Detections
Analytics
Security Updates for Microsoft Office Web Apps (July 2020)
high Nessus Plugin ID 138469
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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 :- An information disclosure vulnerability exists when Microsoft Office improperly discloses the contents of its memory. An attacker who exploited the vulnerability could use the information to compromise the users computer or data. (CVE-2020-1445)
- 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-2020-1446, CVE-2020-1447, CVE-2020-1448)
- A spoofing vulnerability exists when an Office Web Apps server does not properly sanitize a specially crafted request. An authenticated attacker could exploit the vulnerability by sending a specially crafted request to an affected Office Web Apps server. The attacker who successfully exploited this vulnerability could then perform cross-site scripting attacks on affected systems and run script in the security context of the current user. For the vulnerability to be exploited, a user must click a specially crafted URL that takes the user to a targeted Office Web App site. (CVE-2020-1442)
- 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-2020-1342)
Solution
Microsoft has released the following security updates to address this issue:-KB4484357
-KB4484381
-KB4484451
See Also
http://www.nessus.org/u?1ce2dd72
Plugin Details
Severity: High
ID: 138469
File Name: smb_nt_ms20_jul_office_web.nasl
Version: 1.5
Type: local
Agent: windows
Family: Windows : Microsoft Bulletins
Published: 7/14/2020
Updated: 8/14/2020
Supported Sensors: Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 6.7
CVSS v2
Risk Factor: Medium
Base Score: 6.8
Temporal Score: 5
Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P
CVSS Score Source: CVE-2020-1448
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: 7/14/2020
Vulnerability Publication Date: 7/14/2020
Reference Information
CVE: CVE-2020-1342, CVE-2020-1442, CVE-2020-1445, CVE-2020-1446, CVE-2020-1447, CVE-2020-1448