CVE-2020-0706: Microsoft Browser Information Disclosure Vulnerability

Overview

Severity
Medium (CVSS 4.3)
CVSS Vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N/E:P/RL:O/RC:C
Category
Information Disclosure
Exploit Status
Not Exploited
Exploitation Likelihood
Less Likely
Publicly Disclosed
Yes
Patch Tuesday
2020-Feb
Released
2020-02-11
EPSS Score
9.89% (percentile: 93.0%)

Description

An information disclosure vulnerability exists in the way that affected Microsoft browsers handle cross-origin requests. An attacker who successfully exploited this vulnerability could determine the origin of all of the web pages in the affected browser. In a web-based attack scenario, an attacker could host a website that is used to attempt to exploit the vulnerability. Additionally, compromised websites and websites that accept or host user-provided content could contain specially crafted content that could be used to exploit the vulnerability. However, in all cases an attacker would have no way to force users to view attacker-controlled content. Instead, an attacker would have to convince users to take action. For example, an attacker could trick users into clicking a link that takes them to the attacker's site. The security update addresses the vulnerability by correcting how affected browsers handle cross-origin resources.

FAQ

What type of information could be disclosed by this vulnerability? The type of information that could be disclosed if an attacker successfully exploited this vulnerability is sensitive information.

Affected Products (40)

Browser

  • Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1803 for 32-bit Systems
  • Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1803 for x64-based Systems
  • Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1803 for ARM64-based Systems
  • Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1809 for 32-bit Systems
  • Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1809 for x64-based Systems
  • Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1809 for ARM64-based Systems
  • Microsoft Edge (EdgeHTML-based) on Windows Server 2019
  • Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1903 for 32-bit Systems
  • Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1903 for x64-based Systems
  • Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1903 for ARM64-based Systems
  • Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1909 for 32-bit Systems
  • Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1909 for x64-based Systems
  • Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1909 for ARM64-based Systems
  • Internet Explorer 10 on Windows Server 2012
  • Internet Explorer 11 on Windows 10 Version 1803 for 32-bit Systems
  • Internet Explorer 11 on Windows 10 Version 1803 for x64-based Systems
  • Internet Explorer 11 on Windows 10 Version 1803 for ARM64-based Systems
  • Internet Explorer 11 on Windows 10 Version 1809 for 32-bit Systems
  • Internet Explorer 11 on Windows 10 Version 1809 for x64-based Systems
  • Internet Explorer 11 on Windows 10 Version 1809 for ARM64-based Systems
  • Internet Explorer 11 on Windows Server 2019
  • Internet Explorer 11 on Windows 10 Version 1709 for 32-bit Systems
  • Internet Explorer 11 on Windows 10 Version 1709 for x64-based Systems
  • Internet Explorer 11 on Windows 10 Version 1709 for ARM64-based Systems
  • Internet Explorer 11 on Windows 10 Version 1903 for 32-bit Systems
  • Internet Explorer 11 on Windows 10 Version 1903 for x64-based Systems
  • Internet Explorer 11 on Windows 10 Version 1903 for ARM64-based Systems
  • Internet Explorer 11 on Windows 10 for 32-bit Systems
  • Internet Explorer 11 on Windows 10 for x64-based Systems
  • Internet Explorer 11 on Windows 10 Version 1607 for 32-bit Systems
  • Internet Explorer 11 on Windows 10 Version 1607 for x64-based Systems
  • Internet Explorer 11 on Windows Server 2016
  • Internet Explorer 11 on Windows 8.1 for 32-bit systems
  • Internet Explorer 11 on Windows 8.1 for x64-based systems
  • Internet Explorer 11 on Windows RT 8.1
  • Internet Explorer 11 on Windows Server 2012
  • Internet Explorer 11 on Windows Server 2012 R2
  • Internet Explorer 11 on Windows 10 Version 1909 for 32-bit Systems
  • Internet Explorer 11 on Windows 10 Version 1909 for x64-based Systems
  • Internet Explorer 11 on Windows 10 Version 1909 for ARM64-based Systems

Security Updates (9)

Acknowledgments

James Lee <a href="https://twitter.com/Windowsrcer"/>@Windowsrcer</a>

Revision History

  • 2020-02-11: Information published.