Git/ssh-audit
1
0
Fork 0
mirror of https://github.com/jtesta/ssh-audit.git synced 2024-11-25 12:01:40 +01:00
Code Issues Packages Projects Releases Wiki Activity

Finish implementing compatibility feature.

Browse Source 
Fix wrong algorithm warning.
Stop on empty packet.
This commit is contained in:
Andris Raugulis 2016-08-12 04:28:46 +03:00
parent 6df21a9891
commit 744aec76fb
1 changed files with 126 additions and 89 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

211
ssh-audit.py
View File

@ -202,6 +202,9 @@ class SSH(object):
if self.unread_len < self.__block_size: if self.unread_len < self.__block_size:
self.recv() self.recv()
header = self.read(self.__block_size) header = self.read(self.__block_size)
if len(header) == 0:
out.fail('[exception] empty ssh packet (no data)')
sys.exit(1)
packet_size = struct.unpack('>I', header[:4])[0] packet_size = struct.unpack('>I', header[:4])[0]
rest = header[4:] rest = header[4:]
lrest = len(rest) lrest = len(rest)
@ -289,21 +292,40 @@ def get_ssh_version(version_desc):
else: else:
return ('OpenSSH', version_desc) return ('OpenSSH', version_desc)
def get_alg_since_text(versions): def get_alg_since_text(alg_desc):
tv = [] tv = []
for v in versions.split(','): versions = alg_desc[0]
for v in versions[0].split(','):
ssh_prefix, ssh_version = get_ssh_version(v) ssh_prefix, ssh_version = get_ssh_version(v)
tv.append('{0} {1}'.format(ssh_prefix, ssh_version)) tv.append('{0} {1}'.format(ssh_prefix, ssh_version))
return 'available since ' + ', '.join(tv).rstrip(', ') return 'available since ' + ', '.join(tv).rstrip(', ')
def get_alg_timeframe(alg_desc, result = {}): def get_alg_timeframe(alg_desc, result = {}):
vsince = alg_desc[0] versions = alg_desc[0]
for v in vsince.split(','): vlen = len(versions)
for i in range(3):
if i > vlen - 1:
if i == 2 and vlen > 1:
cversions = versions[1]
else:
continue
else:
cversions = versions[i]
if cversions is None:
continue
for v in cversions.split(','):
ssh_prefix, ssh_version = get_ssh_version(v) ssh_prefix, ssh_version = get_ssh_version(v)
if not ssh_prefix in result: if not ssh_prefix in result:
result[ssh_prefix] = [None, None] result[ssh_prefix] = [None, None, None]
if result[ssh_prefix][0] is None or result[ssh_prefix][0] < ssh_version: prev, push = result[ssh_prefix][i], False
