Merge 31df27ec3e into 7b3402b207

README.md

@@ -183,13 +183,13 @@ For convenience, a web front-end on top of the command-line tool is available at
 ### v3.2.0-dev (???)
  - Expanded filter of CBC ciphers to flag for the Terrapin vulnerability.  It now includes more rarely found ciphers.
  - Color output is disabled if the `NO_COLOR` environment variable is set (see https://no-color.org/).
- - Fixed parsing of ecdsa-sha2-nistp* CA signatures on host keys.  Additionally, they are now flagged as potentially back-doored, just as standard host keys are.
+ - Fixed parsing of `ecdsa-sha2-nistp*` CA signatures on host keys.  Additionally, they are now flagged as potentially back-doored, just as standard host keys are.
+ - Gracefully handle rare exceptions (i.e.: crashes) while performing GEX tests.
+ - Built-in policies now include a change log (use `-L -v` to view them).
+ - Added built-in policies for Amazon Linux 2023, Debian 12, OpenSSH 9.7, and Rocky Linux 9.
  - The built-in man page (`-m`, `--manual`) is now available on Docker, PyPI, and Snap builds, in addition to the Windows build.
  - Snap builds are now architecture-independent.
- - Gracefully handle rare exceptions (i.e.: crashes) while performing GEX tests.
- - Added built-in policy for OpenSSH 9.7.
  - Changed Docker base image from `python:3-slim` to `python:3-alpine`, resulting in a 59% reduction in image size; credit [Daniel Thamdrup](https://github.com/dallemon).
- - Built-in policies now include a change log (use `-L -v` to view them).
  - Added 1 new key exchange algorithm: `gss-nistp384-sha384-*`.
 
 ### v3.1.0 (2023-12-20)

src/ssh_audit/builtin_policies.py

@@ -26,6 +26,19 @@ from typing import Any, Dict, List, Optional, Union
 # Each field maps directly to a private member variable of the Policy class.
 BUILTIN_POLICIES: Dict[str, Dict[str, Union[Optional[str], Optional[List[str]], bool, Dict[str, Any]]]] = {
 
