Description

Intergamma is the biggest DIY retailer of The Netherlands and Belgium with three brands: GAMMA Nederland, GAMMA België, and KARWEI. We have almost 400 DIY stores and operate three eCommerce websites. Our strategy is to be the best omnichannel retailer of the Netherlands and Belgium. This means offline and online are converging, and eCommerce is a growth market. Therefore a secure platform is paramount. For more information on our organization please visit https://www.intergamma.nl/

Bounties
Low
Medium
High
Critical
Exceptional
Tier 2
€ 0
€ 100
€ 500
€ 1,000
€ 2,000
Up to € 2,000
Tier 3
€ 0
€ 25
€ 125
€ 250
€ 750
Up to € 750
Domains

*.gamma.be/*

Tier 2
URL

Out of scope: mail.gamma.be

GAMMA Belgium focusses on the Belgian market with specific product range. GAMMA Belgium started in 1979. In 1993 we opened the first bilingual store, and the first store with sole French language. Our slogan is: How do you make it? Together with GAMMA.

gamma.be holds over 30.000 products, more than 500 how-to guides, videos, calculators, and configurators,

*.gamma.nl/*

Tier 2
URL

Out of scope: mail.gamma.nl & subsidie-admin.gamma.nl

In 1971 GAMMA opened the first DIY store for the ' ordinairy' DIY guys and girls, and not the professional ones. So yes, GAMMA introduced DIY stores to the Netherlands. 50 years later GAMMA is the biggest DIY retailer of The Netherlands with over 166 stores.

GAMMA focusses on building and DIY, where our brand Karwei focusses more on interiour styling and decoration. At GAMMA our customers find everything they need to get the job done! Our slogan is: I can do it. GAMMA

We have over 30.000 products, many tips and tricks on how to get the job done, and if you're sick of it we offer 'do it for me' to get the best professionals for your ideas.

*.karwei.nl/*

Tier 2
URL

Out of scope: mail.karwei.nl & subsidie-admin.karwei.nl

Karwei is the DIY store for interiour styling and decoration. We make a great and stylish home available for everyone. We like materials, colors, shapes, and know how to combine them. We have a broad range of curtains, floors, paint, lights, furniture and accessories, so there is always a great combinations that matches your style!

Karwei is the biggest DIY store in social media, with over 250.000 followers on Instagram and an up-to-date Pinterest-account with over 5 million monthly views.

*.intergamma-test.nl

Tier 3
URL

*.intergamma.cloud

Tier 3
URL

*.intergamma.nl/*

Tier 3
URL

Intergamma.nl is the corporate website.

*.restintergamma.nl

Tier 3
URL
Tier 3
iOS

Our brand new iOS app fully dedicated to paint, with nice features to use AR and see how the paint looks on your own wall.
Shares various web views with our website.

Technically equal to the Android version

Tier 3
iOS

iOS app of GAMMA NL

Tier 3
iOS

iOS app of Karwei

Tier 3
iOS

iOS app of GAMMA BE

Tier 3
Android

Android app of GAMMA BE

https://zabbix.intergamma.nl/*

Tier 3
URL

Zabbix installation

Tier 3
Android

Android app of GAMMA NL

Tier 3
Android

Our brand new Android app fully dedicated to paint, with nice features to use AR and see how the paint looks on your own wall.
Shares various web views with our website.

Technically equal to the iOS version

Tier 3
Android

Android app of Karwei

*.karweioutletstore.nl

No Bounty
URL

*.werkenbijgamma.be

No Bounty
URL

Recruiting website

*.werkenbijgamma.nl

No Bounty
URL

Recruiting website

*.werkenbijkarwei.nl

No Bounty
URL

Recruiting website

In scope

The use of an intigriti.me address is mandatory at all times! (Not respecting these rules means you will not be eligible for a bounty)

All the websites have an open registration..

Please use a rate limit of 2 request per second when using automation.

We are happy to announce our first bug bounty program! We've done our best to clean most of our known issues and now would like to request your help to spot the ones we missed! We are specifically looking for:

  • leaking of personal data
  • account takeover
  • ordering free items (and get all the required confirmations so it is a successful order)
  • access to backend resources
  • access to internal API's

For the sites in scope please refer to the 'Domains' section. Please take into account the patterns (e.g. for www.intergamma.nl everything with prefixes is out of scope)

Next to our websites our mobile apps are also in scope. Please note they have a big overlap in API call's and use a webview of the websites. Therefore many vulnerabilities present there stem from there. That's why we would like you to focus on the websites, hence the lower tier for the apps for now!

