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https://github.com/rfc-st/humble

A humble, and 𝗳𝗮𝘀𝘁, security-oriented HTTP headers analyzer.
https://github.com/rfc-st/humble

analysis checklist cybersecurity header-parser headers http infosec kali-linux owasp python3 security security-audit security-scanner security-tools

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A humble, and 𝗳𝗮𝘀𝘁, security-oriented HTTP headers analyzer.

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humble


A humble, and fast, security-oriented HTTP headers analyzer
























A quick analysis with 'humble'!




"千里之行,始於足下 - 老子"


("A journey of a thousand miles begins with a single step. - Lao Tzu")




"And if you don't keep your feet, there's no knowing where you might be swept off to. - Bilbo Baggins"



### Table of contents

[Features](#features)

[Screenshots](#screenshots)

[Installation & Update](#installation--update)

[Installation & Maintenance (Docker)](#installation--maintenance-docker)

[Usage](#usage)

[Advanced Usage](#advanced-usage)

[Checks: Missing Headers](#checks-missing-headers)

[Checks: Fingerprint Headers](#checks-fingerprint-headers)

[Checks: Deprecated Headers and Insecure Values](#checks-deprecated-headersprotocols-and-insecure-values)

[Checks: Empty Values](#checks-empty-values)

[Guidelines included](#guidelines-included-to-enable-security-http-headers)

[To-Do](#to-do)

[Further Reading](#further-reading)

[Contribute](#contribute)

[Acknowledgements](#acknowledgements)

[License](#license)


## Features

:heavy_check_mark: 24 [checks](#checks-security-headers) for security HTTP response headers.

:heavy_check_mark: 14 [checks](#checks-missing-headers) for missing HTTP response headers (the ones I consider essential).

:heavy_check_mark: 1186 [checks](#checks-fingerprint-headers) for fingerprinting through HTTP response headers.

:heavy_check_mark: 113 [checks](#checks-deprecated-headersprotocols-and-insecure-values) for deprecated HTTP response headers/protocols or with insecure/wrong values.

:heavy_check_mark: SSL/TLS checks: requires the **amazing** https://testssl.sh/.

:heavy_check_mark: Browser support references for enabled HTTP security headers: provided by https://caniuse.com/.

:heavy_check_mark: Two types of analysis: brief and detailed, along with HTTP response headers.

:heavy_check_mark: Can exclude specific HTTP response headers from the analysis.

:heavy_check_mark: Can export each analysis to CSV, HTML5, JSON, PDF 1.4 and TXT (and in a filename and path of your choice).

:heavy_check_mark: Can analyze '_raw response files_': text files with HTTP response headers and values. Ex: curl option '--dump-header'.

:heavy_check_mark: Highlights
experimental headers in each analysis.

:heavy_check_mark: Each detailed analysis may include up to dozens of official links, references and technical articles.

:heavy_check_mark: l10n: can display each analysis, the messages and almost all errors in English or Spanish.

:heavy_check_mark: Saves each analysis, showing at the end the improvements or deficiencies in relation to the last one.

:heavy_check_mark: Can display analysis statistics: either against a specific URL or all of them.

:heavy_check_mark: Can display fingerprint statistics: either against a specific term or the Top 20.

:heavy_check_mark: Code reviewed via
Bandit, Flake8, pyinstrument, SonarLint, Sourcery and vermin.

:heavy_check_mark: Tested, one by one, on thousands of URLs.

:heavy_check_mark: Tested on Docker 26.1, Kali Linux 2021.1, macOS 14.2.1 and Windows 10 20H2.

:heavy_check_mark:
Almost all the code under one of the most permissive licenses: MIT.

:heavy_check_mark: Regularly
updated.

:heavy_check_mark: Minimal dependencies required.

:heavy_check_mark: Featured on Artemis, DefectDojo, HackTricks, Kali Linux and OWASP.

:heavy_check_mark: Developed entirely in my spare time, no strings attached: feel free to try it out and integrate it into your projects!.

:heavy_check_mark: And with the approval of several AI :smile:!.

## Screenshots

.: (Windows) - Brief analysis.



(Windows) - Brief analysis




.: (Linux) - Brief analysis along with HTTP response headers.



(Linux) - Brief analysis along with HTTP response headers




.: (Linux) - Detailed analysis, in Spanish.