+
+    # Amazon Linux 2023
+    'Hardened Amazon Linux 2023 (version 1)': {'version': '1', 'changelog': 'Initial version', 'banner': None, 'compressions': None, 'host_keys': ['rsa-sha2-512', 'rsa-sha2-256', 'ssh-ed25519'], 'optional_host_keys': ['sk-ssh-ed25519@openssh.com', 'ssh-ed25519-cert-v01@openssh.com', 'sk-ssh-ed25519-cert-v01@openssh.com', 'rsa-sha2-256-cert-v01@openssh.com', 'rsa-sha2-512-cert-v01@openssh.com'], 'kex': ['sntrup761x25519-sha512@openssh.com', 'curve25519-sha256', 'curve25519-sha256@libssh.org', 'diffie-hellman-group16-sha512', 'diffie-hellman-group18-sha512', 'diffie-hellman-group-exchange-sha256', 'kex-strict-s-v00@openssh.com'], 'ciphers': ['chacha20-poly1305@openssh.com', 'aes256-gcm@openssh.com', 'aes128-gcm@openssh.com', 'aes256-ctr', 'aes192-ctr', 'aes128-ctr'], 'macs': ['hmac-sha2-256-etm@openssh.com', 'hmac-sha2-512-etm@openssh.com', 'umac-128-etm@openssh.com'], 'hostkey_sizes': {"rsa-sha2-256": {"hostkey_size": 4096}, "rsa-sha2-256-cert-v01@openssh.com": {"ca_key_size": 4096, "ca_key_type": "ssh-rsa", "hostkey_size": 4096}, "rsa-sha2-512": {"hostkey_size": 4096}, "rsa-sha2-512-cert-v01@openssh.com": {"ca_key_size": 4096, "ca_key_type": "ssh-rsa", "hostkey_size": 4096}, "sk-ssh-ed25519-cert-v01@openssh.com": {"ca_key_size": 256, "ca_key_type": "ssh-ed25519", "hostkey_size": 256}, "sk-ssh-ed25519@openssh.com": {"hostkey_size": 256}, "ssh-ed25519": {"hostkey_size": 256}, "ssh-ed25519-cert-v01@openssh.com": {"ca_key_size": 256, "ca_key_type": "ssh-ed25519", "hostkey_size": 256}}, 'dh_modulus_sizes': {'diffie-hellman-group-exchange-sha256': 3072}, 'server_policy': True},
+
+
+    # Debian Server 12
+    'Hardened Debian 12 (version 1)': {'version': '1', 'changelog': 'Initial version', 'banner': None, 'compressions': None, 'host_keys': ['rsa-sha2-512', 'rsa-sha2-256', 'ssh-ed25519'], 'optional_host_keys': ['sk-ssh-ed25519@openssh.com', 'ssh-ed25519-cert-v01@openssh.com', 'sk-ssh-ed25519-cert-v01@openssh.com', 'rsa-sha2-256-cert-v01@openssh.com', 'rsa-sha2-512-cert-v01@openssh.com'], 'kex': ['sntrup761x25519-sha512@openssh.com', 'curve25519-sha256', 'curve25519-sha256@libssh.org', 'diffie-hellman-group16-sha512', 'diffie-hellman-group18-sha512', 'diffie-hellman-group-exchange-sha256', 'kex-strict-s-v00@openssh.com'], 'ciphers': ['chacha20-poly1305@openssh.com', 'aes256-gcm@openssh.com', 'aes128-gcm@openssh.com', 'aes256-ctr', 'aes192-ctr', 'aes128-ctr'], 'macs': ['hmac-sha2-256-etm@openssh.com', 'hmac-sha2-512-etm@openssh.com', 'umac-128-etm@openssh.com'], 'hostkey_sizes': {"rsa-sha2-256": {"hostkey_size": 4096}, "rsa-sha2-256-cert-v01@openssh.com": {"ca_key_size": 4096, "ca_key_type": "ssh-rsa", "hostkey_size": 4096}, "rsa-sha2-512": {"hostkey_size": 4096}, "rsa-sha2-512-cert-v01@openssh.com": {"ca_key_size": 4096, "ca_key_type": "ssh-rsa", "hostkey_size": 4096}, "sk-ssh-ed25519-cert-v01@openssh.com": {"ca_key_size": 256, "ca_key_type": "ssh-ed25519", "hostkey_size": 256}, "sk-ssh-ed25519@openssh.com": {"hostkey_size": 256}, "ssh-ed25519": {"hostkey_size": 256}, "ssh-ed25519-cert-v01@openssh.com": {"ca_key_size": 256, "ca_key_type": "ssh-ed25519", "hostkey_size": 256}}, 'dh_modulus_sizes': {'diffie-hellman-group-exchange-sha256': 3072}, 'server_policy': True},
+
+
+    # Rocky Linux 9
+    'Hardened Rocky Linux 9 (version 1)': {'version': '1', 'changelog': 'Initial version', 'banner': None, 'compressions': None, 'host_keys': ['rsa-sha2-512', 'rsa-sha2-256', 'ssh-ed25519'], 'optional_host_keys': ['sk-ssh-ed25519@openssh.com', 'ssh-ed25519-cert-v01@openssh.com', 'sk-ssh-ed25519-cert-v01@openssh.com', 'rsa-sha2-256-cert-v01@openssh.com', 'rsa-sha2-512-cert-v01@openssh.com'], 'kex': ['sntrup761x25519-sha512@openssh.com', 'curve25519-sha256', 'curve25519-sha256@libssh.org', 'diffie-hellman-group16-sha512', 'diffie-hellman-group18-sha512', 'diffie-hellman-group-exchange-sha256', 'kex-strict-s-v00@openssh.com'], 'ciphers': ['chacha20-poly1305@openssh.com', 'aes256-gcm@openssh.com', 'aes128-gcm@openssh.com', 'aes256-ctr', 'aes192-ctr', 'aes128-ctr'], 'macs': ['hmac-sha2-256-etm@openssh.com', 'hmac-sha2-512-etm@openssh.com', 'umac-128-etm@openssh.com'], 'hostkey_sizes': {"rsa-sha2-256": {"hostkey_size": 4096}, "rsa-sha2-256-cert-v01@openssh.com": {"ca_key_size": 4096, "ca_key_type": "ssh-rsa", "hostkey_size": 4096}, "rsa-sha2-512": {"hostkey_size": 4096}, "rsa-sha2-512-cert-v01@openssh.com": {"ca_key_size": 4096, "ca_key_type": "ssh-rsa", "hostkey_size": 4096}, "sk-ssh-ed25519-cert-v01@openssh.com": {"ca_key_size": 256, "ca_key_type": "ssh-ed25519", "hostkey_size": 256}, "sk-ssh-ed25519@openssh.com": {"hostkey_size": 256}, "ssh-ed25519": {"hostkey_size": 256}, "ssh-ed25519-cert-v01@openssh.com": {"ca_key_size": 256, "ca_key_type": "ssh-ed25519", "hostkey_size": 256}}, 'dh_modulus_sizes': {'diffie-hellman-group-exchange-sha256': 3072}, 'server_policy': True},
+
+
     # Ubuntu Server policies
 