Please note that we largely use the same backend for all our websites and apps. That means a vulnerability in one, will most of the time be a vulnerability in all. Please submit it only once, we are not paying out for the same issue in different web sites (or we have to cut our bounties in nine 😉)

We plan to regularly put new features in the spotlight that still need to proof themselves, so keep an eye on us or subscribe to our program to receive updates when we do!

Out of scope

Out of scope domains

  • mail.gamma.nl
  • mail.gamma.be
  • mail.karwei.nl
  • subsidie-admin.gamma.nl
  • subsidie-admin.karwei.nl

Known issues

We will try to keep a fairly up to date list of known issues to save you any trouble finding and reporting them:

  • Password recovery token is still valid after password reset / change
  • Session cookie is not invalidated after logout or password reset
  • Password reset token is sent to third party in URL
  • Some internal IP addresses are visible
  • No password complexity requirements
  • Request to change password forces customer to change it
  • Store locator microservice exposes email address of shops
  • Open redirect on mijn.*

Application

  • Self-XSS that cannot be used to exploit other users
  • Verbose messages/files/directory listings without disclosing any sensitive information
  • CORS misconfiguration on non-sensitive endpoints
  • Missing cookie flags
  • Missing security headers
  • Cross-site Request Forgery with no or low impact
  • Presence of autocomplete attribute on web forms
  • Reverse tabnabbing
  • Bypassing rate-limits or the non-existence of rate-limits.
  • Best practices violations (password complexity, expiration, re-use, etc.)
  • Clickjacking on pages with no sensitive actions
  • CSV Injection
  • Host Header Injection
  • Sessions not being invalidated (logout, enabling 2FA, ..)
  • Hyperlink injection/takeovers
  • Mixed content type issues
  • Cross-domain referer leakage
  • Anything related to email spoofing, SPF, DMARC or DKIM
  • Content injection
  • Username / email enumeration
  • E-mail bombing
  • HTTP Request smuggling without any proven impact
  • Homograph attacks
  • XMLRPC enabled
  • Banner grabbing / Version disclosure
  • Open ports without an accompanying proof-of-concept demonstrating vulnerability
  • Weak SSL configurations and SSL/TLS scan reports
  • Not stripping metadata of images
  • Disclosing API keys without proven impact
  • Same-site scripting
  • Subdomain takeover without taken over the subdomain
  • Arbitrary file upload without proof of the existence of the uploaded file

General

  • In case that a reported vulnerability was already known to the company from their own tests, it will be flagged as a duplicate.
  • Theoretical security issues with no realistic exploit scenario(s) or attack surfaces, or issues that would require complex end user interactions to be exploited, may be excluded or be lowered in severity
  • Spam, social engineering and physical intrusion
  • DoS/DDoS attacks or brute force attacks.
  • Vulnerabilities that are limited to non-current browsers (older than 3 versions) will not be accepted
  • Attacks requiring physical access to a victim’s computer/device, man in the middle or compromised user accounts
  • Recently disclosed zero-day vulnerabilities in commercial products where no patch or a recent patch (< 2 weeks) is available. We need time to patch our systems just like everyone else - please give us 2 weeks before reporting these types of issues.
  • Reports that state that software is out of date/vulnerable without a proof-of-concept

Mobile

  • Shared links leaked through the system clipboard
  • Any URIs leaked because a malicious app has permission to view URIs opened
  • The absence of certificate pinning
  • Sensitive data in URLs/request bodies when protected by TLS
  • Lack of obfuscation
  • Path disclosure in the binary
  • Lack of jailbreak & root detection
  • Crashes due to malformed URL Schemes
  • Lack of binary protection (anti-debugging) controls, mobile SSL pinning
  • Snapshot/Pasteboard leakage
  • Runtime hacking exploits (exploits only possible in a jailbroken environment)
  • API key leakage used for insensitive activities/actions
  • Attacks requiring physical access to the victim's device
  • Attacks requiring installing malicious applications onto the victim's device
Rules of engagement

In order to gain a positive relationship and avoid misinterpretation and vagueness, we would like you to review the following program rules before you report a vulnerability. By participating in this program, you agree to respect our policy.

