Microsoft Security Advisory 4033453: Vulnerability in Azure AD Connect Could Allow Elevation of Privilege

High Nessus Plugin ID 101113

Synopsis

An application installed on the remote Windows host is affected by an elevation of privilege vulnerability.

Description

The version of Azure Active Directory (AD) Connect installed on the remote Windows host is prior to 1.1.553.0, and the password writeback setting is enabled. It is, therefore, affected by an elevation of privilege vulnerability due to improper permissions being granted when enabling the password writeback setting. An authenticated, remote attacker can exploit this to reset users' passwords and gain access to arbitrary on-premises AD privileged user accounts.

Note that Nessus did not verify if the reset password permission was granted to on-premises AD user accounts.

Solution

Upgrade to Azure AD Connect version 1.1.553.0 or later. Alternatively, apply the mitigation steps listed in the vendor advisory.

See Also

https://docs.microsoft.com/en-us/security-updates/SecurityAdvisories/2017/4033453

Plugin Details

Severity: High

ID: 101113

File Name: smb_kb4033453.nasl

Version: 1.5

Type: local

Agent: windows

Family: Windows

Published: 2017/06/29

Updated: 2018/11/15

Dependencies: 101114

Risk Information

Risk Factor: High

CVSS v2.0

Base Score: 7.4

Temporal Score: 5.5

Vector: CVSS2#AV:A/AC:M/Au:S/C:C/I:C/A:C

Temporal Vector: CVSS2#E:U/RL:OF/RC:C

CVSS v3.0

Base Score: 7.1

Temporal Score: 6.2

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

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

Vulnerability Information

CPE: x-cpe:/a:microsoft:azure_active_directory_connect

Exploit Available: false

Exploit Ease: No known exploits are available

Patch Publication Date: 2017/06/27

Vulnerability Publication Date: 2017/06/27

Reference Information

CVE: CVE-2017-8613

BID: 99294