KLA12267 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 ANGLE can be exploited to cause denial of service or execute arbitrary code.
2. Race condition vulnerability in WebAudio can be exploited to cause denial of service.
3. Use after free vulnerability in Extensions API can be exploited to cause denial of service or execute arbitrary code.
4. Use after free vulnerability in WebRTC can be exploited to cause denial of service or execute arbitrary code.
5. Type confusion vulnerability in V8 can be exploited to cause denial of service.

Original advisories

CVE-2021-30604

CVE-2021-30603

CVE-2021-30601

CVE-2021-30602

CVE-2021-30599

CVE-2021-30598

Exploitation

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

Related products

Microsoft-Edge

CVE list

CVE-2021-30601 critical

CVE-2021-30603 critical

CVE-2021-30598 critical

CVE-2021-30604 critical

CVE-2021-30602 critical

CVE-2021-30599 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)