result[ssh_prefix][0] = ssh_version if prev is None:
push = True
elif i == 0 and prev < ssh_version:
push = True
elif i > 0 and prev > ssh_version:
push = True
if push:
result[ssh_prefix][i] = ssh_version
return result return result
def get_ssh_timeframe(kex): def get_ssh_timeframe(kex):
@ -345,88 +367,88 @@ TEXT_TAG_SIZE = 'using small 64-bit tag size'
KEX_DB = { KEX_DB = {
'kex': { 'kex': {
'diffie-hellman-group1-sha1': ['2.3.0,d0.28', [FAIL_OPENSSH67_UNSAFE, FAIL_OPENSSH70_LOGJAM], [TEXT_MODULUS_SIZE, TEXT_HASH_WEAK]], 'diffie-hellman-group1-sha1': [['2.3.0,d0.28', '6.6', '6.9'], [FAIL_OPENSSH67_UNSAFE, FAIL_OPENSSH70_LOGJAM], [TEXT_MODULUS_SIZE, TEXT_HASH_WEAK]],
'diffie-hellman-group14-sha1': ['3.9,d0.53', [], [TEXT_HASH_WEAK]], 'diffie-hellman-group14-sha1': [['3.9,d0.53'], [], [TEXT_HASH_WEAK]],
'diffie-hellman-group14-sha256': ['7.3,d0216.73', [], []], 'diffie-hellman-group14-sha256': [['7.3,d0216.73']],
'diffie-hellman-group16-sha512': ['7.3,d2016.73', [], []], 'diffie-hellman-group16-sha512': [['7.3,d2016.73']],
'diffie-hellman-group18-sha512': ['7.3', [], []], 'diffie-hellman-group18-sha512': [['7.3']],
'diffie-hellman-group-exchange-sha1': ['2.3.0', [FAIL_OPENSSH67_UNSAFE], [TEXT_HASH_WEAK]], 'diffie-hellman-group-exchange-sha1': [['2.3.0', '6.6', None], [FAIL_OPENSSH67_UNSAFE], [TEXT_HASH_WEAK]],
'diffie-hellman-group-exchange-sha256': ['4.4', [], [TEXT_MODULUS_CUSTOM]], 'diffie-hellman-group-exchange-sha256': [['4.4'], [], [TEXT_MODULUS_CUSTOM]],
'ecdh-sha2-nistp256': ['5.7,d2013.62', [TEXT_CURVES_WEAK]], 'ecdh-sha2-nistp256': [['5.7,d2013.62'], [TEXT_CURVES_WEAK]],
'ecdh-sha2-nistp384': ['5.7,d2013.62', [TEXT_CURVES_WEAK]], 'ecdh-sha2-nistp384': [['5.7,d2013.62'], [TEXT_CURVES_WEAK]],
'ecdh-sha2-nistp521': ['5.7,d2013.62', [TEXT_CURVES_WEAK]], 'ecdh-sha2-nistp521': [['5.7,d2013.62'], [TEXT_CURVES_WEAK]],
'curve25519-sha256@libssh.org': ['6.5,d2013.62'], 'curve25519-sha256@libssh.org': [['6.5,d2013.62']],
'kexguess2@matt.ucc.asn.au': ['d2013.57'], 'kexguess2@matt.ucc.asn.au': [['d2013.57']],
}, },
'key': { 'key': {
'rsa-sha2-256': ['7.2'], 'rsa-sha2-256': [['7.2']],
'rsa-sha2-512': ['7.2'], 'rsa-sha2-512': [['7.2']],
'ssh-ed25519': ['6.5'], 'ssh-ed25519': [['6.5']],
'ssh-ed25519-cert-v01@openssh.com': ['6.5'], 'ssh-ed25519-cert-v01@openssh.com': [['6.5']],
