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Fourteen new types of attacks on web browsers detected

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December 31, 2021
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Fourteen new types of attacks on web browsers detected

by ITECHNEWS
December 31, 2021
in Leading Stories, Opinion
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Fourteen new types of attacks on web browsers detected

IT security experts have identified 14 new types of attacks on web browsers that are known as cross-site leaks, or XS-Leaks. Using XS-Leaks, a malicious website can grab personal data from visitors by interacting with other websites in the background. The researchers from Ruhr-Universität Bochum (RUB) and Niederrhein University of Applied Sciences tested how well 56 combinations of browsers and operating systems are protected against 34 different XS-Leaks.

o this end, they developed the websiteXSinator.com, which allowed them to automatically scan browsers for these leaks. Popular browsers such as Chrome and Firefox, for example, were vulnerable to a large number of XS-Leaks. “XS-Leaks are often browser bugs that have to be fixed by the manufacturer,” says Lukas Knittel, one of the Bochum authors of the paper.

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The researchers published their findings online and at the ACM Conference on Computer and Communications Security, which was held as a virtual event in mid-November 2021. At the conference, Lukas Knittel, Dr. Christian Mainka, Dominik Noß and Professor Jörg Schwenk from the Horst Görtz Institute for IT-Security at RUB as well as Professor Marcus Niemietz from the Niederrhein University of Applied Sciences received a Best Paper Award for their study. The study took place within the Cluster of Excellence “CASA—Cyber Security in the Age of Large-Scale Adversaries.”

How XS-Leaks work

XS-Leaks bypass the so-called same-origin policy, one of a browser’s main defenses against various types of attacks. The purpose of the same-origin policy is to prevent information from being stolen from a trusted website. In the case of XS-Leaks, attackers can nevertheless recognize individual details of a website. If these details are tied to personal data, those data can be leaked. For example, emails in a webmail inbox could be read from a malicious site, because the search function would respond in a different way depending on whether there were results for a search term or not.

In order to systematically analyze XS-Leaks, the group first identified three characteristics of such attacks. Based on these, they then derived a formal model that aids in understanding XS-Leaks and helps in detecting new attacks. As a result, the researchers identified 14 new attack categories.

Source: by  Ruhr-Universitaet-Bochum
Tags: Attacksweb browsers
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