# ssh-audit [![License](https://img.shields.io/badge/license-MIT-brightgreen.svg)](https://github.com/jtesta/ssh-audit/blob/master/LICENSE) [![PyPI Downloads](https://img.shields.io/pypi/dm/ssh-audit)](https://pypi.org/project/ssh-audit/) [![Docker Pulls](https://img.shields.io/docker/pulls/positronsecurity/ssh-audit)](https://hub.docker.com/r/positronsecurity/ssh-audit) [![Build Status](https://github.com/jtesta/ssh-audit/actions/workflows/tox.yaml/badge.svg)](https://github.com/jtesta/ssh-audit/actions) [![PRs Welcome](https://img.shields.io/badge/PRs-welcome-brightgreen.svg)](https://github.com/jtesta/ssh-audit/blob/master/CONTRIBUTING.md) **ssh-audit** is a tool for ssh server & client configuration auditing. [jtesta/ssh-audit](https://github.com/jtesta/ssh-audit/) (v2.0+) is the updated and maintained version of ssh-audit forked from [arthepsy/ssh-audit](https://github.com/arthepsy/ssh-audit) (v1.x) due to inactivity. - [Features](#features) - [Usage](#usage) - [Screenshots](#screenshots) - [Server Standard Audit Example](#server-standard-audit-example) - [Server Policy Audit Example](#server-policy-audit-example) - [Client Standard Audit Example](#client-standard-audit-example) - [Hardening Guides](#hardening-guides) - [Pre-Built Packages](#pre-built-packages) - [Web Front-End](#web-front-end) - [ChangeLog](#changelog) ## Features - SSH1 and SSH2 protocol server support; - analyze SSH client configuration; - grab banner, recognize device or software and operating system, detect compression; - gather key-exchange, host-key, encryption and message authentication code algorithms; - output algorithm information (available since, removed/disabled, unsafe/weak/legacy, etc); - output algorithm recommendations (append or remove based on recognized software version); - output security information (related issues, assigned CVE list, etc); - analyze SSH version compatibility based on algorithm information; - historical information from OpenSSH, Dropbear SSH and libssh; - policy scans to ensure adherence to a hardened/standard configuration; - runs on Linux and Windows; - supports Python 3.8 - 3.12; - no dependencies ## Usage ``` usage: ssh-audit.py [options] -h, --help print this help -1, --ssh1 force ssh version 1 only -2, --ssh2 force ssh version 2 only -4, --ipv4 enable IPv4 (order of precedence) -6, --ipv6 enable IPv6 (order of precedence) -b, --batch batch output -c, --client-audit starts a server on port 2222 to audit client software config (use -p to change port; use -t to change timeout) -d, --debug Enable debug output. -g, --gex-test= dh gex modulus size test -j, --json JSON output (use -jj to enable indents) -l, --level= minimum output level (info|warn|fail) -L, --list-policies list all the official, built-in policies --lookup= looks up an algorithm(s) without connecting to a server -m, --manual print the man page (Docker, PyPI, Snap, and Windows builds only) -M, --make-policy= creates a policy based on the target server (i.e.: the target server has the ideal configuration that other servers should adhere to) -n, --no-colors disable colors -p, --port= port to connect -P, --policy=<"policy name" | policy.txt> run a policy test using the specified policy -t, --timeout= timeout (in seconds) for connection and reading (default: 5) -T, --targets= a file containing a list of target hosts (one per line, format HOST[:PORT]) --threads= number of threads to use when scanning multiple targets (-T/--targets) (default: 32) -v, --verbose verbose output ``` * if both IPv4 and IPv6 are used, order of precedence can be set by using either `-46` or `-64`. * batch flag `-b` will output sections without header and without empty lines (implies verbose flag). * verbose flag `-v` will prefix each line with section type and algorithm name. * an exit code of 0 is returned when all algorithms are considered secure (for a standard audit), or when a policy check passes (for a policy audit). Basic server auditing: ``` ssh-audit localhost ssh-audit 127.0.0.1 ssh-audit 127.0.0.1:222 ssh-audit ::1 ssh-audit [::1]:222 ``` To run a standard audit against many servers (place targets into servers.txt, one on each line in the format of `HOST[:PORT]`): ``` ssh-audit -T servers.txt ``` To audit a client configuration (listens on port 2222 by default; connect using `ssh -p 2222 anything@localhost`): ``` ssh-audit -c ``` To audit a client configuration, with a listener on port 4567: ``` ssh-audit -c -p 4567 ``` To list all official built-in policies (hint: use resulting policy names with `-P`/`--policy`): ``` ssh-audit -L ``` To run a policy audit against a server: ``` ssh-audit -P ["policy name" | path/to/server_policy.txt] targetserver ``` To run a policy audit against a client: ``` ssh-audit -c -P ["policy name" | path/to/client_policy.txt] ``` To run a policy audit against many servers: ``` ssh-audit -T servers.txt -P ["policy name" | path/to/server_policy.txt] ``` To create a policy based on a target server (which can be manually edited): ``` ssh-audit -M new_policy.txt targetserver ``` ## Screenshots ### Server Standard Audit Example Below is a screen shot of the standard server-auditing output when connecting to an unhardened OpenSSH v5.3 service: ![screenshot](https://user-images.githubusercontent.com/2982011/64388792-317e6f80-d00e-11e9-826e-a4934769bb07.png) ### Server Policy Audit Example Below is a screen shot of the policy auditing output when connecting to an un-hardened Ubuntu Server 20.04 machine (hint: use `-L`/`--list-policies` to see names of built-in policies to use with `-P`/`--policy`): ![screenshot](https://user-images.githubusercontent.com/2982011/94370881-95178700-00c0-11eb-8705-3157a4669dc0.png) After applying the steps in the hardening guide (see below), the output changes to the following: ![screenshot](https://user-images.githubusercontent.com/2982011/94370873-87620180-00c0-11eb-9a59-469f61a56ce1.png) ### Client Standard Audit Example Below is a screen shot of the client-auditing output when an unhardened OpenSSH v7.2 client connects: ![client_screenshot](https://user-images.githubusercontent.com/2982011/68867998-b946c100-06c4-11ea-975f-1f47e4178a74.png) ## Hardening Guides Guides to harden server & client configuration can be found here: [https://www.ssh-audit.com/hardening_guides.html](https://www.ssh-audit.com/hardening_guides.html) ## Pre-Built Packages Pre-built packages are available for Windows (see the [Releases](https://github.com/jtesta/ssh-audit/releases) page), PyPI, Snap, and Docker: To install from PyPI: ``` $ pip3 install ssh-audit ``` To install the Snap package: ``` $ snap install ssh-audit ``` To install from Dockerhub: ``` $ docker pull positronsecurity/ssh-audit ``` (Then run with: `docker run -it -p 2222:2222 positronsecurity/ssh-audit 10.1.1.1`) The status of various other platform packages can be found below (via Repology): Packaging status ## Web Front-End For convenience, a web front-end on top of the command-line tool is available at [https://www.ssh-audit.com/](https://www.ssh-audit.com/). ## ChangeLog ### 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. - 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. ### v3.1.0 (2023-12-20) - Added test for the Terrapin message prefix truncation vulnerability ([CVE-2023-48795](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-48795)). - Dropped support for Python 3.7 (EOL was reached in June 2023). - Added Python 3.12 support. - In server policies, reduced expected DH modulus sizes from 4096 to 3072 to match the [online hardening guides](https://ssh-audit.com/hardening_guides.html) (note that 3072-bit moduli provide the equivalent of 128-bit symmetric security). - In Ubuntu 22.04 client policy, moved host key types `sk-ssh-ed25519@openssh.com` and `ssh-ed25519` to the end of all certificate types. - Updated Ubuntu Server & Client policies for 20.04 and 22.04 to account for key exchange list changes due to Terrapin vulnerability patches. - Re-organized option host key types for OpenSSH 9.2 server policy to correspond with updated Debian 12 hardening guide. - Added built-in policies for OpenSSH 9.5 and 9.6. - Added an `additional_notes` field to the JSON output. ### v3.0.0 (2023-09-07) - Results from concurrent scans against multiple hosts are no longer improperly combined; bug discovered by [Adam Russell](https://github.com/thecliguy). - Hostname resolution failure no longer causes scans against multiple hosts to terminate unexpectedly; credit [Dani Cuesta](https://github.com/daniel-cues). - Algorithm recommendations resulting from warnings are now printed in yellow instead of red; credit [Adam Russell](https://github.com/thecliguy). - Added failure, warning, and info notes to JSON output (note that this results in a breaking change to the banner protocol, "enc", and "mac" fields); credit [Bareq Al-Azzawi](https://github.com/BareqAZ). - Docker Makefile now creates multi-arch builds for amd64, arm64, and armv7; credit [Sebastian Cohnen](https://github.com/tisba). - Fixed crash during GEX tests. - Refined GEX testing against OpenSSH servers: when the fallback mechanism is suspected of being triggered, perform an additional test to obtain more accurate results. - The color of all notes will be printed in green when the related algorithm is rated good. - Prioritized host key certificate algorithms for Ubuntu 22.04 LTS client policy. - Marked all NIST K-, B-, and T-curves as unproven since they are so rarely used. - Added built-in policy for OpenSSH 9.4. - Added 12 new host keys: `ecdsa-sha2-curve25519`, `ecdsa-sha2-nistb233`, `ecdsa-sha2-nistb409`, `ecdsa-sha2-nistk163`, `ecdsa-sha2-nistk233`, `ecdsa-sha2-nistk283`, `ecdsa-sha2-nistk409`, `ecdsa-sha2-nistp224`, `ecdsa-sha2-nistp192`, `ecdsa-sha2-nistt571`, `ssh-dsa`, `x509v3-sign-rsa-sha256`. - Added 15 new key exchanges: `curve448-sha512@libssh.org`, `ecdh-nistp256-kyber-512r3-sha256-d00@openquantumsafe.org`, `ecdh-nistp384-kyber-768r3-sha384-d00@openquantumsafe.org`, `ecdh-nistp521-kyber-1024r3-sha512-d00@openquantumsafe.org`, `ecdh-sha2-brainpoolp256r1@genua.de`, `ecdh-sha2-brainpoolp384r1@genua.de`, `ecdh-sha2-brainpoolp521r1@genua.de`, `kexAlgoDH14SHA1`, `kexAlgoDH1SHA1`, `kexAlgoECDH256`, `kexAlgoECDH384`, `kexAlgoECDH521`, `sm2kep-sha2-nistp256`, `x25519-kyber-512r3-sha256-d00@amazon.com`, `x25519-kyber512-sha512@aws.amazon.com`. - Added 8 new ciphers: `aes192-gcm@openssh.com`, `cast128-12-cbc`, `cast128-12-cfb`, `cast128-12-ecb`, `cast128-12-ofb`, `des-cfb`, `des-ecb`, `des-ofb`. - Added 14 new MACs: `cbcmac-3des`, `cbcmac-aes`, `cbcmac-blowfish`, `cbcmac-des`, `cbcmac-rijndael`, `cbcmac-twofish`, `hmac-sha256-96`, `md5`, `md5-8`, `ripemd160`, `ripemd160-8`, `sha1`, `sha1-8`, `umac-128`. ### v2.9.0 (2023-04-29) - Dropped support for Python 3.6, as it reached EOL at the end of 2021. - Added Ubuntu Server & Client 22.04 hardening policies. - Removed experimental warning tag from `sntrup761x25519-sha512@openssh.com`. - Updated CVE database; credit [Alexandre Zanni](https://github.com/noraj). - Added `-g` and `--gex-test` for granular GEX modulus size tests; credit [Adam Russell](https://github.com/thecliguy). - Snap packages now print more user-friendly error messages when permission errors are encountered. - JSON 'target' field now always includes port number; credit [tomatohater1337](https://github.com/tomatohater1337). - JSON output now includes recommendations and CVE data. - Mixed host key/CA key types (i.e.: RSA host keys signed with ED25519 CAs, etc.) are now properly handled. - Warnings are now printed for 2048-bit moduli; partial credit [Adam Russell](https://github.com/thecliguy). - SHA-1 algorithms now cause failures. - CBC mode ciphers are now warnings instead of failures. - Generic failure/warning messages replaced with more specific reasons (i.e.: 'using weak cipher' => 'using broken RC4 cipher'). - Updated built-in policies to include missing host key size information. - Added built-in policies for OpenSSH 8.8, 8.9, 9.0, 9.1, 9.2, and 9.3. - Added 33 new host keys: `dsa2048-sha224@libassh.org`, `dsa2048-sha256@libassh.org`, `dsa3072-sha256@libassh.org`, `ecdsa-sha2-1.3.132.0.10-cert-v01@openssh.com`, `eddsa-e382-shake256@libassh.org`, `eddsa-e521-shake256@libassh.org`, `null`, `pgp-sign-dss`, `pgp-sign-rsa`, `spki-sign-dss`, `spki-sign-rsa`, `ssh-dss-sha224@ssh.com`, `ssh-dss-sha384@ssh.com`, `ssh-dss-sha512@ssh.com`, `ssh-ed448-cert-v01@openssh.com`, `ssh-rsa-sha224@ssh.com`, `ssh-rsa-sha2-256`, `ssh-rsa-sha2-512`, `ssh-rsa-sha384@ssh.com`, `ssh-rsa-sha512@ssh.com`, `ssh-xmss-cert-v01@openssh.com`, `ssh-xmss@openssh.com`, `webauthn-sk-ecdsa-sha2-nistp256@openssh.com`, `x509v3-ecdsa-sha2-1.3.132.0.10`, `x509v3-sign-dss-sha1`, `x509v3-sign-dss-sha224@ssh.com`, `x509v3-sign-dss-sha256@ssh.com`, `x509v3-sign-dss-sha384@ssh.com`, `x509v3-sign-dss-sha512@ssh.com`, `x509v3-sign-rsa-sha1`, `x509v3-sign-rsa-sha224@ssh.com`, `x509v3-sign-rsa-sha384@ssh.com`, `x509v3-sign-rsa-sha512@ssh.com`. - Added 46 new key exchanges: `diffie-hellman-group14-sha224@ssh.com`, `diffie-hellman_group17-sha512`, `diffie-hellman-group-exchange-sha224@ssh.com`, `diffie-hellman-group-exchange-sha384@ssh.com`, `ecdh-sha2-1.2.840.10045.3.1.1`, `ecdh-sha2-1.2.840.10045.3.1.7`, `ecdh-sha2-1.3.132.0.1`, `ecdh-sha2-1.3.132.0.16`, `ecdh-sha2-1.3.132.0.26`, `ecdh-sha2-1.3.132.0.27`, `ecdh-sha2-1.3.132.0.33`, `ecdh-sha2-1.3.132.0.34`, `ecdh-sha2-1.3.132.0.35`, `ecdh-sha2-1.3.132.0.36`, `ecdh-sha2-1.3.132.0.37`, `ecdh-sha2-1.3.132.0.38`, `ecdh-sha2-4MHB+NBt3AlaSRQ7MnB4cg==`, `ecdh-sha2-5pPrSUQtIaTjUSt5VZNBjg==`, `ecdh-sha2-9UzNcgwTlEnSCECZa7V1mw==`, `ecdh-sha2-D3FefCjYoJ/kfXgAyLddYA==`, `ecdh-sha2-h/SsxnLCtRBh7I9ATyeB3A==`, `ecdh-sha2-m/FtSAmrV4j/Wy6RVUaK7A==`, `ecdh-sha2-mNVwCXAoS1HGmHpLvBC94w==`, `ecdh-sha2-qCbG5Cn/jjsZ7nBeR7EnOA==`, `ecdh-sha2-qcFQaMAMGhTziMT0z+Tuzw==`, `ecdh-sha2-VqBg4QRPjxx1EXZdV0GdWQ==`, `ecdh-sha2-wiRIU8TKjMZ418sMqlqtvQ==`, `ecdh-sha2-zD/b3hu/71952ArpUG4OjQ==`, `ecmqv-sha2`, `gss-13.3.132.0.10-sha256-*`, `gss-curve25519-sha256-*`, `gss-curve448-sha512-*`, `gss-gex-sha1-*`, `gss-gex-sha256-*`, `gss-group14-sha1-*`, `gss-group14-sha256-*`, `gss-group15-sha512-*`, `gss-group16-sha512-*`, `gss-group17-sha512-*`, `gss-group18-sha512-*`, `gss-group1-sha1-*`, `gss-nistp256-sha256-*`, `gss-nistp384-sha256-*`, `gss-nistp521-sha512-*`, `m383-sha384@libassh.org`, `m511-sha512@libassh.org`. - Added 