Responsible Disclosure Policy TAXDOO GMBH

July 3, 2023

Introduction

Taxdoo is committed to ensuring the security of its customers and partners by protecting their information. This policy is intended to give security researchers clear guidelines for conducting vulnerability discovery activities and to convey our preferences in how to submit discovered vulnerabilities to us.

This policy describes what systems and types of research are covered under this policy, how to send us vulnerability reports, and how long we ask security researchers to wait before publicly disclosing vulnerabilities.

We encourage you to contact us to report potential vulnerabilities in our systems.

Authorization

If you make a good faith effort to comply with this policy during your security research, we will consider your research to be authorized, we will work with you to understand and resolve the issue quickly, and Taxdoo will not recommend or pursue legal action related to your research. Should legal action be initiated by a third party against you for activities that were conducted in accordance with this policy, we will make this authorization known.

Guidelines

Under this policy, “research” means activities in which you:

  • Notify us as soon as possible after you discover a real or potential security issue.
  • Make every effort to avoid privacy violations, degradation of user experience, disruption to production systems, and destruction or manipulation of data.
  • Only use exploits to the extent necessary to confirm a vulnerability’s presence. Do not use an exploit to compromise or exfiltrate data, establish persistent command line access, or use the exploit to pivot to other systems.
  • Provide us a reasonable amount of time to resolve the issue before you disclose it publicly.
  • Do not submit a high volume of low-quality reports.


Once you’ve established that a vulnerability exists or encountered any sensitive data that shouldn’t be accessible to you as part of your Taxdoo user account (including personally identifiable information, financial information, or proprietary information or trade secrets of any party), you must stop your test, notify us immediately, and not disclose this data to anyone else.

Test methods and applicable Vulnerabilities

All design and implementation incidents at Taxdoo can be reported, as long as they are reproducible and have an impact on security. However, the following test methods are not authorized:

  • Network denial of service (DoS or DDoS) tests or other tests that impair access to or damage a system or data.
  • Physical testing (e.g. office access, open doors, tailgating), social engineering (e.g. phishing, vishing), or any other non-technical vulnerability testing
  • Bots, Spam or Mass-Registrations
  • Social Engineering

Examples for qualified vulnerabilities that can be rewarded if they come with proof of exploitability:

  • Cross-Site Request Forgery
  • Server-side Request Forgery
  • Cross-Site Scripting (XSS)
  • Insecure Direct Object References
  • Remote Code Execution vulnerabilities
  • Injection Flaws 
  • Leak of Information and exfiltration of data
  • Unauthorized Access to data or accounts
  • Active backdoors
  • Proof of misconfiguration that leads to active exploitation 

Examples for non-qualified vulnerabilities, which can be reported but are not eligible for rewards:

  • Self-XSS
  • SPF/DKIM/DMARC misconfiguration
  • Reports from automated scripts/tools that come without attached explanation of the results
  • Use of vulnerable dependencies/packages that does not lead to active exploitation
  • Missing security headers that do not lead to active exploitation
  • General best practices concerns that do not lead to active exploitation
  • Vulnerabilities that have already been reported to us

Scope

This Policy applies to all systems and services that run under the www.taxdoo.com and any other subdomain of taxdoo.com.

Any service not expressly listed above, such as any connected services, are excluded from scope and are not authorized for testing. Additionally, vulnerabilities found in systems from our vendors fall outside the scope of this policy and should be reported directly to the vendor according to their disclosure policy (if any). If you are unsure whether a system is in scope or not, contact us at security@taxdoo.com before starting your research.

Although we develop and maintain other internet-accessible systems or services, we ask that active research and testing only be conducted on the systems and services covered by the scope of this document. If there is a particular system not in scope that you think merits testing, please contact us to discuss it first. We will increase the scope of this Policy over time.

Reporting a vulnerability

Vulnerability reports must be submitted by email to security@taxdoo.com. We will acknowledge receipt of your report within 5 (five) business days. We reserve the right to not pay rewards if messages are sent through other communication channels.

What we would like to see from you

To assist us to triage and prioritize submissions, we recommend that your reports:

  • Describe the time and location the vulnerability was discovered and the potential impact of exploitation.
  • Offer a detailed description of the steps needed to reproduce the vulnerability (proof of concept scripts or screenshots are helpful).
  • Be in English.

What you can expect from us

When you choose to share your contact information with us, we commit to coordinating with you as openly and as quickly as possible.

  • Within 5 (five) business days, we will acknowledge that your report has been received.
  • To the best of our ability, we will confirm the existence of the vulnerability to you, and be as transparent as possible about what steps we are taking during the remediation process, including on issues or challenges that may delay resolution.
  • We will maintain an open dialogue to discuss issues.

Rewards

We offer monetary rewards based on the severity of the reported finding and only if the submitted report contains proof of exploitability for the given vulnerability. While we still appreciate and encourage you to report security risks that come without an actual exploit, we will not pay a monetary reward for that.

Below you can find a table that depicts the monetary ranges we are providing based on the result of our risk assessment.

Low

50€ - 150€

Medium

150€ - 250€

High

250€ - 500€

Critical

500€ - 1.000€

The rewards will be paid when the reports are resolved.

Questions

Questions regarding this policy may be sent to security@taxdoo.com. We also invite you to contact us with suggestions for improving this policy.