'ssh-rsa': ['2.5.0,d0.28'], 'ssh-rsa': [['2.5.0,d0.28']],
'ssh-dss': ['2.1.0,d0.28', [FAIL_OPENSSH70_WEAK], [TEXT_MODULUS_SIZE, TEXT_RNDSIG_KEY]], 'ssh-dss': [['2.1.0,d0.28', '6.9'], [FAIL_OPENSSH70_WEAK], [TEXT_MODULUS_SIZE, TEXT_RNDSIG_KEY]],
'ecdsa-sha2-nistp256': ['5.7,d2013.62', [TEXT_CURVES_WEAK], [TEXT_RNDSIG_KEY]], 'ecdsa-sha2-nistp256': [['5.7,d2013.62'], [TEXT_CURVES_WEAK], [TEXT_RNDSIG_KEY]],
'ecdsa-sha2-nistp384': ['5.7,d2013.62', [TEXT_CURVES_WEAK], [TEXT_RNDSIG_KEY]], 'ecdsa-sha2-nistp384': [['5.7,d2013.62'], [TEXT_CURVES_WEAK], [TEXT_RNDSIG_KEY]],
'ecdsa-sha2-nistp521': ['5.7,d2013.62', [TEXT_CURVES_WEAK], [TEXT_RNDSIG_KEY]], 'ecdsa-sha2-nistp521': [['5.7,d2013.62'], [TEXT_CURVES_WEAK], [TEXT_RNDSIG_KEY]],
'ssh-rsa-cert-v00@openssh.com': ['5.4', [FAIL_OPENSSH70_LEGACY], []], 'ssh-rsa-cert-v00@openssh.com': [['5.4', '6.9'], [FAIL_OPENSSH70_LEGACY], []],
'ssh-dss-cert-v00@openssh.com': ['5.4', [FAIL_OPENSSH70_LEGACY], [TEXT_MODULUS_SIZE, TEXT_RNDSIG_KEY]], 'ssh-dss-cert-v00@openssh.com': [['5.4', '6.9'], [FAIL_OPENSSH70_LEGACY], [TEXT_MODULUS_SIZE, TEXT_RNDSIG_KEY]],
'ssh-rsa-cert-v01@openssh.com': ['5.6'], 'ssh-rsa-cert-v01@openssh.com': [['5.6']],
'ssh-dss-cert-v01@openssh.com': ['5.6', [FAIL_OPENSSH70_WEAK], [TEXT_MODULUS_SIZE, TEXT_RNDSIG_KEY]], 'ssh-dss-cert-v01@openssh.com': [['5.6', '6.9'], [FAIL_OPENSSH70_WEAK], [TEXT_MODULUS_SIZE, TEXT_RNDSIG_KEY]],
'ecdsa-sha2-nistp256-cert-v01@openssh.com': ['5.7', [TEXT_CURVES_WEAK], [TEXT_RNDSIG_KEY]], 'ecdsa-sha2-nistp256-cert-v01@openssh.com': [['5.7'], [TEXT_CURVES_WEAK], [TEXT_RNDSIG_KEY]],
'ecdsa-sha2-nistp384-cert-v01@openssh.com': ['5.7', [TEXT_CURVES_WEAK], [TEXT_RNDSIG_KEY]], 'ecdsa-sha2-nistp384-cert-v01@openssh.com': [['5.7'], [TEXT_CURVES_WEAK], [TEXT_RNDSIG_KEY]],
'ecdsa-sha2-nistp521-cert-v01@openssh.com': ['5.7', [TEXT_CURVES_WEAK], [TEXT_RNDSIG_KEY]], 'ecdsa-sha2-nistp521-cert-v01@openssh.com': [['5.7'], [TEXT_CURVES_WEAK], [TEXT_RNDSIG_KEY]],
}, },
'enc': { 'enc': {
'none': ['1.2.2,d2013.56', [FAIL_PLAINTEXT]], 'none': [['1.2.2,d2013.56'], [FAIL_PLAINTEXT]],
'3des-cbc': ['1.2.2,d0.28', [FAIL_OPENSSH67_UNSAFE], [TEXT_CIPHER_WEAK, TEXT_CIPHER_MODE, TEXT_BLOCK_SIZE]], '3des-cbc': [['1.2.2,d0.28', '6.6', None], [FAIL_OPENSSH67_UNSAFE], [TEXT_CIPHER_WEAK, TEXT_CIPHER_MODE, TEXT_BLOCK_SIZE]],