     'Hardened Ubuntu Server 16.04 LTS (version 4)': {'version': '4', 'changelog': 'No change log available.', 'banner': None, 'compressions': None, 'host_keys': ['ssh-ed25519'], 'optional_host_keys': ['ssh-ed25519-cert-v01@openssh.com', 'rsa-sha2-256-cert-v01@openssh.com', 'rsa-sha2-512-cert-v01@openssh.com'], 'kex': ['curve25519-sha256@libssh.org', 'diffie-hellman-group-exchange-sha256'], 'ciphers': ['chacha20-poly1305@openssh.com', 'aes256-gcm@openssh.com', 'aes128-gcm@openssh.com', 'aes256-ctr', 'aes192-ctr', 'aes128-ctr'], 'macs': ['hmac-sha2-256-etm@openssh.com', 'hmac-sha2-512-etm@openssh.com', 'umac-128-etm@openssh.com'], 'hostkey_sizes': {"rsa-sha2-256-cert-v01@openssh.com": {"ca_key_size": 4096, "ca_key_type": "ssh-rsa", "hostkey_size": 4096}, "rsa-sha2-512-cert-v01@openssh.com": {"ca_key_size": 4096, "ca_key_type": "ssh-rsa", "hostkey_size": 4096}, "ssh-ed25519": {"hostkey_size": 256}, "ssh-ed25519-cert-v01@openssh.com": {"ca_key_size": 256, "ca_key_type": "ssh-ed25519", "hostkey_size": 256}}, 'dh_modulus_sizes': {'diffie-hellman-group-exchange-sha256': 3072}, 'server_policy': True},
@@ -82,6 +95,21 @@ BUILTIN_POLICIES: Dict[str, Dict[str, Union[Optional[str], Optional[List[str]],
     'Hardened OpenSSH Server v9.7 (version 1)': {'version': '1', 'changelog': 'Initial version.', 'banner': None, 'compressions': None, 'host_keys': ['rsa-sha2-512', 'rsa-sha2-256', 'ssh-ed25519'], 'optional_host_keys': ['sk-ssh-ed25519@openssh.com', 'ssh-ed25519-cert-v01@openssh.com', 'sk-ssh-ed25519-cert-v01@openssh.com', 'rsa-sha2-256-cert-v01@openssh.com', 'rsa-sha2-512-cert-v01@openssh.com'], 'kex': ['sntrup761x25519-sha512@openssh.com', 'curve25519-sha256', 'curve25519-sha256@libssh.org', 'diffie-hellman-group16-sha512', 'diffie-hellman-group18-sha512', 'diffie-hellman-group-exchange-sha256', 'ext-info-s', 'kex-strict-s-v00@openssh.com'], 'ciphers': ['chacha20-poly1305@openssh.com', 'aes256-gcm@openssh.com', 'aes128-gcm@openssh.com', 'aes256-ctr', 'aes192-ctr', 'aes128-ctr'], 'macs': ['hmac-sha2-256-etm@openssh.com', 'hmac-sha2-512-etm@openssh.com', 'umac-128-etm@openssh.com'], 'hostkey_sizes': {"rsa-sha2-256": {"hostkey_size": 4096}, "rsa-sha2-256-cert-v01@openssh.com": {"ca_key_size": 4096, "ca_key_type": "ssh-rsa", "hostkey_size": 4096}, "rsa-sha2-512": {"hostkey_size": 4096}, "rsa-sha2-512-cert-v01@openssh.com": {"ca_key_size": 4096, "ca_key_type": "ssh-rsa", "hostkey_size": 4096}, "sk-ssh-ed25519-cert-v01@openssh.com": {"ca_key_size": 256, "ca_key_type": "ssh-ed25519", "hostkey_size": 256}, "sk-ssh-ed25519@openssh.com": {"hostkey_size": 256}, "ssh-ed25519": {"hostkey_size": 256}, "ssh-ed25519-cert-v01@openssh.com": {"ca_key_size": 256, "ca_key_type": "ssh-ed25519", "hostkey_size": 256}}, 'dh_modulus_sizes': {'diffie-hellman-group-exchange-sha256': 3072}, 'server_policy': True},
 