(Linux) - Detailed analysis in Spanish




.: (Linux) - Analysis of a "raw response file". Example.



(Linux) - Analysis of a raw response file




.: (Linux) - SSL/TLS checks.

```bash
Options used: -f -g -p -U -s --hints
```



(Linux) - SSL/TLS checks (requires https://testssl.sh/ and Linux/Unix client)




.: (Linux) - List of HTTP fingerprint headers based on a specific term.



(Linux) - List of HTTP fingerprint headers based on a specific term




.: (Linux) - Brief analysis saved as CSV. Example.



(Linux) - Brief analysis saved as CSV




.: (Windows) - Detailed analysis saved as PDF. Example.



(Windows) - Detailed analysis saved as PDF




.: (Linux) - Detailed analysis saved as HTML. Example.



(Linux) - Detailed analysis saved as HTML




.: (Linux) - Brief analysis saved as JSON. Example.



(Linux) - Brief analysis saved as JSON




.: (Linux) - Analysis history file: Date, URL, Missing, Fingerprint, Deprecated/Insecure, Empty headers & Total warnings (the four previous totals).



(Linux) - Analysis history file: Date, URL, Missing, Fingerprint, Deprecated/Insecure, Empty headers & Total warnings (the four previous totals)




.: (Linux) - Statistics of the analysis performed against a specific URL.



(Linux) - Statistics of the analysis performed against a specific URL




.: (Linux) - Statistics of the analysis performed against all URLs, in Spanish.



(Linux) - Statistics of the analysis performed against all URLs in Spanish



## Installation & update

> [!NOTE]
> Python 3.8 or higher is required.

```bash
# Requirements: python3 and python3-pip
(Windows) https://www.python.org/downloads/windows/
(Linux) if not installed by default, install them via, e.g. Synaptic, apt, dnf, yum ...
(macOS) https://www.python.org/downloads/macos/

# Requirement: Git
(Windows) https://git-scm.com/download/win
(Linux) https://git-scm.com/download/linux
(macOS) https://git-scm.com/download/mac

# Setting up a virtual environment in Python (pending how to do it in Windows)
Note: '/home/bluesman/humble_venv' is a example path for the virtual environment.

$ python3 -m venv /home/bluesman/humble_venv
$ source /home/bluesman/humble_venv/bin/activate
$ cd /home/bluesman/humble_venv/
$ git clone https://github.com/rfc-st/humble.git
$ cd humble
$ pip3 install -r requirements.txt

# Good practice: deactivate the virtual environment after you have finished using 'humble'
$ deactivate

# Activate the virtual environment to analyze URLs again with 'humble'
$ cd /home/bluesman/humble_venv/
$ source /home/bluesman/humble_venv/bin/activate
$ cd humble

# Updating (weekly): activate the virtual environment and from 'humble' folder
$ git pull

# Updating (Release): activate the virtual environment, download the source code
# .zip file of the most recent Asset and unzip it in the 'humble' folder, overwriting files.
https://github.com/rfc-st/humble/releases
```

## Installation & maintenance (Docker)

> [!NOTE]
> Python 3.8 will be used to [build](https://github.com/rfc-st/humble/blob/master/Dockerfile) the image.

```bash
# Install Docker, and make sure it's running.
# E.g. (Linux): https://www.kali.org/docs/containers/installing-docker-on-kali/
# E.g. (macOs): https://docs.docker.com/desktop/install/mac-install/
# E.g. (Windows): https://docs.docker.com/desktop/install/windows-install/

# Build the image, providing the TAG as the latest Release of 'humble': '1.42' in this example.
# https://github.com/rfc-st/humble/releases
# (Windows may require elevated console privileges)
$ docker build -t humble:1.42 .

# Run the analysis specifying the above TAG, along with the specific options for 'humble'.
# '-it', required: allocate a pseudo-TTY and keep the input interactive
# '-rm', required: automatically remove the container and associated anonymous volumes when it exits

# (Linux/macOS)
$ docker run -it --rm --name humble humble:1.42 /bin/bash -c "python3 humble.py -u https://facebook.com -b"

# (Windows)
$ docker run -it --rm --name humble humble:1.42 python3 humble.py -u https://facebook.com -b

# Removing (and untagging) previous images of 'humble' after upgrading to the latest release.
$ docker rmi humble:1.42
```

