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Security Updates for Microsoft Office Online Server (February 2020)

medium Nessus Plugin ID 133621

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Synopsis

The Microsoft Office Online Server installation on the remote host is missing a security update.

Description

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

 - A spoofing vulnerability exists when Office Online Server does not validate origin in cross-origin communications correctly. An attacker could exploit the vulnerability by sending a specially crafted request to an affected site. The attacker who successfully exploited the vulnerability could then perform cross- origin attacks on affected systems. These attacks could allow the attacker to read content that the attacker is not authorized to read, and use the victim's identity to take actions on the site on behalf of the victim. The victim needs to be authenticated for an attacker to compromise the victim. The security update addresses the vulnerability by ensuring that Office Online Server properly validates origins. (CVE-2020-0695)

Solution

Microsoft has released KB4484254 to address this issue.

See Also

http://www.nessus.org/u?3313a689

Plugin Details

Severity: Medium

ID: 133621

File Name: smb_nt_ms20_feb_office_web.nasl

Version: 1.5

Type: local

Agent: windows

Published: 2/11/2020

Updated: 3/13/2020

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 2.5

CVSS v2

Risk Factor: Medium

Base Score: 5.8

Temporal Score: 4.3

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

CVSS Score Source: CVE-2020-0695

CVSS v3

Risk Factor: Medium

Base Score: 5.4

Temporal Score: 4.7

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

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

Vulnerability Information

CPE: cpe:/a:microsoft:office_online_server

Required KB Items: SMB/MS_Bulletin_Checks/Possible

Exploit Ease: No known exploits are available

Patch Publication Date: 2/11/2020

Vulnerability Publication Date: 2/11/2020

Reference Information

CVE: CVE-2020-0695

MSFT: MS20-4484254

MSKB: 4484254