'3des-ctr': ['d0.52'], '3des-ctr': [['d0.52']],
'blowfish-cbc': ['1.2.2,d0.28', [FAIL_OPENSSH67_UNSAFE, FAIL_DBEAR53_DISABLED], [WARN_OPENSSH72_LEGACY, TEXT_CIPHER_MODE, TEXT_BLOCK_SIZE]], 'blowfish-cbc': [['1.2.2,d0.28', '6.6,d0.52', '7.1,d0.52'], [FAIL_OPENSSH67_UNSAFE, FAIL_DBEAR53_DISABLED], [WARN_OPENSSH72_LEGACY, TEXT_CIPHER_MODE, TEXT_BLOCK_SIZE]],
'twofish-cbc': ['d0.28', [FAIL_DBEAR67_DISABLED], [TEXT_CIPHER_MODE]], 'twofish-cbc': [['d0.28', 'd2014.66'], [FAIL_DBEAR67_DISABLED], [TEXT_CIPHER_MODE]],
'twofish128-cbc': ['d0.47', [FAIL_DBEAR67_DISABLED], [TEXT_CIPHER_MODE]], 'twofish128-cbc': [['d0.47', 'd2014.66'], [FAIL_DBEAR67_DISABLED], [TEXT_CIPHER_MODE]],
'twofish256-cbc': ['d0.47', [FAIL_DBEAR67_DISABLED], [TEXT_CIPHER_MODE]], 'twofish256-cbc': [['d0.47', 'd2014.66'], [FAIL_DBEAR67_DISABLED], [TEXT_CIPHER_MODE]],
'twofish128-ctr': ['d2015.68'], 'twofish128-ctr': [['d2015.68']],
'twofish256-ctr': ['d2015.68'], 'twofish256-ctr': [['d2015.68']],
'cast128-cbc': ['2.1.0', [FAIL_OPENSSH67_UNSAFE], [WARN_OPENSSH72_LEGACY, TEXT_CIPHER_MODE, TEXT_BLOCK_SIZE]], 'cast128-cbc': [['2.1.0', '6.6', '7.1'], [FAIL_OPENSSH67_UNSAFE], [WARN_OPENSSH72_LEGACY, TEXT_CIPHER_MODE, TEXT_BLOCK_SIZE]],
'arcfour': ['2.1.0', [FAIL_OPENSSH67_UNSAFE], [WARN_OPENSSH72_LEGACY, TEXT_CIPHER_WEAK]], 'arcfour': [['2.1.0', '6.6', '7.1'], [FAIL_OPENSSH67_UNSAFE], [WARN_OPENSSH72_LEGACY, TEXT_CIPHER_WEAK]],
'arcfour128': ['4.2', [FAIL_OPENSSH67_UNSAFE], [WARN_OPENSSH72_LEGACY, TEXT_CIPHER_WEAK]], 'arcfour128': [['4.2', '6.6', '7.1'], [FAIL_OPENSSH67_UNSAFE], [WARN_OPENSSH72_LEGACY, TEXT_CIPHER_WEAK]],
'arcfour256': ['4.2', [FAIL_OPENSSH67_UNSAFE], [WARN_OPENSSH72_LEGACY, TEXT_CIPHER_WEAK]], 'arcfour256': [['4.2', '6.6', '7.1'], [FAIL_OPENSSH67_UNSAFE], [WARN_OPENSSH72_LEGACY, TEXT_CIPHER_WEAK]],
'aes128-cbc': ['2.3.0,d0.28', [FAIL_OPENSSH67_UNSAFE], [TEXT_CIPHER_MODE]], 'aes128-cbc': [['2.3.0,d0.28', '6.6', None], [FAIL_OPENSSH67_UNSAFE], [TEXT_CIPHER_MODE]],
'aes192-cbc': ['2.3.0', [FAIL_OPENSSH67_UNSAFE], [TEXT_CIPHER_MODE]], 'aes192-cbc': [['2.3.0', '6.6', None], [FAIL_OPENSSH67_UNSAFE], [TEXT_CIPHER_MODE]],
'aes256-cbc': ['2.3.0,d0.47', [FAIL_OPENSSH67_UNSAFE], [TEXT_CIPHER_MODE]], 'aes256-cbc': [['2.3.0,d0.47', '6.6', None], [FAIL_OPENSSH67_UNSAFE], [TEXT_CIPHER_MODE]],