28 new ciphers: `3des-cfb`, `3des-ecb`, `3des-ofb`, `blowfish-cfb`, `blowfish-ecb`, `blowfish-ofb`, `camellia128-cbc@openssh.org`, `camellia128-ctr@openssh.org`, `camellia192-cbc@openssh.org`, `camellia192-ctr@openssh.org`, `camellia256-cbc@openssh.org`, `camellia256-ctr@openssh.org`, `cast128-cfb`, `cast128-ecb`, `cast128-ofb`, `cast128-12-cbc@ssh.com`, `idea-cfb`, `idea-ecb`, `idea-ofb`, `rijndael-cbc@ssh.com`, `seed-ctr@ssh.com`, `serpent128-gcm@libassh.org`, `serpent256-gcm@libassh.org`, `twofish128-gcm@libassh.org`, `twofish256-gcm@libassh.org`, `twofish-cfb`, `twofish-ecb`, `twofish-ofb` - Added 5 new MACs: `hmac-sha1-96@openssh.com`, `hmac-sha224@ssh.com`, `hmac-sha256-2@ssh.com`, `hmac-sha384@ssh.com`, `hmac-whirlpool`. ### v2.5.0 (2021-08-26) - Fixed crash when running host key tests. - Handles server connection failures more gracefully. - Now prints JSON with indents when `-jj` is used (useful for debugging). - Added MD5 fingerprints to verbose output. - Added `-d`/`--debug` option for getting debugging output; credit [Adam Russell](https://github.com/thecliguy). - Updated JSON output to include MD5 fingerprints. Note that this results in a breaking change in the 'fingerprints' dictionary format. - Updated OpenSSH 8.1 (and earlier) policies to include `rsa-sha2-512` and `rsa-sha2-256`. - Added OpenSSH v8.6 & v8.7 policies. - Added 3 new key exchanges: `gss-gex-sha1-eipGX3TCiQSrx573bT1o1Q==`, `gss-group1-sha1-eipGX3TCiQSrx573bT1o1Q==`, and `gss-group14-sha1-eipGX3TCiQSrx573bT1o1Q==`. - Added 3 new MACs: `hmac-ripemd160-96`, `AEAD_AES_128_GCM`, and `AEAD_AES_256_GCM`. ### v2.4.0 (2021-02-23) - Added multi-threaded scanning support. - Added built-in Windows manual page (see `-m`/`--manual`); credit [Adam Russell](https://github.com/thecliguy). - Added version check for OpenSSH user enumeration (CVE-2018-15473). - Added deprecation note to host key types based on SHA-1. - Added extra warnings for SSHv1. - Added built-in hardened OpenSSH v8.5 policy. - Upgraded warnings to failures for host key types based on SHA-1. - Fixed crash when receiving unexpected response during host key test. - Fixed hang against older Cisco devices during host key test & gex test. - Fixed improper termination while scanning multiple targets when one target returns an error. - Dropped support for Python 3.5 (which reached EOL in Sept. 2020). - Added 1 new key exchange: `sntrup761x25519-sha512@openssh.com`. ### v2.3.1 (2020-10-28) - Now parses public key sizes for `rsa-sha2-256-cert-v01@openssh.com` and `rsa-sha2-512-cert-v01@openssh.com` host key types. - Flag `ssh-rsa-cert-v01@openssh.com` as a failure due to SHA-1 hash. - Fixed bug in recommendation output which suppressed some algorithms inappropriately. - Built-in policies now include CA key requirements (if certificates are in use). - Lookup function (`--lookup`) now performs case-insensitive lookups of similar algorithms; credit [Adam Russell](https://github.com/thecliguy). - Migrated pre-made policies from external files to internal database. - Split single 3,500 line script into many files (by class). - Added setup.py support; credit [Ganden Schaffner](https://github.com/gschaffner). - Added 