SB2021081022 - Multiple vulnerabilities in Microsoft Windows Services for NFS ONCRPC XDR Driver
Published: August 10, 2021
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 5 vulnerabilities.
1) Information disclosure (CVE-ID: CVE-2021-36933)
CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
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)
CWE-ID: CWE-94 - Improper Control of Generation of Code ('Code Injection')
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
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)
CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
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)
CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
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)
CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
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