'rijndael128-cbc': ['2.3.0', [FAIL_OPENSSH31_REMOVE], [TEXT_CIPHER_MODE]], 'rijndael128-cbc': [['2.3.0', '3.0.2'], [FAIL_OPENSSH31_REMOVE], [TEXT_CIPHER_MODE]],
'rijndael192-cbc': ['2.3.0', [FAIL_OPENSSH31_REMOVE], [TEXT_CIPHER_MODE]], 'rijndael192-cbc': [['2.3.0', '3.0.2'], [FAIL_OPENSSH31_REMOVE], [TEXT_CIPHER_MODE]],
'rijndael256-cbc': ['2.3.0', [FAIL_OPENSSH31_REMOVE], [TEXT_CIPHER_MODE]], 'rijndael256-cbc': [['2.3.0', '3.0.2'], [FAIL_OPENSSH31_REMOVE], [TEXT_CIPHER_MODE]],
'rijndael-cbc@lysator.liu.se': ['2.3.0', [FAIL_OPENSSH67_UNSAFE], [WARN_OPENSSH72_LEGACY, TEXT_CIPHER_MODE]], 'rijndael-cbc@lysator.liu.se': [['2.3.0', '6.6', '7.1'], [FAIL_OPENSSH67_UNSAFE], [WARN_OPENSSH72_LEGACY, TEXT_CIPHER_MODE]],
'aes128-ctr': ['3.7,d0.52'], 'aes128-ctr': [['3.7,d0.52']],
'aes192-ctr': ['3.7'], 'aes192-ctr': [['3.7']],
'aes256-ctr': ['3.7,d0.52'], 'aes256-ctr': [['3.7,d0.52']],
'aes128-gcm@openssh.com': ['6.2'], 'aes128-gcm@openssh.com': [['6.2']],
'aes256-gcm@openssh.com': ['6.2'], 'aes256-gcm@openssh.com': [['6.2']],
'chacha20-poly1305@openssh.com': ['6.5', [], [], [INFO_OPENSSH69_CHACHA]], 'chacha20-poly1305@openssh.com': [['6.5'], [], [], [INFO_OPENSSH69_CHACHA]],
}, },
'mac': { 'mac': {
'none': ['d2013.56', [FAIL_PLAINTEXT]], 'none': [['d2013.56'], [FAIL_PLAINTEXT]],
'hmac-sha1': ['2.1.0,d0.28', [], [TEXT_ENCRYPT_AND_MAC, TEXT_HASH_WEAK]], 'hmac-sha1': [['2.1.0,d0.28'], [], [TEXT_ENCRYPT_AND_MAC, TEXT_HASH_WEAK]],
'hmac-sha1-96': ['2.5.0,d0.47', [FAIL_OPENSSH67_UNSAFE], [WARN_OPENSSH72_LEGACY, TEXT_ENCRYPT_AND_MAC, TEXT_HASH_WEAK]], 'hmac-sha1-96': [['2.5.0,d0.47', '6.6', '7.1'], [FAIL_OPENSSH67_UNSAFE], [WARN_OPENSSH72_LEGACY, TEXT_ENCRYPT_AND_MAC, TEXT_HASH_WEAK]],
'hmac-sha2-256': ['5.9,d2013.56', [], [TEXT_ENCRYPT_AND_MAC]], 'hmac-sha2-256': [['5.9,d2013.56'], [], [TEXT_ENCRYPT_AND_MAC]],
'hmac-sha2-256-96': ['5.9', [FAIL_OPENSSH61_REMOVE], [TEXT_ENCRYPT_AND_MAC]], 'hmac-sha2-256-96': [['5.9', '6.0'], [FAIL_OPENSSH61_REMOVE], [TEXT_ENCRYPT_AND_MAC]],
'hmac-sha2-512': ['5.9,d2013.56', [], [TEXT_ENCRYPT_AND_MAC]], 'hmac-sha2-512': [['5.9,d2013.56'], [], [TEXT_ENCRYPT_AND_MAC]],
'hmac-sha2-512-96': ['5.9', [FAIL_OPENSSH61_REMOVE], [TEXT_ENCRYPT_AND_MAC]], 'hmac-sha2-512-96': [['5.9', '6.0'], [FAIL_OPENSSH61_REMOVE], [TEXT_ENCRYPT_AND_MAC]],
