Company email password

Description

General

The company email password detector aims at catching any pair of company email/password containing a sensitive email that could endanger a company's security.

This statement is pretty wide, therefore to avoid raising many false alerts, GitGuardian has come up with a range of validation steps and specifications to refine the perimeter to look at.

Specifications

The two components of the couple that the detector catches are referred as username and password, and should be at a reasonable distance from each other inside a document to be flagged.
This detector will only flag the closest couple of matches.

For this detector, each element must follow a specific set of rules to be considered as sensitive and therefore valid:

For both matches:

• Must be an assigned value, namely of the form {assigned_variable} {assignment_token} {value}, where {assigned_variable} is either username, password, or other similar strings.

username:

• The document must contain the string email or user (see whitelist hereunder).
• Caught emails must be company related to be sensitive. Therefore, common personal email providers are banned such as gmail.com or non-sensitive aliases such as no_reply addresses (see banlist hereunder).

password:

• The document must contain the string pass (see whitelist hereunder).
• Set of rules to filter irrelevant passwords such as password or when the password is an url, date, or file name (see banlist hereunder).

Revoke the secret

This detector catches generic credentials, hence GitGuardian cannot infer the concerned service. To properly revoke the credentials :

1. Understand what service is impacted.
2. Refer to the corresponding documentation to know how to revoke and rotate the credentials.

Examples

Examples that WILL be caught

- text: |
    email=some.french.name@gitguardian.com
    password=abuaoentsubaoeub24234$@3!
  username: some.french.name@gitguardian.com
  password: abuaoentsubaoeub24234$@3!

- text: |
    user=whatever@gitguardian.com
    pass=th1slsth3b3stp@$$w0rdw3c0uidc@m3upwlth
  username: whatever@gitguardian.com
  password: th1slsth3b3stp@$$w0rdw3c0uidc@m3upwlth

Examples that WILL NOT be caught

• The email address is not sensitive (gmail.com).

- text: |
    email=some.french.name@gmail.com
    password=abuaoentsubaoeub24234$@3!

• The password is an url.

- text: |
    user=whatever@gitguardian.com
    pass=www.google.com

Details for Company email password

• High Recall: False

• Validity Check: False

• Minimum Number of Matches: 2

• Occurrences found for one million commits: 190

• Prefixed: False

• PreValidators:

- type: FilenameBanlistPreValidator
  banlist_extensions: ['gzip']
  banlist_filenames: ['(?i:fixture)', '(?i:test)', '(?i:seed)']
  check_binaries: False
- type: ContentWhitelistPreValidator
  patterns:
    - email
    - user
- type: ContentWhitelistPreValidator
  patterns:
    - pass

• PostValidators

password:
  - type: CommonValueBanlistPostValidator
  - type: CommonPasswordBanlistPostValidator
  - type: ValueBanlistPostValidator
    patterns:
      - ^none
      - ^null
      - ^empty
      - ^user
      - pass
      - senha # password in portuguese
      - ^root
      - ^admin
      - ^true
      - ^and
      - ^prompt
      - ^final$
      - ^string$
      - ^self
      - ^email
      - ^raw
      - ^your
      - ^new$
      - ^temp$
      - ^function$
      - ^undefined$
      - ^auth_email$
      - ^false$
      - ^request$
      - test
      - ^req$
      - '1234'
      - ^#
      - ^vault
      - ^value$
      - ^java
      - ^ansible
      - ^demo
      - '123213123'
      - ^guest
      - ^visit$
      - ^coffee123$
      - ^123bla456bla$
      - ^description$
      - '^\$(1|2|sha1|5|6|2(a|b|x|y))\$[0-9]{1,2}\$' # https://en.wikipedia.org/wiki/Bcrypt
      - '^pbkdf2_sha256\$' # hashed password
      - '^aqaaaaeaaccqaaaae' # hashed password
      - ^DateTime$
      - ^CompanyEmail$
      - ^string
      - ^equalTo$
      - ^Content-Type$
      - ^Role\.User$
      - ^e\.target\.value$
      - ^temp@123$
      - \.find_element_by_css$
      - ^process\.env\.
      - ^get\-content$
      - ^encodingutils\.sha256
      - '\*{7}'
      - ^[~^]?[0-9]+\.[0-9]+\.[0-9]+$
      - ^[^a-z0-9]+$
  - type: EntropyPostValidator
    entropy: 1
  - type: HeuristicPostValidator
    filters:
      - url
      - date
      - file_name
  - type: DictFilterPostValidator
    threshold_words_pct_matched: 1
  - type: ContextWindowBanlistPostValidator
    patterns:
      [
        'passenger',
        'pgadmin',
        'mango',
        'redis',
        'postgres',
        'hash',
        'crypt',
        'passed:',
      ]
    window_width: 25
    window_type: 'left'
  - type: AssignmentBanlistPostValidator
    patterns:
      - ^(?-i:[a-zA-Z0-9]{1,3}[A-Z0-9](Pwd|PWd|PwD|pWD|pWd|pwD))$
      - salt

username:
  - type: EmailDomainBanlistPostValidator
    additionnal_banned_domains:
      # non-exhaustive list of email provider and their domains
      # google
      - gmail.com
      # microsoft
      - outlook.com
      - outlook.fr
      - hotmail.fr
      - hotmail.ca
      - hotmail.de
      - hotmail.gr
      - hotmail.com
      - hotmail.co.uk
      - outlook.com.tr
      - outlook.com.br
      - live.fr
      - live.in
      - live.dk
      - live.de
      - live.cn
      - live.com
      - live.co.uk
      - live.com.ar
      - live.com.mx
      - live.com.ar
      - live.com.pt
      - msn.com
      # yahoo
      - yahoo.com
      - yahoo.fr
      - yahoo.es
      - yahoo.it
      - yahoo.co.uk
      - yahoo.co.jp
      - yahoo.com.tw
      - yahoo.com.br
      - yahoo.com.hk
      - ymail.com
      - rocketmail.com
        # chinese email provider
      - qq.com
      - 163.com
      - 126.com
      # apple
      - me.com
      - icloud.com
      # yandex
      - yandex.ru
      - yandex.com
      # GMX
      - gmx.com
      - gmx.fr
      - gmx.us
      - caramail.fr
      - caramail.com
      # disposable mail
      - yopmail.com
      - mailinator.com
      # others
      - orange.fr
      - mail.com
      - mail.ru
      - naver.com
      - aol.com
      - protonmail.com
      - foxmail.com
      - chmail.ir
      # test domain
      - something.com
      - abc.com
      - pgadmin.org
      - emailaccount.com
      - person.com

  - type: CommonValueBanlistPostValidator
  - type: ValueBanlistPostValidator
    patterns:
      - ^none
      - ^null
      - ^empty
      - ^user
      - ^pass
      - ^root
      - ^admin
      - ^true
      - ^and
      - ^prompt
      - '@\.*local'
      - ^self
      - ^email
      - ^raw
      - ^your
      - ^random
      - ^info
      - ^bla
      - ^support
      - ^vault
      - test
      - sample
      - dummy
      - no[_.-]reply
      - ghost
      - abcdef
      - noaddressemail
      - noreply
      - contact-email
      - fake
      - ^xxx
      - ^wolf@thedoor.com$
      - ^company@company.com$
      - ^john@doe
      - ^temp@temp
      - ^google@google
      - ^foo@
      - ^ex[ae]mpl
      - ^me@
      - ^foo@bar
      - ^abc@
      - \.demo$
      - \.abc$
      - \.za$
      - \.baz$
      - \.nya$
      - \.tld$

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