KLA12382 Multiple vulnerabilities in Microsoft Browser

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

Below is a complete list of vulnerabilities:

1. Security bypass vulnerability in ANGLE can be exploited to bypass security restrictions.
2. Heap buffer overflow vulnerability in Swiftshader can be exploited to cause denial of service.
3. Use after free vulnerability in Swiftshader can be exploited to cause denial of service or execute arbitrary code.
4. Use after free vulnerability in V8 can be exploited to cause denial of service or execute arbitrary code.
5. Data validation vulnerability in Mojo can be exploited to bypass security restrictions.

Original advisories

CVE-2021-4100

CVE-2021-4101

CVE-2021-4099

CVE-2021-4102

CVE-2021-4098

Related products

Microsoft-Edge

CVE list

CVE-2021-4100 critical

CVE-2021-4098 high

CVE-2021-4101 critical

CVE-2021-4099 critical

CVE-2021-4102 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.

Affected Products

• Microsoft Edge (Chromium-based)