SB2023101114 - Multiple vulnerabilities in Microsoft Windows Kernel

Description

This security bulletin contains information about 4 vulnerabilities.

1) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2023-36712)

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber

The vulnerability allows a remote attacker to escalate privileges on the system.

The vulnerability exists due to application does not properly impose security restrictions in Windows Kernel. A remote attacker can trick a victim to open a specially crafted file and gain elevated privileges.

2) Information disclosure (CVE-ID: CVE-2023-36576)

CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear

The vulnerability allows a local user to gain access to potentially sensitive information.

The vulnerability exists due to excessive data output by the application in Windows Kernel. A local user can gain unauthorized access to sensitive information on the system.

3) Security features bypass (CVE-ID: CVE-2023-36698)

CWE-ID: CWE-254 - Security Features

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear

The vulnerability allows a local user to compromise the target system.

The vulnerability exists due to security features bypass in Windows Kernel. A local user can bypass the Windows Arbitrary Code Guard exploit protection feature.

4) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2023-36725)

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to application does not properly impose security restrictions in Windows Kernel, which leads to security restrictions bypass and privilege escalation.

Remediation

Install update from vendor's website.

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-36712
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-36576
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-36698
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-36725