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Profile interkassa


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    1000 Maximum bounty
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    5 Reports resolved



Information security of the company and the security of our users' data is a top priority for us, therefore Interkassa launched a contest to find vulnerabilities and pay rewards for them. To participate in the contest, you must agree and follow the rules described in this policy. You must be the first to report a vulnerability to receive a reward. You must send a clear textual description of the work done, along with steps to reproduce the vulnerability. After sending an error message about it, you can not tell anyone or anywhere. Also, please do not store screenshots and / or executable codes and scripts related to the vulnerability discovered on publicly available services and resources so that the information is not available to third parties.


In the web services and interkassa web applications that store or process personal information of users. Personal information is, for example, logins and passwords, correspondence, order history and payment.

Web services:

  • *

What to look for

Vulnerabilities are critical gaps and technical flaws in systems that can violate the integrity or confidentiality of user information, as well as change access rights to it.

Interkassa Web:

  • Privilege escalation (both vertical and horizontal)
  • Data breach
  • Bypass of authentication controls

Where and how to report

Sending error messages is best through a special form of hackenproof platform: so, the triage team can process the information sent and respond faster to you.

We want to see in the vulnerability report:

(when forming a report, stick to this list, so that the reward is the maximum and arrived to you faster)

  • the resource on which the vulnerability was found;
  • type of vulnerability;
  • vector of attack;
  • risks from possible implementation of the vulnerability;
  • playback steps;
  • possible ways of correcting the bug;
  • screen-shots / video screen confirming the presence of a vulnerability and demonstrating the steps of playback.

The size of awards

The size of the awards depends on priority of vulnerability and are the next: Valuable Services

  • Critical 400 HKN
  • High 250 HKN
  • Medium 150 HKN
  • Low&Informational 50 HKN

In special cases, the size of the award can be increased if the researchers demonstrate how the vulnerability can be used to inflict maximum harm.


In general, the following vulnerabilities do not correspond to the severity threshold: This section contains problems that are not accepted in this competition, because they are malicious and / or because they have a low impact on security.

  • UI and UX bugs and spelling or localization mistakes.
  • Descriptive error messages (e.g. Stack Traces, application or server errors)
  • Open redirects. 99% of open redirects have low security impact. For the rare cases where the impact is higher, e.g., stealing auth tokens, we do still want to hear about them
  • Publicly accessible login panels without proof of exploitation.
  • Reports that state that software is out of date/vulnerable without a proof of concept.
  • Host header issues without proof-of-concept demonstrating vulnerability.
  • HTTP codes/pages or other HTTP non- codes/pages.
  • Fingerprinting / banner disclosure on common/public services.
  • Disclosure of known public files or directories, (e.g. robots.txt).
  • Clickjacking/Tapjacking and issues only exploitable through clickjacking/tapjacking.
  • CSRF in forms that are available to anonymous users (e.g. the contact form).
  • Login & Logout CSRF
  • Presence of application or web browser ‘autocomplete’ or ‘save password’ functionality.
  • Lack of Secure/HTTPOnly flags on non-security-sensitive Cookies.
  • OPTIONS HTTP method enabled
  • Lack of Security Speed bump when leaving the site.
  • Weak Captcha
  • Content injection issues.
  • HTTPS Mixed Content Scripts
  • Content Spoofing without embedded links/html
  • Self-XSS that can not be used to exploit other users (this includes having a user paste JavaScript into the browser console).
  • Reflected File Download (RFD).
  • Best practices concerns.
  • HTML Injection
  • Highly speculative reports about theoretical damage. Be concrete.
  • Missing HTTP security headers, specifically, For e.g.
  • Strict-Transport-Security
  • X-Frame-Options
  • X-XSS-Protection
  • Host Header
  • X-Content-Type-Options
  • Content-Security-Policy, X-Content-Security-Policy, X-WebKit-CSP
  • Content-Security-Policy-Report-Only
  • Infrastructure vulnerabilities, including:
  • Certificates/TLS/SSL related issues
  • DNS issues (i.e. mx records, SPF records, etc.)
  • Server configuration issues (i.e., open ports, TLS, etc.)
  • Outdated web browsers: vulnerabilities contingent upon outdated or unpatched browsers will not be honored, including Internet Explorer all versions
  • Vulnerabilities involving active content such as web browser add-ons
  • XSS issues that affect only outdated browsers (like Internet Explorer)
  • Issues that require physical access to a victim’s computer.
  • Physical or social engineering attempts (this includes phishing attacks against employees).
  • Recently disclosed 0day vulnerabilities.
  • Microsites with little to no user data
  • Most brute forcing issues
  • Denial of service
  • Spammingice
  • Spamming