install

Additional install commands

macOS

Homebrewverified · 100%

brew install ssh-mitm

local Homebrew formula metadata

Linux

Nixverified · 92%

nix profile install nixpkgs#ssh-mitm

nixpkgs package indexes · pkgs/by-name/ss/ssh-mitm/package.nix · source: api.github.com

overview

Package summary

SSH server for security audits and malware analysis

Project links

Commands and aliases

ssh-mitm
ssh-mitm-askpass

history

Project history and usage

SSH-MITM is an interactive SSH interception tool for authorized security audits, penetration testing, training labs, and malware-analysis environments. Its package-manager relevance comes from making a specialized man-in-the-middle SSH audit workflow installable as a normal CLI rather than as a one-off lab script.

Project history

The project presents itself as an active security research tool rather than a general-purpose SSH server. Its documentation says it was originally developed to study SSH client behavior and authentication weaknesses, especially the ambiguity around FIDO2 hardware-token confirmations in man-in-the-middle scenarios.

Adoption history

The official README advertises multiple distribution channels, including AppImage, Flatpak, Snap, pip, and direct installation from GitHub. Homebrew and Nix packaging in the input show that it also entered package-manager catalogs used by security engineers who want reproducible CLI installs.

How it is used

Typical use places SSH-MITM between a client and a target SSH server, then runs commands such as `ssh-mitm server --remote-host <target-host>` and has a test client connect through the interception port. The tool can capture authentication, mirror live sessions, inspect or alter SFTP/SCP transfers, intercept port forwarding, and run audit plugins.

Why package nerds care

Package nerds care because SSH-MITM turns SSH protocol research into an installable command with extras such as tutorials, plugins, AppImage and desktop packaging, and documented CVE-driven audit workflows. It sits at the edge of package-manager culture where offensive security labs, training images, and repeatable toolchains meet.

Timeline

2021: SSH-MITM research documented trivial-authentication CVEs affecting multiple SSH clients.
2022: The project documented follow-up CVEs related to the same SSH authentication research area.
2025: The changelog documents expansion into tutorials, plugin browsing, MOSH and PowerShell remoting interception, persistent host keys, and Terrapin detection improvements.

Related projects

SSH-MITM is closely related to OpenSSH, Paramiko, MOSH, SCP/SFTP clients, and SSH client vulnerability research. It is complementary to scanners and audit tools because it observes and manipulates live SSH sessions rather than only checking static configuration.

Sources

security posture

Risk level: red

broad file, network, media, or database tool signal. escape, surveillance, or offensive capability signal.

Risk classifier

red risk · medium confidence · escape-surveillance-offensive

Why

broad file, network, media, or database tool signal
escape, surveillance, or offensive capability signal

Signals

text:mitm
text:ssh,server

Install behavior

No Homebrew post-install hook is recorded in formula metadata.
Homebrew bottle metadata is available for 6 platform targets.
Installs with 4 runtime dependencies.
Build metadata lists 2 build dependencies.

Recommended review

Before unattended agent use, check whether the tool reads plaintext credentials, writes remote state, publishes artifacts, or shells out to plugins.

executables

Installed executables

Command	Kind	Exposure	Note
`ssh-mitm`	cli	global executable
`ssh-mitm-askpass`	cli	global executable

freshness

Version and freshness

These signals separate page generation age, package-manager activity, and upstream release comparison. Version lag is warned only when an evidence URL and comparable versions are present.

page generated2026-07-08

manager version5.0.1

manager updated2026-04-21

local dataok

upstreamnot checked

latest detectednot detected

https://docs.ssh-mitm.at

infoRelease/tag comparison is only available for GitHub repositories.https://docs.ssh-mitm.atnone confidence

install metadata

Package metadata

Package key	brew:ssh-mitm
Version	5.0.1
Package manager	Homebrew
Package manager page	https://formulae.brew.sh/formula/ssh-mitm
Homepage	https://docs.ssh-mitm.at
Repository	https://github.com/ssh-mitm/ssh-mitm
Upstream docs	https://docs.ssh-mitm.at/
License	GPL-3.0-only
Source archive	https://files.pythonhosted.org/packages/f0/4e/c804d08c336bcff29fd665fdc3ff9d3698d529b1d75462b89bc53527862a/ssh_mitm-5.0.1.tar.gz
Last updated	2026-04-21T12:10:04-07:00
Pulse	updated
Dependencies	cryptography, libsodium, libyaml, python@3.14
Build dependencies	pkgconf, rust
Bottle	available (on arm64_linux, arm64_sequoia, arm64_sonoma, arm64_tahoe, sonoma, x86_64_linux)
Homebrew post-install	not defined
Service	none declared

registry facts

Source database details

Source Database	Homebrew formula API
Tap	homebrew/core
Full Name	ssh-mitm
Version Scheme	0
Revision	4
Head Version	HEAD
Bottle Stable Root URL	https://ghcr.io/v2/homebrew/core
Deprecated	no
Disabled	no
Keg Only	no
URL Keys	head stable

source database matches

Other package-manager records

Matches are pulled from external package-manager indexes and kept separate from local Automic Vault package links.

Nix95%

ssh-mitm

nix profile install nixpkgs#ssh-mitm

normalized package name match
Matched by: Ssh Mitm

nixpkgs package indexes · api.github.com · nixpkgs package indexes: pkgs/by-name/ss/ssh-mitm/package.nix from https://api.github.com/repos/NixOS/nixpkgs/git/trees/master?recursive=1

package graph

Links come from deterministic package relationships, av.db category and tag curation, ecosystem matches, and package hub membership.

source trail

Generated from repository data

This page is generated by av-web from the private package SQLite artifact built by scripts/generate-pkg-sqlite.py.

Combined YAML source

View the package source record on GitHub.

combined/ssh-mitm.yml

Used sources

Geiger risk classifier
Nucleus package database
av.db category and tag curation
cross-ecosystem install command graph
curated package history
external package-manager database matches
package relationship graph
package version freshness
package-page enrichment

Install ssh-mitm with Homebrew, Nix