Security Updates for Microsoft Office Viewer Products (December 2018)

high Nessus Plugin ID 119609

Synopsis

The Microsoft Office Viewer Products are affected by multiple vulnerabilities.

Description

The Microsoft Office Viewer Products are missing security updates. It is, therefore, affected by multiple vulnerabilities :

- An information disclosure vulnerability exists when Microsoft Excel 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 Excel software. The security update addresses the vulnerability by properly initializing the affected variable. (CVE-2018-8627)

- A remote code execution vulnerability exists in Microsoft PowerPoint software when the 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-2018-8628)

Solution

Microsoft has released the following security updates to address this issue:
-KB2597975
-KB4461566

See Also

http://www.nessus.org/u?b440e7f7

http://www.nessus.org/u?60525be4

Plugin Details

Severity: High

ID: 119609

File Name: smb_nt_ms18_dec_office_viewers.nasl

Version: 1.3

Type: local

Agent: windows

Published: 12/13/2018

Updated: 11/1/2019

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-2018-8628

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:excel_viewer, cpe:/a:microsoft:powerpoint_viewer

Required KB Items: SMB/MS_Bulletin_Checks/Possible

Exploit Ease: No known exploits are available

Patch Publication Date: 12/11/2018

Vulnerability Publication Date: 12/11/2018

Reference Information

CVE: CVE-2018-8627, CVE-2018-8628

MSFT: MS18-2597975, MS18-4461566

MSKB: 2597975, 4461566