Security Update for Microsoft Office Excel Products (September 2017)

high Nessus Plugin ID 103138
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VPR Score: 6.7

Synopsis

The Microsoft Excel Products are affected by multiple vulnerabilities.

Description

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

- A remote code execution vulnerability exists in Microsoft Office 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. Exploitation of this vulnerability requires that a user open a specially crafted file with an affected version of Microsoft Office software. In an email attack scenario, an attacker could exploit the vulnerability by sending the specially crafted file to the user and convincing the user to open the file. In a web-based attack scenario, an attacker could host a website (or leverage a compromised website that accepts or hosts user-provided content) that contains a specially crafted file that is designed to exploit the vulnerability. However, an attacker would have no way to force the user to visit the website. Instead, an attacker would have to convince the user to click a link, typically by way of an enticement in an email or Instant Messenger message, and then convince the user to open the specially crafted file. The security update addresses the vulnerability by correcting how Microsoft Office handles files in memory.
(CVE-2017-8631, CVE-2017-8632)

Solution

Microsoft has released the following security updates to address this issue:
-KB4011108
-KB4011050
-KB4011061
-KB4011062

See Also

http://www.nessus.org/u?9d426bc7

http://www.nessus.org/u?b2583452

http://www.nessus.org/u?8028c458

http://www.nessus.org/u?7194ec3f

Plugin Details

Severity: High

ID: 103138

File Name: smb_nt_ms17_sep_excel.nasl

Version: 1.8

Type: local

Agent: windows

Published: 9/12/2017

Updated: 11/12/2019

Dependencies: office_installed.nasl, smb_hotfixes.nasl, ms_bulletin_checks_possible.nasl

Risk Information

Risk Factor: High

VPR Score: 6.7

CVSS Score Source: CVE-2017-8632

CVSS v2.0

Base Score: 9.3

Temporal Score: 6.9

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

Temporal Vector: E:U/RL:OF/RC:C

CVSS v3.0

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: E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:microsoft:excel

Required KB Items: SMB/MS_Bulletin_Checks/Possible

Exploit Ease: No known exploits are available

Patch Publication Date: 9/12/2017

Vulnerability Publication Date: 9/12/2017

Reference Information

CVE: CVE-2017-8631, CVE-2017-8632

BID: 100734, 100751

MSKB: 4011108, 4011062, 4011061

MSFT: MS17-4011050, MS17-4011108, MS17-4011062, MS17-4011061

IAVA: 2017-A-0274