols pfs_keysize
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1 DHE-RSA-AES256-SHA SSLv3,TLSv1 DH,1024bits
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2 AES256-SHA SSLv3,TLSv1
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3 EDH-RSA-DES-CBC3-SHA SSLv3,TLSv1 DH,1024bits
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4 DES-CBC3-SHA SSLv3,TLSv1
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5 DHE-RSA-AES128-SHA SSLv3,TLSv1 DH,1024bits
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6 AES128-SHA SSLv3,TLSv1
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7 RC4-SHA SSLv3,TLSv1
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8 RC4-MD5 SSLv3,TLSv1
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prio ciphersuite protocols pubkey_size signature_algorithm trusted pfs_keysize
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1 DHE-RSA-AES256-SHA SSLv3,TLSv1 2048 sha1WithRSAEncryption False DH,1024bits
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2 AES256-SHA SSLv3,TLSv1 2048 sha1WithRSAEncryption False
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3 EDH-RSA-DES-CBC3-SHA SSLv3,TLSv1 2048 sha1WithRSAEncryption False DH,1024bits
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4 DES-CBC3-SHA SSLv3,TLSv1 2048 sha1WithRSAEncryption False
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5 DHE-RSA-AES128-SHA SSLv3,TLSv1 2048 sha1WithRSAEncryption False DH,1024bits
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6 AES128-SHA SSLv3,TLSv1 2048 sha1WithRSAEncryption False
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7 RC4-SHA SSLv3,TLSv1 2048 sha1WithRSAEncryption False
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8 RC4-MD5 SSLv3,TLSv1 2048 sha1WithRSAEncryption False
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```
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90
cipherscan
90
cipherscan
@ -8,6 +8,10 @@
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DOBENCHMARK=0
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BENCHMARKITER=30
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OPENSSLBIN="$(dirname $0)/openssl"
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CACERTS=${CACERTS:-/etc/pki/tls/certs/ca-bundle.crt}
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if [ ! -e "$CACERTS" ]; then
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echo "Warning: CA Certificates not found at $CACERTS, export CACERTS variable with location of your trust anchors" 1>&2
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fi
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CIPHERSUITE="ALL:COMPLEMENTOFALL"
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DEBUG=0
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VERBOSE=0
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@ -64,6 +68,7 @@ test_cipher_on_target() {
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cipher=""
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protocols=""
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pfs=""
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previous_cipher=""
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for tls_version in "-ssl2" "-ssl3" "-tls1" "-tls1_1" "-tls1_2"
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do
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debug echo \"quit\\n\" \| $sslcommand $tls_version
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@ -71,10 +76,32 @@ test_cipher_on_target() {
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current_cipher=$(grep "New, " <<<"$tmp"|awk '{print $5}')
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current_pfs=$(grep 'Server Temp Key' <<<"$tmp"|awk '{print $4$5$6$7}')
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current_protocol=$(egrep "^\s+Protocol\s+:" <<<"$tmp"|awk '{print $3}')
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current_pubkey=$(grep 'Server public key is ' <<<"$tmp"|awk '{print $5}')
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if [ -z $current_pubkey ]; then
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current_pubkey=0
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fi
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current_sigalg=$(openssl x509 -noout -text 2>/dev/null <<<"$tmp"|grep Signature\ Algorithm | head -n 1 | awk '{print $3}') || current_sigalg="None"
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grep 'Verify return code: 0 ' <<<"$tmp" >/dev/null
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if [ $? -eq 0 ]; then
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current_trusted="True"
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else
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current_trusted="False"
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fi
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if [ -z $current_sigalg ]; then
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current_sigalg=None
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fi
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if [[ -z "$current_protocol" || "$current_cipher" == '(NONE)' ]]; then
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# connection failed, try again with next TLS version
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continue
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else
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verbose "connection successful; protocol: $current_protocol, cipher: $current_cipher, previous cipher: $previous_cipher"
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fi
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# handling of TLSv1.2 only cipher suites
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if [ ! -z "$previous_cipher" ] && [ "$previous_cipher" != "$current_cipher" ] && [ "$current_cipher" != "0000" ]; then
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unset protocols
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fi
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previous_cipher=$current_cipher
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# connection succeeded, add TLS version to positive results
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if [ -z "$protocols" ]; then
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protocols=$current_protocol
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@ -83,6 +110,9 @@ test_cipher_on_target() {
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fi
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cipher=$current_cipher
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pfs=$current_pfs
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pubkey=$current_pubkey
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sigalg=$current_sigalg
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trusted=$current_trusted
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# grab the cipher and PFS key size
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done
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# if cipher is empty, that means none of the TLS version worked with
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@ -94,13 +124,13 @@ test_cipher_on_target() {
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# if cipher contains NONE, the cipher wasn't accepted
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elif [ "$cipher" == '(NONE) ' ]; then
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result="$cipher $protocols $pfs"
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result="$cipher $protocols $pubkey $sigalg $trusted $pfs"
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verbose "handshake failed, server returned ciphersuite '$result'"
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return 1
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# the connection succeeded
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else
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result="$cipher $protocols $pfs"
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result="$cipher $protocols $pubkey $sigalg $trusted $pfs"
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verbose "handshake succeeded, server returned ciphersuite '$result'"
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return 0
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fi
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@ -133,7 +163,11 @@ bench_cipher() {
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get_cipher_pref() {
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[ "$OUTPUTFORMAT" == "terminal" ] && [ $DEBUG -lt 1 ] && echo -n '.'
