KB5004958: Windows Server 2012 R2 OOB Security Update RCE (July 2021)

high Nessus Plugin ID 151477

Synopsis

The remote Windows host is affected by a remote code execution vulnerabilty.

Description

A remote command execution vulnerability exists in Windows Print Spooler service improperly performs privileged file operations. An authenticated, remote attacker can exploit this to bypass and run arbitrary code with SYSTEM privileges.

Solution

Apply Cumulative Update 5004958

See Also

https://support.microsoft.com/en-us/help/5004954

https://support.microsoft.com/en-us/help/5004958

Plugin Details

Severity: High

ID: 151477

File Name: smb_nt_ms21_jul_5004958.nasl

Version: 1.6

Type: local

Agent: windows

Published: 7/8/2021

Updated: 8/30/2022

Supported Sensors: Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure

Risk Information

VPR

Risk Factor: Critical

Score: 9.8

CVSS v2

Risk Factor: High

Base Score: 9

Temporal Score: 7.8

Vector: AV:N/AC:L/Au:S/C:C/I:C/A:C

Temporal Vector: E:H/RL:OF/RC:C

CVSS Score Source: CVE-2021-34527

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 8.4

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: E:H/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:microsoft:windows

Required KB Items: SMB/MS_Bulletin_Checks/Possible

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 7/1/2021

Vulnerability Publication Date: 7/1/2021

CISA Known Exploited Dates: 7/20/2021

Exploitable With

CANVAS (CANVAS)

Reference Information

CVE: CVE-2021-34527

IAVA: 2021-A-0299

MSKB: 5004954, 5004958

MSFT: MS21-5004954, MS21-5004958