1 new cipher: `des-cbc@ssh.com`. ### v2.3.0 (2020-09-27) - Added new policy auditing functionality to test adherence to a hardening guide/standard configuration (see `-L`/`--list-policies`, `-M`/`--make-policy` and `-P`/`--policy`). For an in-depth tutorial, see . - Created new man page (see `ssh-audit.1` file). - 1024-bit moduli upgraded from warnings to failures. - Many Python 2 code clean-ups, testing framework improvements, pylint & flake8 fixes, and mypy type comments; credit [Jürgen Gmach](https://github.com/jugmac00). - Added feature to look up algorithms in internal database (see `--lookup`); credit [Adam Russell](https://github.com/thecliguy). - Suppress recommendation of token host key types. - Added check for use-after-free vulnerability in PuTTY v0.73. - Added 11 new host key types: `ssh-rsa1`, `ssh-dss-sha256@ssh.com`, `ssh-gost2001`, `ssh-gost2012-256`, `ssh-gost2012-512`, `spki-sign-rsa`, `ssh-ed448`, `x509v3-ecdsa-sha2-nistp256`, `x509v3-ecdsa-sha2-nistp384`, `x509v3-ecdsa-sha2-nistp521`, `x509v3-rsa2048-sha256`. - Added 8 new key exchanges: `diffie-hellman-group1-sha256`, `kexAlgoCurve25519SHA256`, `Curve25519SHA256`, `gss-group14-sha256-`, `gss-group15-sha512-`, `gss-group16-sha512-`, `gss-nistp256-sha256-`, `gss-curve25519-sha256-`. - Added 5 new ciphers: `blowfish`, `AEAD_AES_128_GCM`, `AEAD_AES_256_GCM`, `crypticore128@ssh.com`, `seed-cbc@ssh.com`. - Added 3 new MACs: `chacha20-poly1305@openssh.com`, `hmac-sha3-224`, `crypticore-mac@ssh.com`. ### 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. - Added 10 new host key types: `ecdsa-sha2-1.3.132.0.10`, `x509v3-sign-dss`, `x509v3-sign-rsa`, `x509v3-sign-rsa-sha256@ssh.com`, `x509v3-ssh-dss`, `x509v3-ssh-rsa`, `sk-ecdsa-sha2-nistp256-cert-v01@openssh.com`, `sk-ecdsa-sha2-nistp256@openssh.com`, `sk-ssh-ed25519-cert-v01@openssh.com`, and `sk-ssh-ed25519@openssh.com`. - Added 18 new key exchanges: `diffie-hellman-group14-sha256@ssh.com`, `diffie-hellman-group15-sha256@ssh.com`, `diffie-hellman-group15-sha384@ssh.com`, `diffie-hellman-group16-sha384@ssh.com`, `diffie-hellman-group16-sha512@ssh.com`, `diffie-hellman-group18-sha512@ssh.com`, `ecdh-sha2-curve25519`, `ecdh-sha2-nistb233`, `ecdh-sha2-nistb409`, `ecdh-sha2-nistk163`, `ecdh-sha2-nistk233`, `ecdh-sha2-nistk283`, `ecdh-sha2-nistk409`, `ecdh-sha2-nistp192`, `ecdh-sha2-nistp224`, `ecdh-sha2-nistt571`, `gss-gex-sha1-`, and `gss-group1-sha1-`. - Added 9 new ciphers: `camellia128-cbc`, `camellia128-ctr`, `camellia192-cbc`, `camellia192-ctr`, `camellia256-cbc`, `camellia256-ctr`, `aes128-gcm`, `aes256-gcm`, and `chacha20-poly1305`. - Added 2 new MACs: `aes128-gcm` and `aes256-gcm`. ### v2.1.1 (2019-11-26) - Added 2 new host key types: `rsa-sha2-256-cert-v01@openssh.com`, `rsa-sha2-512-cert-v01@openssh.com`. - Added 2 new ciphers: `des`, `3des`. - Added 3 new PuTTY vulnerabilities. - During client testing, client IP address is now listed in output. ### v2.1.0 (2019-11-14) - Added client software auditing functionality (see `-c` / `--client-audit` option). - Added JSON output option (see `-j` / `--json` option; credit [Andreas Jaggi](https://github.com/x-way)). - Fixed crash while scanning Solaris Sun_SSH. - Added 9 new key exchanges: `gss-group1-sha1-toWM5Slw5Ew8Mqkay+al2g==`, `gss-gex-sha1-toWM5Slw5Ew8Mqkay+al2g==`, `gss-group14-sha1-`, `gss-group14-sha1-toWM5Slw5Ew8Mqkay+al2g==`, `gss-group14-sha256-toWM5Slw5Ew8Mqkay+al2g==`, `gss-group15-sha512-toWM5Slw5Ew8Mqkay+al2g==`, `diffie-hellman-group15-sha256`, `ecdh-sha2-1.3.132.0.10`, `curve448-sha512`. - Added 