 
+    # Amazon Linux Policies
+
+    'Hardened Amazon Linux Client 2023 (version 1)': {'version': '1', 'changelog': 'Initial version.', 'banner': None, 'compressions': None, 'host_keys': ['sk-ssh-ed25519-cert-v01@openssh.com', 'ssh-ed25519-cert-v01@openssh.com', 'rsa-sha2-512-cert-v01@openssh.com', 'rsa-sha2-256-cert-v01@openssh.com', 'sk-ssh-ed25519@openssh.com', 'ssh-ed25519', 'rsa-sha2-512', 'rsa-sha2-256'], 'optional_host_keys': None, 'kex': ['sntrup761x25519-sha512@openssh.com', 'curve25519-sha256', 'curve25519-sha256@libssh.org', 'diffie-hellman-group16-sha512', 'diffie-hellman-group18-sha512', 'diffie-hellman-group-exchange-sha256', 'ext-info-c', 'kex-strict-c-v00@openssh.com'], 'ciphers': ['chacha20-poly1305@openssh.com', 'aes256-gcm@openssh.com', 'aes128-gcm@openssh.com', 'aes256-ctr', 'aes192-ctr', 'aes128-ctr'], 'macs': ['hmac-sha2-256-etm@openssh.com', 'hmac-sha2-512-etm@openssh.com', 'umac-128-etm@openssh.com'], 'hostkey_sizes': None, 'dh_modulus_sizes': None, 'server_policy': False},
+
+
+    # Debian Client Policies
+
+    'Hardened Debian Client 12 (version 1)': {'version': '1', 'changelog': 'Initial version.', 'banner': None, 'compressions': None, 'host_keys': ['sk-ssh-ed25519-cert-v01@openssh.com', 'ssh-ed25519-cert-v01@openssh.com', 'rsa-sha2-512-cert-v01@openssh.com', 'rsa-sha2-256-cert-v01@openssh.com', 'sk-ssh-ed25519@openssh.com', 'ssh-ed25519', 'rsa-sha2-512', 'rsa-sha2-256'], 'optional_host_keys': None, 'kex': ['sntrup761x25519-sha512@openssh.com', 'curve25519-sha256', 'curve25519-sha256@libssh.org', 'diffie-hellman-group16-sha512', 'diffie-hellman-group18-sha512', 'diffie-hellman-group-exchange-sha256', 'ext-info-c', 'kex-strict-c-v00@openssh.com'], 'ciphers': ['chacha20-poly1305@openssh.com', 'aes256-gcm@openssh.com', 'aes128-gcm@openssh.com', 'aes256-ctr', 'aes192-ctr', 'aes128-ctr'], 'macs': ['hmac-sha2-256-etm@openssh.com', 'hmac-sha2-512-etm@openssh.com', 'umac-128-etm@openssh.com'], 'hostkey_sizes': None, 'dh_modulus_sizes': None, 'server_policy': False},
+
+
+    # Rocky Linux Policies
+
+    'Hardened Rocky Linux Client 9 (version 1)': {'version': '1', 'changelog': 'Initial version.', 'banner': None, 'compressions': None, 'host_keys': ['sk-ssh-ed25519-cert-v01@openssh.com', 'ssh-ed25519-cert-v01@openssh.com', 'rsa-sha2-512-cert-v01@openssh.com', 'rsa-sha2-256-cert-v01@openssh.com', 'sk-ssh-ed25519@openssh.com', 'ssh-ed25519', 'rsa-sha2-512', 'rsa-sha2-256'], 'optional_host_keys': None, 'kex': ['sntrup761x25519-sha512@openssh.com', 'curve25519-sha256', 'curve25519-sha256@libssh.org', 'diffie-hellman-group16-sha512', 'diffie-hellman-group18-sha512', 'diffie-hellman-group-exchange-sha256', 'ext-info-c', 'kex-strict-c-v00@openssh.com'], 'ciphers': ['chacha20-poly1305@openssh.com', 'aes256-gcm@openssh.com', 'aes128-gcm@openssh.com', 'aes256-ctr', 'aes192-ctr', 'aes128-ctr'], 'macs': ['hmac-sha2-256-etm@openssh.com', 'hmac-sha2-512-etm@openssh.com', 'umac-128-etm@openssh.com'], 'hostkey_sizes': None, 'dh_modulus_sizes': None, 'server_policy': False},
+
+
     # Ubuntu Client policies
 
