#Security Vulnerability

*What security feature is bypassed with this vulnerability?* A successful attacker could bypass the Windows Key Storage Provider which issues key certificates for trust in attestation scenarios.

*According to the CVSS, User Interaction is Required. What interaction would the user have to do?* Exploitation of the vulnerability requires that a user open a specially crafted file. * In an email attack scenario, an attacker could exploit the vulnerability by sending the specially crafted file to the user and convincing the user to open the file. * In a web-based attack scenario, an attacker could host a website (or leverage a compromised website that accepts or hosts user-provided content) containing a specially crafted file designed to exploit the vulnerability. An attacker would have no way to force users to visit the website. Instead, an attacker would have to convince users to click a link, typically by way of an enticement in an email or instant message, and then convince them to open the specially crafted file.

*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 uninitialized memory and kernel memory - unintentional read access to memory contents in kernel space from a user mode process.

*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 uninitialized memory and kernel memory - unintentional read access to memory contents in kernel space from a user mode process.

*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 unauthorized file system access - reading from the file system.

*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 uninitialized memory and kernel memory - unintentional read access to memory contents in kernel space from a user mode process.

*What is the version information for this release?* Microsoft Edge Version Date Released Based on Chromium Version 93.0.961.44 9/9/2021 93.04577.63

By default, Microsoft Office opens documents from the internet in Protected View or Application Guard for Office both of which prevent the current attack. * For information about Protected View, see What is Protected View?. * For information about Application Guard for Office, see Application Guard for Office. Customers of Microsoft Defender for Endpoint can enable attack surface reduction rule "BlockOfficeCreateProcessRule" that blocks Office apps from creating child processes. Creating malicious child processes is a common malware strategy. For more information see Use attack surface reduction rules to prevent malware infection.

*What is the version information for this release?* | Microsoft Edge Version | Date Released | Based on Chromium Version | | ----- | ----- | ----- | | 93.0.961.38 | 9/2/2021 | 93.0.4577.63 |

*What is the version information for this release?* | Microsoft Edge Version | Date Released | Based on Chromium Version | | ----- | ----- | ----- | | 93.0.961.38 | 9/2/2021 | 93.0.4577.63 |