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Overview

It's a significant risk in the software development environment – any user can check in sensitive information such as passwords, public keys, access keys, etc., in cleartext, right into a git repository.

Bitbucket doesn’t catch that. It has no built-in mechanism to detect and block a commit that contains sensitive credentials that could fall into the wrong hands; the typical developer workflows make this an all-too-easy omission even by well intentioned users.

This poses an enormous security risk as this information could be passwords for network devices, private keys, or even personal credentials for highly sensitive systems. This can lead to privilege escalation, either by malicious users who have network access to the Bitbucket server, or by an external attacker who has bridged perimeter security.

Our application integrates with Bitbucket to actively detect and block attempts to check in sensitive information, accidental or otherwise.

Modes of Operation

Security for Bitbucket scanning can be triggered two ways:

  • A pre-receive hook can scan all code being pushed into Bitbucket, as described here. Code with potentially vulnerable content can be blocked, or simply produce a warning.

  • Full-content scans can be triggered on a per-repository or global basis, and can produce reports which can be exported.

Scan customization

Security for Bitbucket scanning can be customized in a few different ways:

Supported Secrets & Keys

List of current vulnerabilities that are detected by Soteri.

Rule Name

Description

AWS_CLIENT_ID

AWS Identity and Access Management Client IDs uniquely reference users, access keys. These unique IDs can provide access to your AWS instance by allowing users to get keys.

AWS_MWS_KEY

AWS Marketplace Web Service API Keys allow programmatic interfaces to Amazon Seller stores.

AWS_SECRET_ACCESS_KEY

AWS Secret Access Keys allow for authenticated AWS CLI, SDK, and API access.

AZURE_ACCESS_KEY

Azure Access Keys provide access to all data stored in Microsoft Azure.

DYNATRACE_CLIENT_SECRET

Dynatrace Client Secrets allow for access to your Dynatrace instance API.

EC_PRIVATE_KEY

Elliptical Curve Private Keys - We detect many common SSH Private Key formats.

FACEBOOK_CLIENT_ID

Facebook Application IDs

FACEBOOK_SECRET_KEY

Facebook Application Secrets

GENERIC_API_KEY

Generic API Key - Contains logic to detect generic API Keys.

GENERIC_PASSWORD

Generic Passwords - Contains logic to detect generic passwords. Note that this rule may generate many false positives, and is disabled by default.

GENERIC_SECRET

Generic Secrets - Contains logic to detect generic secrets.

GITHUB_KEY

Github Authentication Tokens - This rule detects Github Authentication Tokens for personal use as well as for Github Application OAuth.

GOOGLE_API_KEY

Google API Keys

GOOGLE_OAUTH

Google OAuth URLs

GOOGLE_OAUTH_ACCESS_TOKEN

Google OAuth Tokens

HEROKU_API_KEY

Heroku API Keys

LINKEDIN_CLIENT_ID

LinkedIn Client IDs

LINKEDIN_CLIENT_SECRET

LinkedIn Client Secrets

MAILCHIMP_API_KEY

Mailchimp API Key

MAILGUN_API_KEY

Mailgun API Key

PASSWORD_IN_URL

Generic Password in URL - Contains logic to detect passwords embedded in URLs

PAYPAL_BRAINTREE_ACCESS_TOKEN

Paypal's Braintree Access Token

PGP_PRIVATE_KEY

PGP Private Keys

PKCS8_PRIVATE_KEY

PKSC8 Private Keys - We detect many common SSH Private Key formats.

PYPI_UPLOAD_TOKEN

Python Package Index (PyPI) Upload Tokens allow verified publishing of python package to the global repository.

RSA_PRIVATE_KEY

We detect many common SSH Private Key formats.

SENDGRID_API_KEY

Sendgrid API Keys

SHOPIFY_PARTNER_API_ACCESS_TOKEN

Shopify Partner API access Tokens provide access to the a given store's API.

SHOPIFY_SECRETS

Shopify API Secrets give access to all aspects of the general Shopify API – this rule contains logic to detect Shared Secrets and Access Tokens for regular, Custom, and Private applications.

SLACK

Slack API Tokens give access to various API features.

SLACK_WEBHOOK

Slack Webhooks are secret URLs which give similar access as API Tokens.

SQUARE_ACCESS_TOKEN

Square Access Tokens

SQUARE_OAUTH_SECRET

Square OAuth Secrets

SSH_PRIVATE_KEY

Generic SSH Private Key - We detect many common SSH Private Key formats.

SSH_PUBLIC_KEY

Public Key-half of key-based authentication. Weak public keys can be brute-force cracked by modern computers, and can represent equal vulnerability to the private-key half of the pair. Since properly-generated public keys are not a threat, this rule is disabled by default.

TROJAN_SOURCE

Trojan Source detects left-to-right and right-to-left unicode control characters which can be used to obscure malicious code. For more information, see the Trojan Source paper and CVE-2021-42574 in the NIST Database.

Note: the homoglyph attack described in this paper, and tracked as CVE-2021-42694 in the NIST Database, is not detected by this rule, as it can generate a lot of false positives for non-English languages. See Mitigating Trojan Source attacks for Soteri’s recommendations if you’re interested in detecting potential homoglyph attacks.

STRIPE_API_KEY

Stripe API Key

TWILIO_ACCOUNT_ID

Twilio Account ID - part of the Twilio API

TWILIO_API_KEY

Twilio API Key - part of the Twilio API

TWITTER_CLIENT_ID

Twitter Client ID

TWITTER_SECRET_KEY

Twitter Secret Key


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