Windows SeriousSAM HiveNightmare Registry Read Vulnerability

high Nessus Plugin ID 152100

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Synopsis

The remote Windows host is affected by an elevation of privilege vulnerability.

Description

An elevation of privilege vulnerability exists because of overly permissive Access Control Lists (ACLs) on multiple system files, including the Security Accounts Manager (SAM) database. An attacker who successfully exploited this vulnerability could run arbitrary code with SYSTEM privileges. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.

Solution

Per the vendor advisory, restrict access to the contents of %windir%\system32\config and Delete Volume Shadow Copy Service (VSS) shadow copies.

Plugin Details

Severity: High

ID: 152100

File Name: smb_nt_serious_sam_check.nbin

Version: 1.147

Type: local

Agent: windows

Family: Windows

Published: 7/27/2021

Updated: 11/18/2024

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Critical

Score: 9.7

CVSS v2

Risk Factor: Medium

Base Score: 4.6

Temporal Score: 4

Vector: CVSS2#AV:L/AC:L/Au:N/C:P/I:P/A:P

CVSS Score Source: CVE-2021-36934

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 7.5

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

Temporal Vector: CVSS:3.0/E:H/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:microsoft:windows

Required KB Items: SMB/login, SMB/password, SMB/Services/Enumerated

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 7/20/2021

Vulnerability Publication Date: 7/20/2021

CISA Known Exploited Vulnerability Due Dates: 2/24/2022

Exploitable With

CANVAS (CANVAS)

Reference Information

CVE: CVE-2021-36934

IAVA: 2021-A-0374-S

Detections

Analytics