     'Hardened Ubuntu Client 16.04 LTS (version 2)': {'version': '2', 'changelog': 'No change log available.', 'banner': None, 'compressions': None, 'host_keys': ['ssh-ed25519', 'ssh-ed25519-cert-v01@openssh.com', 'rsa-sha2-256', 'rsa-sha2-512'], 'optional_host_keys': None, 'kex': ['curve25519-sha256@libssh.org', 'diffie-hellman-group-exchange-sha256', 'ext-info-c'], 'ciphers': ['chacha20-poly1305@openssh.com', 'aes256-gcm@openssh.com', 'aes128-gcm@openssh.com', 'aes256-ctr', 'aes192-ctr', 'aes128-ctr'], 'macs': ['hmac-sha2-256-etm@openssh.com', 'hmac-sha2-512-etm@openssh.com', 'umac-128-etm@openssh.com'], 'hostkey_sizes': None, 'dh_modulus_sizes': None, 'server_policy': False},
@@ -92,4 +120,5 @@ BUILTIN_POLICIES: Dict[str, Dict[str, Union[Optional[str], Optional[List[str]],
 
     'Hardened Ubuntu Client 22.04 LTS (version 4)': {'version': '4', 'changelog': 'Added kex-strict-c-v00@openssh.com to kex list.', 'banner': None, 'compressions': None, 'host_keys': ['sk-ssh-ed25519-cert-v01@openssh.com', 'ssh-ed25519-cert-v01@openssh.com', 'rsa-sha2-512-cert-v01@openssh.com', 'rsa-sha2-256-cert-v01@openssh.com', 'sk-ssh-ed25519@openssh.com', 'ssh-ed25519', 'rsa-sha2-512', 'rsa-sha2-256'], 'optional_host_keys': None, 'kex': ['sntrup761x25519-sha512@openssh.com', 'curve25519-sha256', 'curve25519-sha256@libssh.org', 'diffie-hellman-group16-sha512', 'diffie-hellman-group18-sha512', 'diffie-hellman-group-exchange-sha256', 'ext-info-c', 'kex-strict-c-v00@openssh.com'], 'ciphers': ['chacha20-poly1305@openssh.com', 'aes256-gcm@openssh.com', 'aes128-gcm@openssh.com', 'aes256-ctr', 'aes192-ctr', 'aes128-ctr'], 'macs': ['hmac-sha2-256-etm@openssh.com', 'hmac-sha2-512-etm@openssh.com', 'umac-128-etm@openssh.com'], 'hostkey_sizes': None, 'dh_modulus_sizes': None, 'server_policy': False},
 
+
 }

src/ssh_audit/ssh2_kexdb.py

@@ -62,7 +62,8 @@ class SSH2_KexDB:  # pylint: disable=too-few-public-methods
     WARN_TAG_SIZE_96 = 'using small 96-bit tag size'
 
     INFO_DEFAULT_OPENSSH_CIPHER = 'default cipher since OpenSSH 6.9'
-    INFO_DEFAULT_OPENSSH_KEX = 'default key exchange since OpenSSH 6.4'
+    INFO_DEFAULT_OPENSSH_KEX_64_TO_89 = 'default key exchange from OpenSSH 6.4 to 8.9'
+    INFO_DEFAULT_OPENSSH_KEX_90 = 'default key exchange since OpenSSH 9.0'
     INFO_DEPRECATED_IN_OPENSSH88 = 'deprecated in OpenSSH 8.8: https://www.openssh.com/txt/release-8.8'
     INFO_DISABLED_IN_DBEAR67 = 'disabled in Dropbear SSH 2015.67'
     INFO_DISABLED_IN_OPENSSH70 = 'disabled in OpenSSH 7.0: https://www.openssh.com/txt/release-7.0'
@@ -81,8 +82,8 @@ class SSH2_KexDB:  # pylint: disable=too-few-public-methods
         # Format: 'algorithm_name': [['version_first_appeared_in'], [reason_for_failure1, reason_for_failure2, ...], [warning1, warning2, ...], [info1, info2, ...]]
         'kex': {
             'Curve25519SHA256': [[]],
-            'curve25519-sha256': [['7.4,d2018.76'], [], [], [INFO_DEFAULT_OPENSSH_KEX]],
-            'curve25519-sha256@libssh.org': [['6.4,d2013.62,l10.6.0'], [], [], [INFO_DEFAULT_OPENSSH_KEX]],
+            'curve25519-sha256': [['7.4,d2018.76'], [], [], [INFO_DEFAULT_OPENSSH_KEX_64_TO_89]],
+            'curve25519-sha256@libssh.org': [['6.4,d2013.62,l10.6.0'], [], [], [INFO_DEFAULT_OPENSSH_KEX_64_TO_89]],
             'curve448-sha512': [[]],
             'curve448-sha512@libssh.org': [[]],
             'diffie-hellman-group14-sha1': [['3.9,d0.53,l10.6.0'], [FAIL_SHA1], [WARN_2048BIT_MODULUS]],
@@ -191,7 +192,7 @@ class SSH2_KexDB:  # pylint: disable=too-few-public-methods
             'rsa2048-sha256': [[], [], [WARN_2048BIT_MODULUS]],
             'sm2kep-sha2-nistp256': [[], [FAIL_NSA_BACKDOORED_CURVE, FAIL_UNTRUSTED]],
             'sntrup4591761x25519-sha512@tinyssh.org': [['8.0', '8.4'], [], [WARN_EXPERIMENTAL], [INFO_WITHDRAWN_PQ_ALG]],
-            'sntrup761x25519-sha512@openssh.com': [['8.5'], [], []],
+            'sntrup761x25519-sha512@openssh.com': [['8.5'], [], [], [INFO_DEFAULT_OPENSSH_KEX_90]],
             'x25519-kyber-512r3-sha256-d00@amazon.com': [[]],
             'x25519-kyber512-sha512@aws.amazon.com': [[]],
         },

