SB2021081022 - Multiple vulnerabilities in Microsoft Windows Services for NFS ONCRPC XDR Driver

Description

This security bulletin contains information about 5 secuirty vulnerabilities.

1) Information disclosure (CVE-ID: CVE-2021-36933)

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to excessive data output by the application in the Windows Services for NFS ONCRPC XDR Driver. A remote attacker can gain unauthorized access to sensitive information on the system.

2) Code Injection (CVE-ID: CVE-2021-26432)

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to improper input validation in the Windows Services for NFS ONCRPC XDR Driver. A remote attacker can send a specially crafted request and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

3) Information disclosure (CVE-ID: CVE-2021-26433)

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to excessive data output by the application in the Windows Services for NFS ONCRPC XDR Driver. A remote attacker can gain unauthorized access to sensitive information on the system.

4) Information disclosure (CVE-ID: CVE-2021-36926)

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to excessive data output by the application in the Windows Services for NFS ONCRPC XDR Driver. A remote attacker can gain unauthorized access to sensitive information on the system.

5) Information disclosure (CVE-ID: CVE-2021-36932)

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to excessive data output by the application in the Windows Services for NFS ONCRPC XDR Driver. A remote attacker 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-2021-36933
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26432
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26433
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-36926
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-36932