Detections
Analytics
Security Updates for Microsoft Sharepoint Server (July 2018)
high Nessus Plugin ID 110993
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Synopsis
The Microsoft Sharepoint Server installation on the remote host is affected by multiple vulnerabilities.Description
The Microsoft Sharepoint Server installation on the remote host is missing security updates. It is, therefore, affected by multiple vulnerabilities :- A remote code execution vulnerability exists in Microsoft SharePoint when the software fails to check the source markup of an application package. An attacker who successfully exploited the vulnerability could run arbitrary code in the context of the SharePoint application pool and the SharePoint server farm account.
Exploitation of this vulnerability requires that a user uploads a specially crafted SharePoint application package to an affected versions of SharePoint. The security update addresses the vulnerability by correcting how SharePoint checks the source markup of application packages. (CVE-2018-8300)
- An elevation of privilege vulnerability exists when Microsoft SharePoint Server does not properly sanitize a specially crafted web request to an affected SharePoint server. An authenticated attacker could exploit the vulnerability by sending a specially crafted request to an affected SharePoint server. The attacker who successfully exploited the vulnerability could then perform cross-site scripting attacks on affected systems and run script in the security context of the current user. These attacks could allow the attacker to read content that the attacker is not authorized to read, use the victim's identity to take actions on the SharePoint site on behalf of the user, such as change permissions and delete content, and inject malicious content in the browser of the user. The security update addresses the vulnerability by helping to ensure that SharePoint Server properly sanitizes web requests. (CVE-2018-8299, CVE-2018-8323)
Solution
Microsoft has released the following security updates to address this issue:-KB4022243
-KB4022228
-KB4022235
See Also
http://www.nessus.org/u?b68cf0a6
Plugin Details
Severity: High
ID: 110993
File Name: smb_nt_ms18_jul_office_sharepoint.nasl
Version: 1.9
Type: local
Agent: windows
Family: Windows : Microsoft Bulletins
Published: 7/10/2018
Updated: 4/12/2023
Supported Sensors: Nessus Agent, Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 5.9
CVSS v2
Risk Factor: Medium
Base Score: 6.5
Temporal Score: 4.8
Vector: CVSS2#AV:N/AC:L/Au:S/C:P/I:P/A:P
CVSS Score Source: CVE-2018-8300
CVSS v3
Risk Factor: High
Base Score: 8.8
Temporal Score: 7.7
Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/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:project_server, cpe:/a:microsoft:office, cpe:/a:microsoft:sharepoint_server, cpe:/a:microsoft:sharepoint_foundation
Required KB Items: SMB/MS_Bulletin_Checks/Possible
Exploit Ease: No known exploits are available
Patch Publication Date: 7/10/2018
Vulnerability Publication Date: 7/10/2018