SSH Server Auditing - ssh-audit

ssh-audit is a tool for ssh server auditing.

Features

• SSH1 and SSH2 protocol server support;
• 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;
• no dependencies, compatible with Python 2.6+, Python 3.x and PyPy;

Usage

usage: ssh-audit.py [-bnv] [-l <level>] <host[:port]>

   -1,  --ssh1             force ssh version 1 only
   -2,  --ssh2             force ssh version 2 only
   -b,  --batch            batch output
   -n,  --no-colors        disable colors
   -v,  --verbose          verbose output
   -l,  --level=<level>    minimum output level (info|warn|fail)

• 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. 

ChangeLog

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 sofware 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
  

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