KLA62469 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, bypass security restrictions.

Below is a complete list of vulnerabilities:

1. Use after free vulnerability in FedCM can be exploited to cause denial of service or execute arbitrary code.
2. Use after free vulnerability in CSS can be exploited to cause denial of service or execute arbitrary code.
3. Use after free vulnerability in libavif can be exploited to cause denial of service or execute arbitrary code.
4. A security feature bypass vulnerability in Microsoft Edge (Chromium-based) can be exploited remotely to bypass security restrictions.
5. Use after free vulnerability in WebRTC can be exploited to cause denial of service or execute arbitrary code.
6. Type confusion vulnerability in V8 can be exploited to cause denial of service.
7. Use after free vulnerability in Blink can be exploited to cause denial of service or execute arbitrary code.

Original advisories

CVE-2023-6706

CVE-2023-6707

CVE-2023-6704

CVE-2023-36878

CVE-2023-6705

CVE-2023-6702

CVE-2023-6703

Related products

Microsoft-Edge

CVE list

CVE-2023-6704 unknown

CVE-2023-6705 unknown

CVE-2023-6702 unknown

CVE-2023-6707 unknown

CVE-2023-6703 unknown

CVE-2023-6706 unknown

CVE-2023-36878 warning

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)