Detections
Analytics
Security Updates for Microsoft Office Online Server and Microsoft Office Web Apps (April 2021)
high Nessus Plugin ID 148538
Language:
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. An unauthenticated, local attacker can exploit this to bypass authentication and execute unauthorized arbitrary commands. (CVE-2021-28451, CVE-2021-28453, CVE-2021-28454)
- A information disclosure vulnerability exists. An unauthenticated, local attacker can exploit this to disclose potentially sensitive information. (CVE-2021-28456)
Solution
Microsoft has released the following security updates to address this issue:-KB4504705
-KB4504729
-KB4504714
See Also
https://support.microsoft.com/en-us/help/4504705
Plugin Details
Severity: High
ID: 148538
File Name: smb_nt_ms21_apr_office_web.nasl
Version: 1.5
Type: local
Agent: windows
Family: Windows : Microsoft Bulletins
Published: 4/14/2021
Updated: 1/4/2024
Supported Sensors: Nessus Agent, 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-2021-28454
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:office_online_server, cpe:/a:microsoft:office_web_apps
Required KB Items: SMB/MS_Bulletin_Checks/Possible
Exploit Ease: No known exploits are available
Patch Publication Date: 4/13/2021
Vulnerability Publication Date: 4/13/2021
Reference Information
CVE: CVE-2021-28451, CVE-2021-28453, CVE-2021-28454, CVE-2021-28456