Program Rules

  • Please do NOT publicly discuss or publish any vulnerability before it has been fixed and you have received explicit permission from us to do so. You can send us a video as proof of concept, but remember to change its privacy settings to private.
  • Perform testing only on in-scope assets and respect assets and activities which are out-of-scope. If unsure or need advice, contact us.
  • We are hosting at AWS, so please take into account their penetration testing policy which you can find at https://aws.amazon.com/security/penetration-testing/
  • Make a good faith effort to avoid privacy violations, destruction of data, and interruption or degradation of our service.
  • If a vulnerability provides unintended access to data, limit the amount of data you access to the minimum required for effectively demonstrating a Proof of Concept.
  • Cease testing and submit a report immediately if you encounter any user data during testing, such as Personally Identifiable Information (PII), Personal Healthcare Information (PHI), credit card data, or proprietary information.
  • Provide an appropriate level of detail with reproducible steps so that the issue can be easily reproduced.
  • Please include the HTTP requests/responses in the report. This will help us to search for duplicate reports using the endpoint and triage reports more effectively; include the vulnerable requests in the comment using markdown.
  • Social engineering (e.g. phishing, vishing, smishing) is prohibited.
  • Do not attempt to execute Denial of Service attacks.

Our promise to you

  • We will respond to report in ultimately two weeks, probably faster!
  • We are happy to respond to any questions, please use the button in the right top corner for this.
  • We respect the safe harbour clause that you can find below

Your promise to us

  • Provide detailed but to-the point reproduction steps
  • Include a clear attack scenario. How will this affect us exactly?
  • Remember: quality over quantity!
  • Please do not discuss or post vulnerabilities without our consent (including PoC's on YouTube and Vimeo)
  • Please do not use automatic scanners -be creative and do it yourself! We cannot accept any submissions found by using automatic scanners. Scanners also won't improve your skills, and can cause a high server load (we'd like to put our time in thanking researchers rather than blocking their IP's 😉)

Safe harbour for researchers

Intergamma considers ethical hacking activities conducted consistent with the Researcher Guidelines, the Program description and restrictions (the Terms) to constitute “authorized” conduct under criminal law. Intergamma will not pursue civil action or initiate a complaint for accidental, good faith violations, nor will they file a complaint for circumventing technological measures used by us to protect the scope as part of your ethical hacking activities.

If legal action is initiated by a third party against you and you have complied with the Terms, Intergamma will take steps to make it known that your actions were conducted in compliance and with our approval.

Severity assessment

As a general rule of thumb, severity assessments will be based upon their respective CVSS v3 score. Feel free to add your own calculation with the submission so we can see what you think and why you think that.

Exceptional

  • RCE (Remote Code Execution)

Critical

  • Access to all customer personal data
  • SQL injection

High

  • Stored XSS without user interaction
  • Order free products
  • Access to customer personal data

Medium

  • XSS
  • CSRF

Low

  • XSS that requires lots of user interaction ( > 3 steps)
  • Open redirect
FAQ

Where can we get credentials for the app?

You can self-register on the application but please don’t forget to use your @intigriti.me address.

All aboard!
Please log in or sign up on the platform

For obvious reasons we can only allow submissions or applications for our program with a valid intigriti account.

It will only take 2 minutes to create a new one or even less to log in with an existing account, so don't hesitate and let's get started. We would be thrilled to have you as part of our community.

Program specifics
ID check required
Reputation points
Triage
Researchers
last contributors
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Overall stats
submissions received
108
average payout
€113
accepted submissions
22
total payouts
€1,225
Last 90 day response times
avg. time first response
< 24 hours
avg. time to decide
< 3 days
avg. time to triage
< 2 days
Activity
4/18
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created a submission
4/18
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created a submission
4/17
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created a submission
4/16
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created a submission
4/16
Intergamma
accepted a submission
4/16
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created a submission
4/16
Intergamma
closed a submission
4/16
Intergamma
closed a submission
4/16
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created a submission
4/15
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created a submission