'hmac-md5': ['2.1.0,d0.28', [FAIL_OPENSSH67_UNSAFE], [WARN_OPENSSH72_LEGACY, TEXT_ENCRYPT_AND_MAC, TEXT_HASH_WEAK]], 'hmac-md5': [['2.1.0,d0.28', '6.6', '7.1'], [FAIL_OPENSSH67_UNSAFE], [WARN_OPENSSH72_LEGACY, TEXT_ENCRYPT_AND_MAC, TEXT_HASH_WEAK]],
'hmac-md5-96': ['2.5.0', [FAIL_OPENSSH67_UNSAFE], [WARN_OPENSSH72_LEGACY, TEXT_ENCRYPT_AND_MAC, TEXT_HASH_WEAK]], 'hmac-md5-96': [['2.5.0', '6.6', '7.1'], [FAIL_OPENSSH67_UNSAFE], [WARN_OPENSSH72_LEGACY, TEXT_ENCRYPT_AND_MAC, TEXT_HASH_WEAK]],
'hmac-ripemd160': ['2.5.0', [FAIL_OPENSSH67_UNSAFE], [WARN_OPENSSH72_LEGACY, TEXT_ENCRYPT_AND_MAC]], 'hmac-ripemd160': [['2.5.0', '6.6', '7.1'], [FAIL_OPENSSH67_UNSAFE], [WARN_OPENSSH72_LEGACY, TEXT_ENCRYPT_AND_MAC]],
'hmac-ripemd160@openssh.com': ['2.1.0', [FAIL_OPENSSH67_UNSAFE], [WARN_OPENSSH72_LEGACY, TEXT_ENCRYPT_AND_MAC]], 'hmac-ripemd160@openssh.com': [['2.1.0', '6.6', '7.1'], [FAIL_OPENSSH67_UNSAFE], [WARN_OPENSSH72_LEGACY, TEXT_ENCRYPT_AND_MAC]],
'umac-64@openssh.com': ['4.7', [], [TEXT_ENCRYPT_AND_MAC, TEXT_TAG_SIZE]], 'umac-64@openssh.com': [['4.7'], [], [TEXT_ENCRYPT_AND_MAC, TEXT_TAG_SIZE]],
'umac-128@openssh.com': ['6.2', [], [TEXT_ENCRYPT_AND_MAC]], 'umac-128@openssh.com': [['6.2'], [], [TEXT_ENCRYPT_AND_MAC]],
'hmac-sha1-etm@openssh.com': ['6.2', [], [WARN_OPENSSH72_LEGACY, TEXT_HASH_WEAK]], 'hmac-sha1-etm@openssh.com': [['6.2'], [], [TEXT_HASH_WEAK]],
'hmac-sha1-96-etm@openssh.com': ['6.2', [FAIL_OPENSSH67_UNSAFE], [TEXT_HASH_WEAK]], 'hmac-sha1-96-etm@openssh.com': [['6.2', '6.6', None], [FAIL_OPENSSH67_UNSAFE], [TEXT_HASH_WEAK]],
'hmac-sha2-256-etm@openssh.com': ['6.2'], 'hmac-sha2-256-etm@openssh.com': [['6.2']],
'hmac-sha2-512-etm@openssh.com': ['6.2'], 'hmac-sha2-512-etm@openssh.com': [['6.2']],
'hmac-md5-etm@openssh.com': ['6.2', [FAIL_OPENSSH67_UNSAFE], [WARN_OPENSSH72_LEGACY, TEXT_HASH_WEAK]], 'hmac-md5-etm@openssh.com': [['6.2', '6.6', '7.1'], [FAIL_OPENSSH67_UNSAFE], [WARN_OPENSSH72_LEGACY, TEXT_HASH_WEAK]],
'hmac-md5-96-etm@openssh.com': ['6.2', [FAIL_OPENSSH67_UNSAFE], [WARN_OPENSSH72_LEGACY, TEXT_HASH_WEAK]], 'hmac-md5-96-etm@openssh.com': [['6.2', '6.6', '7.1'], [FAIL_OPENSSH67_UNSAFE], [WARN_OPENSSH72_LEGACY, TEXT_HASH_WEAK]],
'hmac-ripemd160-etm@openssh.com': ['6.2', [FAIL_OPENSSH67_UNSAFE], [WARN_OPENSSH72_LEGACY]], 'hmac-ripemd160-etm@openssh.com': [['6.2', '6.6', '7.1'], [FAIL_OPENSSH67_UNSAFE], [WARN_OPENSSH72_LEGACY]],