test/docker/expected_results/dropbear_2019.78_test1.json

@@ -96,7 +96,7 @@
             "algorithm": "curve25519-sha256",
             "notes": {
                 "info": [
-                    "default key exchange since OpenSSH 6.4",
+                    "default key exchange from OpenSSH 6.4 to 8.9",
                     "available since OpenSSH 7.4, Dropbear SSH 2018.76"
                 ]
             }
@@ -105,7 +105,7 @@
             "algorithm": "curve25519-sha256@libssh.org",
             "notes": {
                 "info": [
-                    "default key exchange since OpenSSH 6.4",
+                    "default key exchange from OpenSSH 6.4 to 8.9",
                     "available since OpenSSH 6.4, Dropbear SSH 2013.62"
                 ]
             }

test/docker/expected_results/dropbear_2019.78_test1.txt

@@ -6,9 +6,9 @@
 
 # key exchange algorithms
 (kex) curve25519-sha256              -- [info] available since OpenSSH 7.4, Dropbear SSH 2018.76
-                                     `- [info] default key exchange since OpenSSH 6.4
+                                     `- [info] default key exchange from OpenSSH 6.4 to 8.9
 (kex) curve25519-sha256@libssh.org   -- [info] available since OpenSSH 6.4, Dropbear SSH 2013.62
-                                     `- [info] default key exchange since OpenSSH 6.4
+                                     `- [info] default key exchange from OpenSSH 6.4 to 8.9
 (kex) ecdh-sha2-nistp521             -- [fail] using elliptic curves that are suspected as being backdoored by the U.S. National Security Agency
                                      `- [info] available since OpenSSH 5.7, Dropbear SSH 2013.62
 (kex) ecdh-sha2-nistp384             -- [fail] using elliptic curves that are suspected as being backdoored by the U.S. National Security Agency

test/docker/expected_results/openssh_8.0p1_test1.json

@@ -115,7 +115,7 @@
             "algorithm": "curve25519-sha256",
             "notes": {
                 "info": [
-                    "default key exchange since OpenSSH 6.4",
+                    "default key exchange from OpenSSH 6.4 to 8.9",
                     "available since OpenSSH 7.4, Dropbear SSH 2018.76"
                 ]
             }
@@ -124,7 +124,7 @@
             "algorithm": "curve25519-sha256@libssh.org",
             "notes": {
                 "info": [
-                    "default key exchange since OpenSSH 6.4",
+                    "default key exchange from OpenSSH 6.4 to 8.9",
                     "available since OpenSSH 6.4, Dropbear SSH 2013.62"
                 ]
             }

