KLA12329 Multiple vulnerability 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, obtain sensitive information.

Below is a complete list of vulnerabilities:

1. Use after free vulnerability in Incognito can be exploited to cause denial of service or execute arbitrary code.
2. Heap buffer overflow vulnerability in Skia can be exploited to cause denial of service.
3. Validation of untrusted input vulnerability in Downloads can be exploited to bypass security restrictions.
4. Use after free vulnerability in PDF Accessibility can be exploited to cause denial of service or execute arbitrary code.
5. Use after free vulnerability in Profiles can be exploited to cause denial of service or execute arbitrary code.
6. Heap buffer overflow vulnerability in PDFium can be exploited to cause denial of service.
7. Implementation vulnerability in Blink can be exploited to cause denial of service.
8. Implementation vulnerability in WebView can be exploited to cause denial of service.
9. Use after free vulnerability in Network APIs can be exploited to cause denial of service or execute arbitrary code.
10. Heap buffer overflow vulnerability in Settings can be exploited to cause denial of service.
11. Use after free vulnerability in Dev Tools can be exploited to cause denial of service or execute arbitrary code.
12. Out of bounds read vulnerability in WebAudio can be exploited to cause denial of service or obtain sensitive information.
13. Implementation vulnerability in WebApp Installer can be exploited to cause denial of service.
14. An information disclosure vulnerability in Microsoft Edge (Chromium-based) can be exploited remotely to obtain sensitive information.
15. Implementation vulnerability in iFrame Sandbox can be exploited to cause denial of service.
16. Race condition vulnerability in V8 can be exploited to cause denial of service.
17. Use after free vulnerability in V8 can be exploited to cause denial of service or execute arbitrary code.

Original advisories

CVE-2021-37982

CVE-2021-37981

CVE-2021-37996

CVE-2021-37993

CVE-2021-37988

CVE-2021-37984

CVE-2021-37989

CVE-2021-37990

CVE-2021-37987

CVE-2021-37986

CVE-2021-37983

CVE-2021-37992

CVE-2021-37995

CVE-2021-42307

CVE-2021-37994

CVE-2021-37991

CVE-2021-37985

Related products

Microsoft-Edge

CVE list

CVE-2021-37986 critical

CVE-2021-37984 critical

CVE-2021-37993 critical

CVE-2021-37981 critical

CVE-2021-37985 critical

CVE-2021-37995 high

CVE-2021-37991 critical

CVE-2021-37983 critical

CVE-2021-37989 high

CVE-2021-37988 critical

CVE-2021-37990 high

CVE-2021-37994 high

CVE-2021-37982 critical

CVE-2021-37996 high

CVE-2021-37992 critical

CVE-2021-37987 critical

CVE-2021-42307 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.

Affected Products

• Microsoft Edge (Chromium-based)