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Insecure Direct Object Reference (IDOR) is a very common type of weakness in the application authorization logic. The potential damage from IDOR exploitation can be either minimal or critical. Let’s consider some cases when the
During the recent Google CTF competition I solved a curious web security challenge called safehtmlpaste that required to bypass a certain HTML sanitizer. The vulnerable application allows users to create Pastes with HTML-formatted text in
Deteact team has recently conducted a security audit of the blockchain voting service which is a part of Waves Enterprise system. Waves Enterprise system is a blockchain platform combining private and public networks. Waves Enterprise
In Russian: https://blog.deteact.com/ru/csp-bypass/ Content Security Policy (CSP) is an additional security mechanism built into browsers to prevent Cross Site Scripting (XSS). CSP allows to define whitelists of sources for JavaScript, CSS, images, frames, XHR connections.
There’re many different attacks under the name HTTP Request Smuggling. Let’s look at a simple example from the past SpamAndFlags CTF competition (I participated with More Smoked Leet Chicken team and we sadly finished 2nd).
In Russian: https://blog.deteact.com/ru/bitrix-waf-bypass/ UPD: CVE-2020-13758 assigned Sometimes when exploiting reflected XSS the input parameters get injected directly into the body of the <script> tag. Typically, this means that the exploit is trivial: HTML entity encoding
In Russian: https://blog.deteact.com/ru/common-flaws-of-sms-auth/ Many online services use SMS to authenticate users. But subtle implementation mistakes may lead to major problems. This is what we will talk about in this article. Intro This authentication protocol is
This year’s ZeroNights conference was held on 12-13 November in Saint Petersburg. Our team participated in the Web Security Village, where Ramazan Ramazanov, a security researcher at DeteAct, presented his continued research about Doctrine Query
Our team participated in the KazHackStan conference for the third time. We help the Call for Papers committee and presented our researches at this excellent conference in Kazakhstan. This year, Ramazan Ramazanov, a security researcher
In Russian: https://blog.deteact.com/ru/yandex-clickhouse-injection/ In order to process a large amount of data in Yandex.Metrika, Yandex created a column-oriented DBMS ClickHouse. During penetration tests, we encountered ClickHouse in the systems of statistics, event collection, stock exchange