KLA12049 Multiple vulnerabilities in Microsoft Browsers

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

Below is a complete list of vulnerabilities:

1. Use after free vulnerability in WebSQL can be exploited to cause denial of service or execute arbitrary code.
2. Heap buffer overflow vulnerability in Blink can be exploited to cause denial of service.
3. Implementation vulnerability in Performace API can be exploited to potentially cause denial of service.
4. Data validation vulnerability in File System API can be exploited to bypass security restrictions.
5. Policy enforcement vulnerability in WebView can be exploited to bypass security restrictions.
6. Policy enforcement vulnerability in extensions can be exploited to bypass security restrictions.
7. Policy enforcement vulnerability in File System API can be exploited to bypass security restrictions.
8. Use after free vulnerability in Speech Recognizer can be exploited to cause denial of service or execute arbitrary code.
9. Use after free vulnerability in Media can be exploited to cause denial of service or execute arbitrary code.
10. Uninitialized use vulnerability in USB can be exploited to bypass security restrictions.
11. Use after free vulnerability in Blink can be exploited to cause denial of service or execute arbitrary code.
12. Use after free vulnerability in Omnibox can be exploited to cause denial of service or execute arbitrary code.
13. Implementation vulnerability in DevTools can be exploited to potentially cause denial of service.
14. Implementation vulnerability in iframe sandbox can be exploited to potentially cause denial of service.
15. Use after free vulnerability in WebRTC can be exploited to cause denial of service or execute arbitrary code.
16. Security UI vulnerability in Page Info can be exploited to spoof user interface.
17. Data validation vulnerability in V8 can be exploited to bypass security restrictions.
18. Policy enforcement vulnerability in Downloads can be exploited to bypass security restrictions.

Original advisories

CVE-2021-21120

CVE-2021-21128

CVE-2021-21135

CVE-2021-21123

CVE-2021-21130

CVE-2021-21126

CVE-2021-21125

CVE-2021-21136

CVE-2021-21141

CVE-2021-21124

CVE-2021-21119

CVE-2021-21140

CVE-2021-21122

CVE-2021-21121

CVE-2021-21127

CVE-2021-21137

CVE-2021-21129

CVE-2021-21139

CVE-2020-16044

CVE-2021-21132

CVE-2021-21134

CVE-2021-21118

CVE-2021-21133

CVE-2021-21131

Related products

Microsoft-Edge

CVE list

CVE-2020-16044 critical

CVE-2021-21119 critical

CVE-2021-21140 high

CVE-2021-21139 high

CVE-2021-21135 high

CVE-2021-21136 high

CVE-2021-21129 high

CVE-2021-21130 high

CVE-2021-21122 critical

CVE-2021-21134 high

CVE-2021-21125 critical

CVE-2021-21131 high

CVE-2021-21126 high

CVE-2021-21132 critical

CVE-2021-21128 critical

CVE-2021-21120 critical

CVE-2021-21137 high

CVE-2021-21124 critical

CVE-2021-21123 high

CVE-2021-21127 critical

CVE-2021-21141 high

CVE-2021-21121 critical

CVE-2021-21133 high

CVE-2021-21118 critical

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.

• 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)