## Usage

```console
(Windows) $ py humble.py
(Linux) $ python3 humble.py
(macOS) $ python3 humble.py

usage: humble.py [-h] [-a] [-b] [-df] [-e [TESTSSL_PATH]] [-f [FINGERPRINT_TERM]] [-g] [-grd] [-if INPUT_FILE] [-l {es}] [-lic] [-o {csv,html,json,pdf,txt}] [-of OUTPUT_FILE]
[-op OUTPUT_PATH] [-r] [-s [SKIP_HEADERS ...]] [-u URL] [-ua USER_AGENT] [-v]

'humble' (HTTP Headers Analyzer) | https://github.com/rfc-st/humble | v.2024-11-01

options:
-h, --help show this help message and exit
-a Shows statistics of the performed analysis; if the '-u' parameter is ommited they will be global
-b Shows overall findings; if omitted detailed ones will be shown
-df Do not follow redirects; if omitted the last redirection will be the one analyzed
-e [TESTSSL_PATH] Shows TLS/SSL checks; requires the PATH of https://testssl.sh/
-f [FINGERPRINT_TERM] Shows fingerprint statistics; if 'FINGERPRINT_TERM' (e.g., 'Google') is omitted the top 20 results will be shown
-g Shows guidelines for enabling security HTTP response headers on popular servers/services
-grd Shows the checks to grade an analysis, along with advice for improvement
-if INPUT_FILE Analyzes 'INPUT_FILE': must contain HTTP response headers and values separated by ': '; E.g. 'server: nginx'.
-l {es} Defines the language for displaying analysis, errors and messages; if omitted, will be shown in English
-lic Shows the license for 'humble', along with permissions, limitations and conditions.
-o {csv,html,json,pdf,txt} Exports analysis to 'humble_scheme_URL_port_yyyymmdd_hhmmss_language.ext' file; csv/json will have a brief analysis
-of OUTPUT_FILE Exports analysis to 'OUTPUT_FILE'; if omitted the default filename of the parameter '-o' will be used
-op OUTPUT_PATH Exports analysis to 'OUTPUT_PATH'; must be absolute. If omitted the PATH of 'humble.py' will be used
-r Shows HTTP response headers and a detailed analysis; '-b' parameter will take priority
-s [SKIP_HEADERS ...] Skips 'deprecated/insecure' and 'missing' checks for the indicated 'SKIP_HEADERS' (separated by spaces)
-u URL Scheme, host and port to analyze. E.g. https://google.com
-ua USER_AGENT User-Agent ID from 'additional/user_agents.txt' file to use. '0' will show all and '1' is the default
-v, --version Checks for updates at https://github.com/rfc-st/humble

examples:
-u URL -a Shows statistics of the analysis performed against the URL
-u URL -b Analyzes URL and reports overall findings
-u URL -b -o csv Analyzes URL and exports overall findings to CSV format
-u URL -l es Analyzes URL and reports (in Spanish) detailed findings
-u URL -o pdf Analyzes URL and exports detailed findings to PDF format
-u URL -o html -of test Analyzes URL and exports detailed findings to HTML format and 'test' filename
-u URL -o pdf -op D:/Tests Analyzes URL and exports detailed findings to PDF format and 'D:/Tests' path
-u URL -r Analyzes URL and reports detailed findings along with HTTP response headers
-u URL -s ETag NEL Analyzes URL and skips 'deprecated/insecure' and 'missing' checks for 'ETag' and 'NEL' headers
-u URL -ua 4 Analyzes URL using the fourth User-Agent of 'additional/user_agents.txt' file
-a -l es Shows statistics (in Spanish) of the analysis performed against all URLs
-f Google Shows HTTP fingerprint headers related to the term 'Google'
```

## Advanced usage

.: (Linux) - Show only the analysis summary.

```
$ python3 humble.py -u https://www.spacex.com | grep -A 8 "\!." | sed $'1i \n'
```
Show only the analysis summary (Linux)

.: (Windows) - Show only the analysis summary, in Spanish. PowerShell >= 7 required.

```
$ py humble.py -u https://www.spacex.com -l es | Select-String -Pattern '!.' -Context 1,8 -NoEmphasis
```
Show only the analysis summary (Windows, in Spanish. PowerShell >= 7 required)

