Microsoft Exchange Server Elevation of Privilege Vulnerability (November 2018)

high Nessus Plugin ID 118978

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Synopsis

The mail server application on the remote Windows host is affected by a privilege escalation vulnerability.

Description

The Microsoft Exchange install on the remote host contains an unspecified flaw that allows an authenticated, man-in-the-middle attacker to impersonate another user and escalate privileges.

Solution

Delete the following registry value :

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Lsa\DisableLoopbackCheck

as shown in the advisory.

Plugin Details

Severity: High

ID: 118978

File Name: smb_nt_ms18_nov_exchange_server_CVE-2018-8581.nasl

Version: 1.8

Type: local

Agent: windows

Family: Windows

Published: 11/16/2018

Updated: 4/25/2023

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Medium

Base Score: 5.8

Temporal Score: 4.8

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

CVSS Score Source: CVE-2018-8581

CVSS v3

Risk Factor: High

Base Score: 7.4

Temporal Score: 6.9

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

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

Vulnerability Information

CPE: cpe:/o:microsoft:exchange_server

Required KB Items: installed_sw/Microsoft Exchange

Exploit Available: true

Exploit Ease: Exploits are available

Vulnerability Publication Date: 11/13/2018

CISA Known Exploited Vulnerability Due Dates: 3/17/2022

Reference Information

CVE: CVE-2018-8581

BID: 105837

Detections

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