Security Updates for Microsoft Office Web Apps (January 2019)

high Nessus Plugin ID 121026

Synopsis

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

Description

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

- A remote code execution vulnerability exists in Microsoft Word software when it fails to properly handle objects in memory. An attacker who successfully exploited the vulnerability could use a specially crafted file to perform actions in the security context of the current user. For example, the file could then take actions on behalf of the logged-on user with the same permissions as the current user. (CVE-2019-0585)

- An information disclosure vulnerability exists when Microsoft Word macro buttons are used improperly. An attacker who successfully exploited this vulnerability could read arbitrary files from a targeted system.
(CVE-2019-0561)

Solution

Microsoft has released the following security updates to address this issue:
-KB4461620
-KB4461633

See Also

http://www.nessus.org/u?10cef958

http://www.nessus.org/u?e9b52ea3

Plugin Details

Severity: High

ID: 121026

File Name: smb_nt_ms19_jan_office_web.nasl

Version: 1.2

Type: local

Agent: windows

Published: 1/8/2019

Updated: 10/31/2019

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

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-2019-0585

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 7.7

Vector: CVSS:3.0/AV:N/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_web_apps

Required KB Items: SMB/MS_Bulletin_Checks/Possible

Exploit Ease: No known exploits are available

Patch Publication Date: 1/8/2019

Vulnerability Publication Date: 1/8/2019

Reference Information

CVE: CVE-2019-0561, CVE-2019-0585

MSFT: MS19-4461620, MS19-4461633

MSKB: 4461620, 4461633