Security Updates for Microsoft Office Web Apps (August 2018)

medium Nessus Plugin ID 111699

Synopsis

The Microsoft Office Web Apps installation on the remote host is missing a security update.

Description

The Microsoft Office Web Apps installation on the remote host is missing a security update. It is, therefore, affected by the following vulnerability :

- 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-2018-8378)

Solution

Microsoft has released the following security updates to address this issue:
-KB4022238
-KB4032220

See Also

http://www.nessus.org/u?2292b1eb

http://www.nessus.org/u?faf56be8

Plugin Details

Severity: Medium

ID: 111699

File Name: smb_nt_ms18_aug_office_web.nasl

Version: 1.6

Type: local

Agent: windows

Published: 8/14/2018

Updated: 11/4/2019

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.2

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

CVSS Score Source: CVE-2018-8378

CVSS v3

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 4.8

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

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

Vulnerability Information

CPE: cpe:/a:microsoft:office_web_apps

Required KB Items: SMB/MS_Bulletin_Checks/Possible

Exploit Ease: No known exploits are available

Patch Publication Date: 8/14/2018

Vulnerability Publication Date: 8/14/2018

Reference Information

CVE: CVE-2018-8378

MSFT: MS18-4022238, MS18-4032220

MSKB: 4022238, 4032220