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Add warnings for encryption and MAC.

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Add none cipher and MAC.
This commit is contained in:
Andris Raugulis 2016-01-05 18:02:05 +02:00
parent ca9baf80b8
commit 6f70e328b2
1 changed files with 43 additions and 35 deletions
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78
ssh-audit.py
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@ -151,12 +151,18 @@ FAIL_OPENSSH61_REMOVE = 'removed since OpenSSH 6.1, removed from specification'
FAIL_OPENSSH31_REMOVE = 'removed since OpenSSH 3.1'
FAIL_DBEAR67_DISABLED = 'disabled since Dropbear SSH 2015.67'
FAIL_DBEAR53_DISABLED = 'disabled since Dropbear SSH 0.53'
FAIL_PLAINTEXT = 'no encryption/integrity'
TEXT_CURVES_WEAK = 'using weak elliptic curves'
TEXT_RNDSIG_KEY = 'using weak random number generator could reveal the key'
TEXT_MODULUS_SIZE = 'using modulus with small (1024) bit size'
TEXT_MODULUS_CUSTOM = 'using modulus with custom (possibly weak) bit sizes'
TEXT_MODULUS_SIZE = 'using small 1024-bit modulus'
TEXT_MODULUS_CUSTOM = 'using custom size modulus (possibly weak)'
TEXT_HASH_WEAK = 'using weak hashing algorithm'
TEXT_CIPHER_MODE = 'using weak cipher mode'
TEXT_BLOCK_SIZE = 'using small 64-bit block size'
TEXT_CIPHER_WEAK = 'using weak cipher'
TEXT_ENCRYPT_AND_MAC = 'using encrypt-and-MAC mode'
TEXT_TAG_SIZE = 'using small 64-bit tag size'
KEX_DB = {
'kex': {
@ -187,25 +193,26 @@ KEX_DB = {
'ecdsa-sha2-nistp521-cert-v01@openssh.com': ['5.7', [TEXT_CURVES_WEAK], [TEXT_RNDSIG_KEY]],
},
'enc': {
'3des-cbc': ['1.2.2,d0.28', [FAIL_OPENSSH67_UNSAFE]],
'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-ctr': ['d0.52'],
'blowfish-cbc': ['1.2.2,d0.28', [FAIL_OPENSSH67_UNSAFE, FAIL_DBEAR53_DISABLED], [WARN_OPENSSH72_LEGACY]],
'twofish-cbc': ['d0.28', [FAIL_DBEAR67_DISABLED]],
'twofish128-cbc': ['d0.47', [FAIL_DBEAR67_DISABLED]],
'twofish256-cbc': ['d0.47', [FAIL_DBEAR67_DISABLED]],
'blowfish-cbc': ['1.2.2,d0.28', [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]],
'twofish128-cbc': ['d0.47', [FAIL_DBEAR67_DISABLED], [TEXT_CIPHER_MODE]],
'twofish256-cbc': ['d0.47', [FAIL_DBEAR67_DISABLED], [TEXT_CIPHER_MODE]],
'twofish128-ctr': ['d2015.68'],
'twofish256-ctr': ['d2015.68'],
'cast128-cbc': ['2.1.0', [FAIL_OPENSSH67_UNSAFE], [WARN_OPENSSH72_LEGACY]],
'arcfour': ['2.1.0', [FAIL_OPENSSH67_UNSAFE], [WARN_OPENSSH72_LEGACY]],
'arcfour128': ['4.2', [FAIL_OPENSSH67_UNSAFE], [WARN_OPENSSH72_LEGACY]],
'arcfour256': ['4.2', [FAIL_OPENSSH67_UNSAFE], [WARN_OPENSSH72_LEGACY]],
'aes128-cbc': ['2.3.0,d0.28', [FAIL_OPENSSH67_UNSAFE]],
'aes192-cbc': ['2.3.0', [FAIL_OPENSSH67_UNSAFE]],
'aes256-cbc': ['2.3.0,d0.47', [FAIL_OPENSSH67_UNSAFE]],
'rijndael128-cbc': ['2.3.0', [FAIL_OPENSSH31_REMOVE]],
'rijndael192-cbc': ['2.3.0', [FAIL_OPENSSH31_REMOVE]],
'rijndael256-cbc': ['2.3.0', [FAIL_OPENSSH31_REMOVE]],
'rijndael-cbc@lysator.liu.se': ['2.3.0', [], [WARN_OPENSSH72_LEGACY]],
