KLA12192 Multiple vulnerabilities in Microsoft Browser

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

Below is a complete list of vulnerabilities:

1. A policy enforcement vulnerability in Content Security Policy can be exploited to bypass security restrictions.
2. A policy enforcement vulnerability in iFrameSandbox can be exploited to bypass security restrictions.
3. A security UI vulnerability in payments component can be exploited to spoof user interface.
4. A use after free vulnerability in WebRTC can be exploited to cause denial of service or execute arbitrary code.
5. A security feature bypass vulnerability in Microsoft Edge (Chromium-based) can be exploited remotely to bypass security restrictions.
6. A double free vulnerability in ICU can be exploited to cause denial of service or execute arbitrary code.
7. A use after free vulnerability in TabStrip can be exploited to cause denial of service or execute arbitrary code.
8. A policy enforcement vulnerability in cookies component can be exploited to bypass security restrictions.
9. An out of bounds read vulnerability in V8 can be exploited to obtain sensitive information or cause denial of service.
10. A heap buffer overflow vulnerability in Autofill can be exploited to cause denial of service or execute arbitrary code.
11. A use after free vulnerability in WebUI can be exploited to cause denial of service or execute arbitrary code.
12. A use after free vulnerability in WebAudio can be exploited to cause denial of service or execute arbitrary code.
13. A policy enforcement vulnerability in PopupBlocker can be exploited to bypass security restrictions.
14. A use after free vulnerability in TabGroups can be exploited to cause denial of service or execute arbitrary code.
15. An out of bounds memory access vulnerability in WebAudio can be exploited to cause denial of service or execute arbitrary code.
16. An out of bounds write vulnerability in TabStrip can be exploited to cause denial of service or execute arbitrary code.
17. A use after free vulnerability in WebAuthentication can be exploited to cause denial of service or execute arbitrary code.
18. A use after free vulnerability in Bookmarks can be exploited to cause denial of service or execute arbitrary code.
19. An elevation of privilege vulnerability in Microsoft Edge (Chromium-based) can be exploited remotely to gain privileges.

Original advisories

CVE-2021-30538

CVE-2021-30534

CVE-2021-30540

CVE-2021-30523

CVE-2021-31982

CVE-2021-30535

CVE-2021-30524

CVE-2021-30537

CVE-2021-30536

CVE-2021-30521

CVE-2021-30527

CVE-2021-30539

CVE-2021-30532

CVE-2021-30522

CVE-2021-30533

CVE-2021-30525

CVE-2021-30530

CVE-2021-30526

CVE-2021-30528

CVE-2021-30531

CVE-2021-30529

CVE-2021-31937

Related products

Microsoft-Edge

CVE list

CVE-2021-30538 warning

CVE-2021-30540 high

CVE-2021-30533 high

CVE-2021-30527 critical

CVE-2021-30522 critical

CVE-2021-30521 critical

CVE-2021-30531 high

CVE-2021-30523 critical

CVE-2021-30524 critical

CVE-2021-30535 critical

CVE-2021-30526 critical

CVE-2021-30530 critical

CVE-2021-30525 critical

CVE-2021-30539 high

CVE-2021-30529 critical

CVE-2021-30528 critical

CVE-2021-30532 warning

CVE-2021-30537 warning

CVE-2021-30534 high

CVE-2021-30536 critical

CVE-2021-31982 critical

CVE-2021-31937 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.

• 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.

• PE

Privilege escalation. Exploitation of vulnerabilities with this impact can lead to performing by abuser actions, which are normally disallowed for current role.

• 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)