Microsoft Browsers Authentication Bypass by Spoofing Vulnerability


Microsoft Browsers suffers from authentication bypass by spoofing vulnerability


The information has been provided by Tomasz Bojarski

The original article can be found at:


A spoofing vulnerability exists when Microsoft Browsers does not properly parse HTTP content. An attacker who successfully exploited this vulnerability could impersonate a user request by crafting HTTP queries. The specially crafted website could either spoof content or serve as a pivot to chain an attack with other vulnerabilities in web services.

To exploit the vulnerability, the user must click a specially crafted URL. In an email attack scenario, an attacker could send an email message containing the specially crafted URL to the user in an attempt to convince the user to click it.

In a web-based attack scenario, an attacker could host a specially crafted website designed to appear as a legitimate website to the user. However, the attacker would have no way to force the user to visit the specially crafted website. The attacker would have to convince the user to visit the specially crafted website, typically by way of enticement in an email or instant message, and then convince the user to interact with content on the website.

Vulnerable Systems:

Microsoft Browsers 

CVE Information:


Disclosure Timeline:
Published Date:10/10/2019

Categories: News