'cast128-cbc': ['2.1.0', [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]],
'arcfour128': ['4.2', [FAIL_OPENSSH67_UNSAFE], [WARN_OPENSSH72_LEGACY, TEXT_CIPHER_WEAK]],
'arcfour256': ['4.2', [FAIL_OPENSSH67_UNSAFE], [WARN_OPENSSH72_LEGACY, TEXT_CIPHER_WEAK]],
'aes128-cbc': ['2.3.0,d0.28', [FAIL_OPENSSH67_UNSAFE], [TEXT_CIPHER_MODE]],
'aes192-cbc': ['2.3.0', [FAIL_OPENSSH67_UNSAFE], [TEXT_CIPHER_MODE]],
'aes256-cbc': ['2.3.0,d0.47', [FAIL_OPENSSH67_UNSAFE], [TEXT_CIPHER_MODE]],
'rijndael128-cbc': ['2.3.0', [FAIL_OPENSSH31_REMOVE], [TEXT_CIPHER_MODE]],
'rijndael192-cbc': ['2.3.0', [FAIL_OPENSSH31_REMOVE], [TEXT_CIPHER_MODE]],
'rijndael256-cbc': ['2.3.0', [FAIL_OPENSSH31_REMOVE], [TEXT_CIPHER_MODE]],
'rijndael-cbc@lysator.liu.se': ['2.3.0', [], [WARN_OPENSSH72_LEGACY, TEXT_CIPHER_MODE]],
'aes128-ctr': ['3.7,d0.52'],
'aes192-ctr': ['3.7'],
'aes256-ctr': ['3.7,d0.52'],
@ -214,26 +221,27 @@ KEX_DB = {
'chacha20-poly1305@openssh.com': ['6.5', [], [], [INFO_OPENSSH69_CHACHA]],
},
'mac': {
'hmac-sha1': ['2.1.0,d0.28'],
'hmac-sha1-96': ['2.5.0,d0.47', [FAIL_OPENSSH67_UNSAFE]],
'hmac-sha2-256': ['5.9,d2013.56'],
'hmac-sha2-256-96': ['5.9', [FAIL_OPENSSH61_REMOVE]],
'hmac-sha2-512': ['5.9,d2013.56'],
'hmac-sha2-512-96': ['5.9', [FAIL_OPENSSH61_REMOVE]],
'hmac-md5': ['2.1.0,d0.28', [FAIL_OPENSSH67_UNSAFE], [WARN_OPENSSH72_LEGACY]],
'hmac-md5-96': ['2.5.0', [FAIL_OPENSSH67_UNSAFE], [WARN_OPENSSH72_LEGACY]],
'hmac-ripemd160': ['2.5.0', [FAIL_OPENSSH67_UNSAFE]],
'hmac-ripemd160@openssh.com': ['2.1.0', [FAIL_OPENSSH67_UNSAFE]],
'umac-64@openssh.com': ['4.7'],
'umac-128@openssh.com': ['6.2'],
'hmac-sha1-etm@openssh.com': ['6.2'],
'hmac-sha1-96-etm@openssh.com': ['6.2', [FAIL_OPENSSH67_UNSAFE]],
'none': ['d2013.56', [FAIL_PLAINTEXT]],
'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], [TEXT_ENCRYPT_AND_MAC, TEXT_HASH_WEAK]],
'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-sha2-512': ['5.9,d2013.56', [], [TEXT_ENCRYPT_AND_MAC]],
'hmac-sha2-512-96': ['5.9', [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-md5-96': ['2.5.0', [FAIL_OPENSSH67_UNSAFE], [WARN_OPENSSH72_LEGACY, TEXT_ENCRYPT_AND_MAC, TEXT_HASH_WEAK]],
'hmac-ripemd160': ['2.5.0', [FAIL_OPENSSH67_UNSAFE], [TEXT_ENCRYPT_AND_MAC]],
'hmac-ripemd160@openssh.com': ['2.1.0', [FAIL_OPENSSH67_UNSAFE], [TEXT_ENCRYPT_AND_MAC]],
'umac-64@openssh.com': ['4.7', [], [TEXT_ENCRYPT_AND_MAC, TEXT_TAG_SIZE]],
'umac-128@openssh.com': ['6.2', [], [TEXT_ENCRYPT_AND_MAC]],
'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-sha2-256-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]],
'hmac-md5-96-etm@openssh.com': ['6.2', [FAIL_OPENSSH67_UNSAFE], [WARN_OPENSSH72_LEGACY]],
'hmac-md5-etm@openssh.com': ['6.2', [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-ripemd160-etm@openssh.com': ['6.2', [FAIL_OPENSSH67_UNSAFE]],
'umac-64-etm@openssh.com': ['6.2'],
'umac-64-etm@openssh.com': ['6.2', [], [TEXT_TAG_SIZE]],
'umac-128-etm@openssh.com': ['6.2'],
}
}