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Added one new host key type (ssh-rsa1) and one new cipher (blowfish).

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This commit is contained in:
Joe Testa 2020-03-18 12:19:05 -04:00
parent b70f4061cc
commit 1ac4041c09
2 changed files with 8 additions and 1 deletions
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4
README.md
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@ -69,6 +69,10 @@ $ snap install ssh-audit
```
## ChangeLog
### v2.2.1-dev (???)
- Added 1 new host key types: `ssh-rsa1`.
- Added 1 new ciphers: `blowfish`.
### v2.2.0 (2020-03-11)
- Marked host key type `ssh-rsa` as weak due to [practical SHA-1 collisions](https://eprint.iacr.org/2020/014.pdf).
- Added Windows builds.

5
ssh-audit.py
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@ -28,7 +28,7 @@ from __future__ import print_function
import base64, binascii, errno, hashlib, getopt, io, os, random, re, select, socket, struct, sys, json
VERSION = 'v2.2.0'
VERSION = 'v2.2.1-dev'
SSH_HEADER = 'SSH-{0}-OpenSSH_8.0' # SSH software to impersonate
if sys.version_info.major < 3:
@ -320,6 +320,7 @@ class SSH2(object): # pylint: disable=too-few-public-methods
FAIL_DBEAR53_DISABLED = 'disabled since Dropbear SSH 0.53'
FAIL_DEPRECATED_CIPHER = 'deprecated cipher'
FAIL_WEAK_CIPHER = 'using weak cipher'
FAIL_WEAK_ALGORITHM = 'using weak/obsolete algorithm'
FAIL_PLAINTEXT = 'no encryption/integrity'
FAIL_DEPRECATED_MAC = 'deprecated MAC'
WARN_CURVES_WEAK = 'using weak elliptic curves'
@ -389,6 +390,7 @@ class SSH2(object): # pylint: disable=too-few-public-methods
'ext-info-s': [[]], # Extension negotiation (RFC 8308)
},
'key': {
'ssh-rsa1': [[], [FAIL_WEAK_ALGORITHM]],
'rsa-sha2-256': [['7.2']],
'rsa-sha2-512': [['7.2']],
'ssh-ed25519': [['6.5,l10.7.0']],
@ -428,6 +430,7 @@ class SSH2(object): # pylint: disable=too-few-public-methods
'3des': [[], [FAIL_OPENSSH67_UNSAFE], [WARN_OPENSSH74_UNSAFE, WARN_CIPHER_WEAK, WARN_CIPHER_MODE, WARN_BLOCK_SIZE]],
'3des-cbc': [['1.2.2,d0.28,l10.2', '6.6', None], [FAIL_OPENSSH67_UNSAFE], [WARN_OPENSSH74_UNSAFE, WARN_CIPHER_WEAK, WARN_CIPHER_MODE, WARN_BLOCK_SIZE]],
'3des-ctr': [['d0.52'], [FAIL_WEAK_CIPHER]],
'blowfish': [[], [FAIL_WEAK_ALGORITHM], [WARN_BLOCK_SIZE]],
'blowfish-cbc': [['1.2.2,d0.28,l10.2', '6.6,d0.52', '7.1,d0.52'], [FAIL_OPENSSH67_UNSAFE, FAIL_DBEAR53_DISABLED], [WARN_OPENSSH72_LEGACY, WARN_CIPHER_MODE, WARN_BLOCK_SIZE]],
'blowfish-ctr': [[], [FAIL_OPENSSH67_UNSAFE, FAIL_DBEAR53_DISABLED], [WARN_OPENSSH72_LEGACY, WARN_CIPHER_MODE, WARN_BLOCK_SIZE]],
'twofish-cbc': [['d0.28', 'd2014.66'], [FAIL_DBEAR67_DISABLED], [WARN_CIPHER_MODE]],