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local ciphersuite="$1"
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local sslcommand="$OPENSSLBIN s_client $SCLIENTARGS -connect $TARGET -cipher $ciphersuite"
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if [ -e $CACERTS ]; then
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local sslcommand="$OPENSSLBIN s_client -CAfile $CACERTS $SCLIENTARGS -connect $TARGET -cipher $ciphersuite"
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else
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local sslcommand="$OPENSSLBIN s_client $SCLIENTARGS -connect $TARGET -cipher $ciphersuite"
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fi
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verbose "Connecting to '$TARGET' with ciphersuite '$ciphersuite'"
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test_cipher_on_target "$sslcommand"
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local success=$?
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@ -151,6 +185,10 @@ get_cipher_pref() {
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display_results_in_terminal() {
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# Display the results
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ctr=1
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local pubkey
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local sigalg
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local trusted
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local different=False
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for cipher in "${cipherspref[@]}"; do
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pciph=$(echo $cipher|awk '{print $1}')
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if [ $DOBENCHMARK -eq 1 ]; then
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@ -159,14 +197,37 @@ display_results_in_terminal() {
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else
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r="$ctr $cipher"
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fi
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if [ $ctr -eq 1 ]; then
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pubkey=$(awk '{print $3}' <<<$cipher)
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sigalg=$(awk '{print $4}' <<<$cipher)
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trusted=$(awk '{print $5}' <<<$cipher)
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else
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if [ "$pubkey" != "$(awk '{print $3}' <<<$cipher)" ]; then
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different=True
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fi
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if [ "$sigalg" != "$(awk '{print $4}' <<<$cipher)" ]; then
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different=True
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fi
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if [ "$trusted" != "$(awk '{print $5}' <<<$cipher)" ]; then
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different=True
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fi
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fi
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results=("${results[@]}" "$r")
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ctr=$((ctr+1))
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done
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if [ $DOBENCHMARK -eq 1 ]; then
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header="prio ciphersuite protocols pfs_keysize avg_handshake_microsec"
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if [ $different == "True" ]; then
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header="prio ciphersuite protocols pubkey_size signature_algoritm trusted pfs_keysize avg_handshake_microsec"
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else
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header="prio ciphersuite protocols pfs_keysize avg_handshake_microsec"
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fi
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else
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header="prio ciphersuite protocols pfs_keysize"
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if [ $different == "True" ]; then
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header="prio ciphersuite protocols pubkey_size signature_algorithm trusted pfs_keysize"
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else
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header="prio ciphersuite protocols pfs_keysize"
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fi
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fi
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ctr=0
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for result in "${results[@]}"; do
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@ -174,8 +235,20 @@ display_results_in_terminal() {
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echo $header
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ctr=$((ctr+1))
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fi
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echo $result|grep -v '(NONE)'
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if [ $different == "True" ]; then
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echo $result|grep -v '(NONE)'
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else
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echo $result|grep -v '(NONE)'|awk '{print $1 " " $2 " " $3 " " $7}'
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fi
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done|column -t
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echo
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if [ $different != "True" ]; then
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if [ "$trusted" == "True" ]; then
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echo "Certificate: trusted, $pubkey bit, $sigalg signature"
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else
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echo "Certificate: UNTRUSTED, $pubkey bit, $sigalg signature"
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fi
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fi
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}
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@ -187,7 +260,10 @@ display_results_in_json() {
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[ $ctr -gt 0 ] && echo -n ','
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echo -n "{\"cipher\":\"$(echo $cipher|awk '{print $1}')\","
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echo -n "\"protocols\":[\"$(echo $cipher|awk '{print $2}'|sed 's/,/","/g')\"],"
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pfs=$(echo $cipher|awk '{print $3}')
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echo -n "\"pubkey\":[\"$(echo $cipher|awk '{print $3}'|sed 's/,/","/g')\"],"
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echo -n "\"sigalg\":[\"$(echo $cipher|awk '{print $4}'|sed 's/,/","/g')\"],"
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echo -n "\"trusted\":\"$(echo $cipher|awk '{print $5}'|sed 's/,/","/g')\","
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pfs=$(echo $cipher|awk '{print $6}')
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[ "$pfs" == "" ] && pfs="None"
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echo -n "\"pfs\":\"$pfs\"}"
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ctr=$((ctr+1))
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