'umac-64-etm@openssh.com': ['6.2', [], [TEXT_TAG_SIZE]], 'umac-64-etm@openssh.com': [['6.2'], [], [TEXT_TAG_SIZE]],
'umac-128-etm@openssh.com': ['6.2'], 'umac-128-etm@openssh.com': [['6.2']],
} }
} }
@ -445,7 +467,7 @@ def output_algorithm(alg_type, alg_name, alg_max_len=0):
ldesc = len(alg_desc) ldesc = len(alg_desc)
for idx, level in enumerate(['fail', 'warn', 'info']): for idx, level in enumerate(['fail', 'warn', 'info']):
if level == 'info': if level == 'info':
texts.append((level, get_alg_since_text(alg_desc[0]))) texts.append((level, get_alg_since_text(alg_desc)))
idx = idx + 1 idx = idx + 1
if ldesc > idx: if ldesc > idx:
for t in alg_desc[idx]: for t in alg_desc[idx]:
@ -469,6 +491,23 @@ def output_algorithm(alg_type, alg_name, alg_max_len=0):
else: else:
f(' ' * len(prefix + alg_name) + padding + ' `- ' + text) f(' ' * len(prefix + alg_name) + padding + ' `- ' + text)
def output_compatibility(kex, client=False):
ssh_timeframe = get_ssh_timeframe(kex)
cp = 2 if client else 1
comp_text = []
for sshd_name, v in ssh_timeframe.items():
if v[cp] is None:
comp_text.append('{} {}+'.format(sshd_name, v[0]))
elif v[0] == v[1]:
comp_text.append('{} {}'.format(sshd_name, v[0]))
else:
if v[1] < v[0]:
comp_text.append('{} {}+ (some functionality from {})'.format(sshd_name, v[0], v[1]))
else:
comp_text.append('{} {}-{}'.format(sshd_name, v[0], v[1]))
if len(comp_text) > 0:
out.good('[info] compatibility: ' + ', '.join(comp_text))
def output(banner, kex): def output(banner, kex):
out.head('# general') out.head('# general')
out.good('[info] banner: ' + banner) out.good('[info] banner: ' + banner)
@ -476,9 +515,7 @@ def output(banner, kex):
out.fail('[fail] protocol SSH1 enabled') out.fail('[fail] protocol SSH1 enabled')
if kex is None: if kex is None:
return return
alg_timeframe = get_ssh_timeframe(kex) output_compatibility(kex)
guess_text = ', '.join('{} {}'.format(k, ' - '.join([v[0] or '...', v[1] or '...'])) for k, v in alg_timeframe.items())
out.good('[info] compatibility: ' + guess_text)
compressions = [x for x in kex.server.compression if x != 'none'] compressions = [x for x in kex.server.compression if x != 'none']
if len(compressions) > 0: if len(compressions) > 0:
cmptxt = 'enabled ({0})'.format(', '.join(compressions)) cmptxt = 'enabled ({0})'.format(', '.join(compressions))