KLA12093 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.

Below is a complete list of vulnerabilities:

1. Use after free vulnerability in Downloads can be exploited to cause denial of service or execute arbitrary code.
2. Heap buffer overflow vulnerability in V8 can be exploited to cause denial of service.
3. Stack overflow vulnerability in GPU Process can be exploited to cause denial of service.
4. Use after free vulnerability in Web Sockets can be exploited to cause denial of service or execute arbitrary code.
5. Stack overflow vulnerability in Data Transfer can be exploited to cause denial of service.
6. Heap buffer overflow vulnerability in Media can be exploited to cause denial of service.
7. Use after free vulnerability in Payments can be exploited to cause denial of service or execute arbitrary code.
8. Heap buffer overflow vulnerability in Tab Strip can be exploited to cause denial of service.

Original advisories

CVE-2021-21150

CVE-2021-21156

CVE-2021-21153

CVE-2021-21157

CVE-2021-21149

CVE-2021-21152

CVE-2021-21151

CVE-2021-21154

CVE-2021-21155

Related products

Microsoft-Edge

CVE list

CVE-2021-21150 critical

CVE-2021-21156 critical

CVE-2021-21153 critical

CVE-2021-21157 critical

CVE-2021-21149 critical

CVE-2021-21152 critical

CVE-2021-21151 critical

CVE-2021-21154 critical

CVE-2021-21155 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.

Affected Products

• Microsoft Edge (Chromium-based)