KLA12351 Multiple vulnerabilities in Microsoft Browser

Multiple vulnerabilities were found in Microsoft Browser. Malicious users can exploit these vulnerabilities to execute arbitrary code, cause denial of service, bypass security restrictions, spoof user interface, obtain sensitive information.

Below is a complete list of vulnerabilities:

1. Use after free vulnerability in storage foundation can be exploited to cause denial of service or execute arbitrary code.
2. Policy enforcement vulnerability in CORS can be exploited to bypass security restrictions.
3. Implementation vulnerability in cache can be exploited to cause denial of service.
4. Implementation vulnerability in service can be exploited to cause denial of service.
5. Implementation vulnerability in input can be exploited to cause denial of service.
6. Type confusion vulnerability in V8 can be exploited to cause denial of service.
7. Spoofing vulnerability in Microsoft Edge can be exploited to spoof user interface.
8. Spoofing vulnerability in Microsoft Edge for iOS can be exploited to spoof user interface.
9. Remote code execution vulnerability in Microsoft Edge can be exploited remotely to execute arbitrary code.
10. Implementation vulnerability in WebAuthentication can be exploited to cause denial of service.
11. Heap buffer overflow vulnerability in fingerprint recognition can be exploited to cause denial of service.
12. Implementation vulnerability in navigation can be exploited to cause denial of service.
13. Policy enforcement vulnerability in sandbox can be exploited to bypass security restrictions.
14. Policy enforcement vulnerability in contacts picker can be exploited to bypass security restrictions.
15. Implementation vulnerability in referrer can be exploited to cause denial of service.
16. Use after free vulnerability in media can be exploited to cause denial of service or execute arbitrary code.
17. Use after free vulnerability in loader can be exploited to cause denial of service or execute arbitrary code.
18. Policy enforcement vulnerability in background fetch can be exploited to bypass security restrictions.
19. Out of bounds write vulnerability in Swiftshader can be exploited to cause denial of service or execute arbitrary code.

Original advisories

CVE-2021-38011

CVE-2021-38019

CVE-2021-38009

CVE-2021-38010

CVE-2021-38015

CVE-2021-38012

CVE-2021-42308

CVE-2021-43220

CVE-2021-43221

CVE-2021-38006

CVE-2021-38007

CVE-2021-38022

CVE-2021-38013

CVE-2021-38018

CVE-2021-38017

CVE-2021-38020

CVE-2021-38021

CVE-2021-38008

CVE-2021-38005

CVE-2021-38016

CVE-2021-38014

Related products

Microsoft-Edge

CVE list

CVE-2021-38011 critical

CVE-2021-38010 high

CVE-2021-38012 critical

CVE-2021-38019 high

CVE-2021-38006 critical

CVE-2021-38008 critical

CVE-2021-38021 high

CVE-2021-38005 critical

CVE-2021-38015 critical

CVE-2021-38017 critical

CVE-2021-38013 critical

CVE-2021-38020 warning

CVE-2021-38016 critical

CVE-2021-38014 critical

CVE-2021-38007 critical

CVE-2021-38009 high

CVE-2021-38018 high

CVE-2021-38022 high

CVE-2021-42308 warning

CVE-2021-43220 warning

CVE-2021-43221 warning

KB list

Solution

Install necessary updates from the Settings and more menu, that are listed in your About Microsoft Edge page (Microsoft Edge About page usually can be accessed from the Help and feedback option)

Microsoft Edge update settings

Impacts

• ACE

Arbitrary code execution. Exploitation of vulnerabilities with this impact can lead to executing by abuser any code or commands at vulnerable machine or process.

• OSI

Obtain sensitive information. Exploitation of vulnerabilities with this impact can lead to capturing by abuser information, critical for user or system.

• DoS

Denial of service. Exploitation of vulnerabilities with this impact can lead to loss of system availability or critical functional fault.

• SB

Security bypass. Exploitation of vulnerabilities with this impact can lead to performing actions restricted by current security settings.

• SUI

Spoof user interface. Exploitation of vulnerabilities with this impact can lead to changes in user interface to beguile user into inaccurate behavior.

Affected Products

• Microsoft Edge (Chromium-based)Microsoft Edge for iOS