test/docker/expected_results/openssh_8.0p1_test1.txt

@@ -12,9 +12,9 @@
 
 # key exchange algorithms
 (kex) curve25519-sha256                     -- [info] available since OpenSSH 7.4, Dropbear SSH 2018.76
-                                            `- [info] default key exchange since OpenSSH 6.4
+                                            `- [info] default key exchange from OpenSSH 6.4 to 8.9
 (kex) curve25519-sha256@libssh.org          -- [info] available since OpenSSH 6.4, Dropbear SSH 2013.62
-                                            `- [info] default key exchange since OpenSSH 6.4
+                                            `- [info] default key exchange from OpenSSH 6.4 to 8.9
 (kex) ecdh-sha2-nistp256                    -- [fail] using elliptic curves that are suspected as being backdoored by the U.S. National Security Agency
                                             `- [info] available since OpenSSH 5.7, Dropbear SSH 2013.62
 (kex) ecdh-sha2-nistp384                    -- [fail] using elliptic curves that are suspected as being backdoored by the U.S. National Security Agency

test/docker/expected_results/openssh_8.0p1_test2.json

@@ -105,7 +105,7 @@
             "algorithm": "curve25519-sha256",
             "notes": {
                 "info": [
-                    "default key exchange since OpenSSH 6.4",
+                    "default key exchange from OpenSSH 6.4 to 8.9",
                     "available since OpenSSH 7.4, Dropbear SSH 2018.76"
                 ]
             }
@@ -114,7 +114,7 @@
             "algorithm": "curve25519-sha256@libssh.org",
             "notes": {
                 "info": [
-                    "default key exchange since OpenSSH 6.4",
+                    "default key exchange from OpenSSH 6.4 to 8.9",
                     "available since OpenSSH 6.4, Dropbear SSH 2013.62"
                 ]
             }

test/docker/expected_results/openssh_8.0p1_test2.txt

@@ -12,9 +12,9 @@
 
 # key exchange algorithms
 (kex) curve25519-sha256                     -- [info] available since OpenSSH 7.4, Dropbear SSH 2018.76
-                                            `- [info] default key exchange since OpenSSH 6.4
+                                            `- [info] default key exchange from OpenSSH 6.4 to 8.9
 (kex) curve25519-sha256@libssh.org          -- [info] available since OpenSSH 6.4, Dropbear SSH 2013.62
-                                            `- [info] default key exchange since OpenSSH 6.4
+                                            `- [info] default key exchange from OpenSSH 6.4 to 8.9
 (kex) ecdh-sha2-nistp256                    -- [fail] using elliptic curves that are suspected as being backdoored by the U.S. National Security Agency
                                             `- [info] available since OpenSSH 5.7, Dropbear SSH 2013.62
 (kex) ecdh-sha2-nistp384                    -- [fail] using elliptic curves that are suspected as being backdoored by the U.S. National Security Agency

test/docker/expected_results/openssh_8.0p1_test3.json

@@ -105,7 +105,7 @@
             "algorithm": "curve25519-sha256",
             "notes": {
                 "info": [
-                    "default key exchange since OpenSSH 6.4",
+                    "default key exchange from OpenSSH 6.4 to 8.9",
                     "available since OpenSSH 7.4, Dropbear SSH 2018.76"
                 ]
             }
@@ -114,7 +114,7 @@
             "algorithm": "curve25519-sha256@libssh.org",
             "notes": {
                 "info": [
-                    "default key exchange since OpenSSH 6.4",
+                    "default key exchange from OpenSSH 6.4 to 8.9",
                     "available since OpenSSH 6.4, Dropbear SSH 2013.62"
                 ]
             }

test/docker/expected_results/openssh_8.0p1_test3.txt

@@ -12,9 +12,9 @@
 
 # key exchange algorithms
 (kex) curve25519-sha256                     -- [info] available since OpenSSH 7.4, Dropbear SSH 2018.76
-                                            `- [info] default key exchange since OpenSSH 6.4
+                                            `- [info] default key exchange from OpenSSH 6.4 to 8.9
 (kex) curve25519-sha256@libssh.org          -- [info] available since OpenSSH 6.4, Dropbear SSH 2013.62
-                                            `- [info] default key exchange since OpenSSH 6.4
+                                            `- [info] default key exchange from OpenSSH 6.4 to 8.9
 (kex) diffie-hellman-group-exchange-sha256 (4096-bit) -- [info] available since OpenSSH 4.4
                                                       `- [info] OpenSSH's GEX fallback mechanism was triggered during testing. Very old SSH clients will still be able to create connections using a 2048-bit modulus, though modern clients will use 4096. This can only be disabled by recompiling the code (see https://github.com/openssh/openssh-portable/blob/V_9_4/dh.c#L477).
 

