KLA12301 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, obtain sensitive information.

Below is a complete list of vulnerabilities:

1. An use after free vulnerability in V8 can be exploited to cause denial of service or execute arbitrary code.
2. An use after free vulnerability in Safe Browsing can be exploited to cause denial of service or execute arbitrary code.
3. An information leak vulnerability in core component can be exploited to obtain sensitive information.

Original advisories

CVE-2021-37975

CVE-2021-37974

CVE-2021-37976

Exploitation

Malware exists for this vulnerability. Usually such malware is classified as Exploit. More details.

Related products

Microsoft-Edge

CVE list

CVE-2021-37975 critical

CVE-2021-37974 critical

CVE-2021-37976 high

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.

Affected Products

• Microsoft Edge (Chromium-based)