KLA52555 Multiple vulnerabilities in Microsoft Browser

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

Below is a complete list of vulnerabilities:

1. Out of bounds memory access vulnerability in Fonts can be exploited to cause denial of service.
2. An elevation of privilege vulnerability in Microsoft Edge (Chromium-based) can be exploited remotely to gain privileges.
3. Out of bounds memory access vulnerability in CSS can be exploited to cause denial of service.
4. Use after free vulnerability in Loader can be exploited to cause denial of service or execute arbitrary code.
5. Out of bounds memory access vulnerability in V8 can be exploited to cause denial of service.
6. Use after free vulnerability in Vulkan can be exploited to cause denial of service or execute arbitrary code.

Original advisories

CVE-2023-4431

CVE-2023-36741

CVE-2023-4428

CVE-2023-4429

CVE-2023-4427

CVE-2023-4430

Exploitation

Public exploits exist for this vulnerability.

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

Related products

Microsoft-Edge

CVE list

CVE-2023-4430 critical

CVE-2023-4429 critical

CVE-2023-4428 critical

CVE-2023-4427 critical

CVE-2023-4431 critical

CVE-2023-36741 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.

• PE

Privilege escalation. Exploitation of vulnerabilities with this impact can lead to performing by abuser actions, which are normally disallowed for current role.

• SUI

Spoof user interface. Exploitation of vulnerabilities with this impact can lead to changes in user interface to beguile user into inaccurate behavior.

Affected Products

• Microsoft Edge (Chromium-based)