Microsoft SharePoint Enterprise Server 2010 SP2/2013 SP1/2016 cross site scripting

CVSS Meta Temp Score
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CTI Interest Score
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4.4$0-$5k0.00

A vulnerability was found in Microsoft SharePoint Enterprise Server 2010 SP2/2013 SP1/2016 (Groupware Software). It has been declared as problematic. This vulnerability affects an unknown function. The manipulation with an unknown input leads to a cross site scripting vulnerability. The CWE definition for the vulnerability is CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. As an impact it is known to affect integrity.

The bug was discovered 05/08/2018. The weakness was disclosed 05/08/2018 as confirmed security update guide (Website). The advisory is available at portal.msrc.microsoft.com. The public release has been coordinated in cooperation with the vendor. This vulnerability was named CVE-2018-8156 since 03/14/2018. The attack can be initiated remotely. The successful exploitation requires a single authentication. Successful exploitation requires user interaction by the victim. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1059.007 by the MITRE ATT&CK project. The advisory points out:

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 vulnerability scanner Nessus provides a plugin with the ID 109616 (Security Updates for Microsoft SharePoint Server and Microsoft Project Server (May 2018)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Windows : Microsoft Bulletins and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 110317 (Microsoft Office and Microsoft Office Services and Web Apps Security Update May 2018).

Applying a patch is able to eliminate this problem. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (109616) and SecurityFocus (BID 104048†). The entries VDB-117468, VDB-117469, VDB-117470 and VDB-117471 are pretty similar.

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CPE 2.3info

CPE 2.2info

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CVSSv3info

VulDB Meta Base Score: 4.4
VulDB Meta Temp Score: 4.4

VulDB Base Score: 3.5
VulDB Temp Score: 3.4
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NVD Base Score: 5.4
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CVSSv2info

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Exploitinginfo

Class: Cross site scripting
CWE: CWE-79 / CWE-94 / CWE-74
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

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Nessus ID: 109616
Nessus Name: Security Updates for Microsoft SharePoint Server and Microsoft Project Server (May 2018)
Nessus File: 🔍
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Threat Intelligenceinfo

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Countermeasuresinfo

Recommended: Patch
Status: 🔍

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Timelineinfo

03/14/2018 🔍
05/08/2018 +55 days 🔍
05/08/2018 +0 days 🔍
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05/08/2018 +0 days 🔍
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05/09/2018 +0 days 🔍
05/09/2018 +0 days 🔍
03/11/2023 +1767 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: portal.msrc.microsoft.com
Status: Confirmed
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2018-8156 (🔍)
OVAL: 🔍

SecurityFocus: 104048 - Microsoft SharePoint Server CVE-2018-8156 Remote Privilege Escalation Vulnerability
SecurityTracker: 1040856

See also: 🔍

Entryinfo

Created: 05/09/2018 03:03 PM
Updated: 03/11/2023 10:18 AM
Changes: 05/09/2018 03:03 PM (72), 02/03/2020 03:24 PM (5), 03/11/2023 10:18 AM (5)
Complete: 🔍
Cache ID: 18:451:40

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