test/docker/expected_results/tinyssh_20190101_test1.json

@@ -43,7 +43,7 @@
             "algorithm": "curve25519-sha256",
             "notes": {
                 "info": [
-                    "default key exchange since OpenSSH 6.4",
+                    "default key exchange from OpenSSH 6.4 to 8.9",
                     "available since OpenSSH 7.4, Dropbear SSH 2018.76"
                 ]
             }
@@ -52,7 +52,7 @@
             "algorithm": "curve25519-sha256@libssh.org",
             "notes": {
                 "info": [
-                    "default key exchange since OpenSSH 6.4",
+                    "default key exchange from OpenSSH 6.4 to 8.9",
                     "available since OpenSSH 6.4, Dropbear SSH 2013.62"
                 ]
             }

test/docker/expected_results/tinyssh_20190101_test1.txt

@@ -5,9 +5,9 @@
 
 # key exchange algorithms
 (kex) curve25519-sha256                       -- [info] available since OpenSSH 7.4, Dropbear SSH 2018.76
-                                              `- [info] default key exchange since OpenSSH 6.4
+                                              `- [info] default key exchange from OpenSSH 6.4 to 8.9
 (kex) curve25519-sha256@libssh.org            -- [info] available since OpenSSH 6.4, Dropbear SSH 2013.62
-                                              `- [info] default key exchange since OpenSSH 6.4
+                                              `- [info] default key exchange from OpenSSH 6.4 to 8.9
 (kex) sntrup4591761x25519-sha512@tinyssh.org  -- [warn] using experimental algorithm
                                               `- [info] available since OpenSSH 8.0
                                               `- [info] the sntrup4591761 algorithm was withdrawn, as it may not provide strong post-quantum security

test/test_ssh2.py

@@ -64,7 +64,7 @@ class TestSSH2:
     def _kex_payload_with_gss(self):
         w = self.wbuf()
         w.write(b'\x00\x11\x22\x33\x44\x55\x66\x77\x88\x99\xaa\xbb\xcc\xdd\xee\xff')
-        w.write_list(['gss-gex-sha1-dZuIebMjgUqaxvbF7hDbAw==', 'gss-gex-sha1-vz8J1E9PzLr8b1K+0remTg==', 'gss-group14-sha1-dZuIebMjgUqaxvbF7hDbAw==', 'gss-group14-sha1-vz8J1E9PzLr8b1K+0remTg==', 'gss-group14-sha256-dZuIebMjgUqaxvbF7hDbAw==', 'gss-group14-sha256-vz8J1E9PzLr8b1K+0remTg==', 'gss-group16-sha512-dZuIebMjgUqaxvbF7hDbAw==', 'gss-group16-sha512-vz8J1E9PzLr8b1K+0remTg==', 'gss-group18-sha512-dZuIebMjgUqaxvbF7hDbAw==', 'gss-group18-sha512-vz8J1E9PzLr8b1K+0remTg==', 'gss-group1-sha1-dZuIebMjgUqaxvbF7hDbAw==', 'gss-group1-sha1-vz8J1E9PzLr8b1K+0remTg==', 'gss-curve448-sha512-XXX'])
+        w.write_list(['gss-gex-sha1-dZuIebMjgUqaxvbF7hDbAw==', 'gss-gex-sha1-vz8J1E9PzLr8b1K+0remTg==', 'gss-group14-sha1-dZuIebMjgUqaxvbF7hDbAw==', 'gss-group14-sha1-vz8J1E9PzLr8b1K+0remTg==', 'gss-group14-sha256-dZuIebMjgUqaxvbF7hDbAw==', 'gss-group14-sha256-vz8J1E9PzLr8b1K+0remTg==', 'gss-group16-sha512-dZuIebMjgUqaxvbF7hDbAw==', 'gss-group16-sha512-vz8J1E9PzLr8b1K+0remTg==', 'gss-group18-sha512-dZuIebMjgUqaxvbF7hDbAw==', 'gss-group18-sha512-vz8J1E9PzLr8b1K+0remTg==', 'gss-group1-sha1-dZuIebMjgUqaxvbF7hDbAw==', 'gss-group1-sha1-vz8J1E9PzLr8b1K+0remTg==', 'gss-curve448-sha512-XXX', 'gss-nistp256-sha256-RANDOMCHARSTOTESTWILDCARDMATCHING'])
         w.write_list(['ssh-ed25519'])
         w.write_list(['chacha20-poly1305@openssh.com'])
         w.write_list(['chacha20-poly1305@openssh.com'])