SB2021101227 - Multiple vulnerabilities in Microsoft Windows Kernel

Description

This security bulletin contains information about 2 secuirty vulnerabilities.

1) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2021-41335)

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.

2) Information disclosure (CVE-ID: CVE-2021-41336)

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.

Remediation

Install update from vendor's website.

References

• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-41335
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-41336