1 new host key type: `ecdsa-sha2-1.3.132.0.10`. - Added 4 new ciphers: `idea-cbc`, `serpent128-cbc`, `serpent192-cbc`, `serpent256-cbc`. - Added 6 new MACs: `hmac-sha2-256-96-etm@openssh.com`, `hmac-sha2-512-96-etm@openssh.com`, `hmac-ripemd`, `hmac-sha256-96@ssh.com`, `umac-32@openssh.com`, `umac-96@openssh.com`. ### v2.0.0 (2019-08-29) - Forked from https://github.com/arthepsy/ssh-audit (development was stalled, and developer went MIA). - Added RSA host key length test. - Added RSA certificate key length test. - Added Diffie-Hellman modulus size test. - Now outputs host key fingerprints for RSA and ED25519. - Added 5 new key exchanges: `sntrup4591761x25519-sha512@tinyssh.org`, `diffie-hellman-group-exchange-sha256@ssh.com`, `diffie-hellman-group-exchange-sha512@ssh.com`, `diffie-hellman-group16-sha256`, `diffie-hellman-group17-sha512`. - Added 3 new encryption algorithms: `des-cbc-ssh1`, `blowfish-ctr`, `twofish-ctr`. - Added 10 new MACs: `hmac-sha2-56`, `hmac-sha2-224`, `hmac-sha2-384`, `hmac-sha3-256`, `hmac-sha3-384`, `hmac-sha3-512`, `hmac-sha256`, `hmac-sha256@ssh.com`, `hmac-sha512`, `hmac-512@ssh.com`. - Added command line argument (`-t` / `--timeout`) for connection & reading timeouts. - Updated CVEs for libssh & Dropbear. ### v1.7.0 (2016-10-26) - implement options to allow specify IPv4/IPv6 usage and order of precedence - implement option to specify remote port (old behavior kept for compatibility) - add colors support for Microsoft Windows via optional colorama dependency - fix encoding and decoding issues, add tests, do not crash on encoding errors - use mypy-lang for static type checking and verify all code ### v1.6.0 (2016-10-14) - implement algorithm recommendations section (based on recognized software) - implement full libssh support (version history, algorithms, security, etc) - fix SSH-1.99 banner recognition and version comparison functionality - do not output empty algorithms (happens for misconfigured servers) - make consistent output for Python 3.x versions - add a lot more tests (conf, banner, software, SSH1/SSH2, output, etc) - use Travis CI to test for multiple Python versions (2.6-3.5, pypy, pypy3) ### v1.5.0 (2016-09-20) - create security section for related security information - match and output assigned CVE list and security issues for Dropbear SSH - implement full SSH1 support with fingerprint information - automatically fallback to SSH1 on protocol mismatch - add new options to force SSH1 or SSH2 (both allowed by default) - parse banner information and convert it to specific software and OS version - do not use padding in batch mode - several fixes (Cisco sshd, rare hangs, error handling, etc) ### v1.0.20160902 - implement batch output option - implement minimum output level option - fix compatibility with Python 2.6 ### v1.0.20160812 - implement SSH version compatibility feature - fix wrong mac algorithm warning - fix Dropbear SSH version typo - parse pre-banner header - better errors handling ### v1.0.20160803 - use OpenSSH 7.3 banner - add new key-exchange algorithms ### v1.0.20160207 - use OpenSSH 7.2 banner - additional warnings for OpenSSH 7.2 - fix OpenSSH 7.0 failure messages - add rijndael-cbc failure message from OpenSSH 6.7 ### v1.0.20160105 - multiple additional warnings - support for none algorithm - better compression handling - ensure reading enough data (fixes few Linux SSH) ### v1.0.20151230 - Dropbear SSH support ### v1.0.20151223 - initial version