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ssh-audit

ssh-audit is a tool for ssh server auditing.

Features

  • grab banner, detect ssh1 protocol and zlib compression;
  • gather key-exchange, host-key, encryption and message authentication code algorithms;
  • output algorithm information (available since, removed/disabled, unsafe/weak/legacy, etc);
  • analyze SSH version compatibility based on algorithm information;
  • historical information from OpenSSH and Dropbear SSH;
  • no dependencies, compatible with python2 and python3;

Usage

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

   -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.

example

screenshot

ChangeLog

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