.: (Linux) - Show only the URL, date and analysis summary.

```
$ python3 humble.py -u https://www.spacex.com | grep -A7 -E "0. Info|\!." | grep -v "^\[1\." | sed 's/[--]//g' | sed -e '/./b' -e :n -e 'N;s/\n$//;tn' | sed $'1i \n'
```
Show URL, date and the analysis summary (Linux)

.: (Linux) - Show only the deprecated headers/protocols and insecure values.

```
$ python3 humble.py -u https://www.spacex.com | sed -n '/\[3/,/^\[4/ { /^\[4/!p }' | sed '$d' | sed $'1i \n'
```
Show only the deprecated headers/protocols and insecure values (Linux)

.: (Linux) - Check for HTTP client errors (4XX).

```
$ python3 humble.py -u https://my.prelude.software/demo/index.pl | grep -A1 -B5 'Note : \|Nota : ' --color=never
```
Check for HTTP client errors (4XX) (Linux)

.: (Linux) - Analyze multiple URLs and save the results as PDFs.

```
$ datasets=('https://facebook.com' 'https://github.com' 'https://www.spacex.com'); for dataset in "${datasets[@]}"; do python3 humble.py -u "$dataset" -o pdf; done
```
Analyze multiple URLs and save the results as PDFs

## Checks: security headers

Check this file.

## Checks: missing headers

Check this file.

## Checks: fingerprint headers

Check this file.

## Checks: deprecated headers/protocols and insecure values

Check this file.
> [!NOTE]
> _humble_ tries to be **strict**: both in checking HTTP response headers and their values; some of these headers may be experimental and you may not agree with all the results after analysis.
>
> And that's **OK**! :smiley:; you should **never** blindly trust the results of security tools: there should be further work to decide whether the risk is non-existent, potential or real depending on the analyzed URL (its exposure, environment, etc).

## Checks: empty values

Any HTTP response header.

## Guidelines included to enable security HTTP headers
* Amazon Web Services
* Apache HTTP Server
* Cloudflare
* LiteSpeed Web Server
* Microsoft Internet Information Services
* Nginx
* Node.js
* WordPress

## To-Do
- [ ] Add more Header/Value checks (only security-oriented)
- [ ] A new detailed analysis of all CSP directives/values (W3C Level 2 & 3)
- [ ] Google Style Python Docstrings and documentation via Sphinx

## Further reading

https://caniuse.com/

https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers

https://github.com/search?q=http+headers+analyze

https://github.com/search?q=http+headers+secure

https://github.com/search?q=http+headers+security

https://owasp.org/www-project-secure-headers/

https://securityheaders.com/

https://scotthelme.co.uk/

https://webtechsurvey.com/common-response-headers

https://www.w3.org

## Contribute
* Read this first!.
* Report a Bug.
* Create a Feature request.
* Report a Security Vulnerability.
* Send me your suggestions: [email protected]
* Or use that email to tell me about integrations of this tool in others!
* And to recommend me a good Blues! :sunglasses:

Thanks for downloading _'humble'_, for trying it and for your time!.

## Acknowledgements
* Bandit, colorama, Flake8, fpdf2, pyinstrument, requests, SonarLint, Sourcery, testssl.sh, tldextract and Vermin authors/teams: you rock :metal:!.
* Aniket Navlur for this gem.
* Azathothas for reporting this bug.
* bulaktm for this suggestion.
* confuciussayuhm for this suggestion.
* cr4zyfish for some of these suggestions.
* danterolle for this.
* David for believing in the usefulness of this tool.
* Eduardo for the first Demo and the example "(Linux) - Analyze multiple URLs and save the results as PDFs".
* gl4nce for this suggestion.
* İDRİS BUDAK for reporting the need to this check.
* Julio for testing on macOS.
* kazet for this suggestion.
* manuel-sommer for this, this and this!.
* MikeAnast for several suggestions.
* n3bojs4, ehlewis and dkadev for this and this.
* sophie for keeping 'humble' updated in Kali Linux and for this.
* stanley101music for this, this and this!.
* vincentcox for this and this.

## License

MIT © 2020-2024 Rafa 'Bluesman' Faura ([email protected])

Original Creator - Rafa 'Bluesman' Faura ([email protected])