Security Updates for Microsoft Office Online Server and Microsoft Office Web Apps (March 2018)

high Nessus Plugin ID 108299

Synopsis

The Microsoft Office Online Server or Microsoft Office Web Apps installation on the remote host is affected by multiple vulnerabilities.

Description

The Microsoft Office Online Server or Microsoft Office Web Apps installation on the remote host is missing security updates. It is, therefore, affected by multiple vulnerabilities :

- An information disclosure vulnerability exists when Microsoft Office software reads out of bound memory due to an uninitialized variable, which could disclose the contents of memory. An attacker who successfully exploited the vulnerability could view out of bound memory. Exploitation of the vulnerability requires that a user open a specially crafted file with an affected version of Microsoft Office software. The security update addresses the vulnerability by properly initializing the affected variable. (CVE-2018-0919)

- A remote code execution vulnerability exists in Microsoft Office software when the Office software fails to properly handle objects in memory. An attacker who successfully exploited the vulnerability could run arbitrary code in the context of the current user. If the current user is logged on with administrative user rights, an attacker could take control of the affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. (CVE-2018-0922)

Solution

Microsoft has released the following security updates to address this issue:
-KB4011023
-KB4011692
-KB4011709

See Also

http://www.nessus.org/u?588d8ddf

http://www.nessus.org/u?7e46219d

http://www.nessus.org/u?f9705e6c

Plugin Details

Severity: High

ID: 108299

File Name: smb_nt_ms18_mar_office_web.nasl

Version: 1.8

Type: local

Agent: windows

Published: 3/13/2018

Updated: 12/11/2020

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: High

Base Score: 9.3

Temporal Score: 6.9

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

CVSS Score Source: CVE-2018-0922

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.8

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

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

Vulnerability Information

CPE: cpe:/a:microsoft:office_online_server, cpe:/a:microsoft:office_web_apps

Required KB Items: SMB/MS_Bulletin_Checks/Possible

Exploit Ease: No known exploits are available

Patch Publication Date: 3/13/2018

Vulnerability Publication Date: 3/13/2018

Reference Information

CVE: CVE-2018-0919, CVE-2018-0922

BID: 103311, 103314

IAVA: 2018-A-0077-S

MSFT: MS18-4011023, MS18-4011692, MS18-4011709

MSKB: 4011023, 4011692, 4011709