SB2021091438 - Multiple vulnerabilities in Microsoft Windows Redirected Drive Buffering SubSystem Driver

Description

This security bulletin contains information about 3 secuirty vulnerabilities.

1) Information disclosure (CVE-ID: CVE-2021-36969)

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 Redirected Drive Buffering SubSystem Driver. A local user can gain unauthorized access to sensitive information on the system.

2) Information disclosure (CVE-ID: CVE-2021-38635)

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 Redirected Drive Buffering SubSystem Driver. A local user can gain unauthorized access to sensitive information on the system.

3) Information disclosure (CVE-ID: CVE-2021-38636)

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 Redirected Drive Buffering SubSystem Driver. 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-2021-36969
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-38635
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-38636