Microsoft PowerPoint 2016 memory corruption

CVSS Meta Temp Score
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6.3$0-$5k0.00

A vulnerability was found in Microsoft PowerPoint 2016 (Presentation Software) and classified as critical. This issue affects an unknown part. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

A remote code execution vulnerability exists in Microsoft PowerPoint 2016, Microsoft SharePoint Enterprise Server 2016, and Office Online Server when they fail to properly handle objects in memory, aka "PowerPoint Remote Code Execution Vulnerability". This CVE ID is unique from CVE-2017-8742.

The bug was discovered 09/12/2017. The weakness was shared 09/12/2017 with Jaanus Kp Clarified Security as KB4011041 as confirmed security update guide (Website). The advisory is shared at portal.msrc.microsoft.com. The identification of this vulnerability is CVE-2017-8743 since 05/03/2017. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. The advisory points out:

A remote code execution vulnerability exists in Microsoft Office software when the software fails to properly handle objects in memory. An attacker who successfully exploited the vulnerability could run arbitrary code in the context of the current user. If the current user is logged on with administrative user rights, an attacker could take control of the affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. Users whose accounts are configured to have fewer user rights on the system could be less impacted than users who operate with administrative user rights.

The vulnerability scanner Nessus provides a plugin with the ID 103141 (Security Updates for Microsoft Sharepoint Server (September 2017)), 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 110303 (Microsoft Office and Microsoft Office Services and Web Apps Security Update September 2017).

Applying the patch KB4011041 is able to eliminate this problem. The bugfix is ready for download at catalog.update.microsoft.com. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (103141). The entries 106470, 106473, 106474 and 106475 are related to this item.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

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CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.4

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
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NVD Base Score: 7.8
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CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

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Nessus ID: 103141
Nessus Name: Security Updates for Microsoft Sharepoint Server (September 2017)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
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OpenVAS ID: 802136
OpenVAS Name: Microsoft SharePoint Enterprise Server 2016 Multiple Vulnerabilities (KB4011127)
OpenVAS File: 🔍
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Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Patch
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Patch: KB4011041

Timelineinfo

05/03/2017 🔍
09/12/2017 +132 days 🔍
09/12/2017 +0 days 🔍
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09/12/2017 +0 days 🔍
09/12/2017 +0 days 🔍
09/12/2017 +0 days 🔍
09/13/2017 +1 days 🔍
01/12/2021 +1217 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: KB4011041
Researcher: Jaanus Kp Clarified Security working with Trend Micro's Zero Day Initiative
Organization: Jaanus Kp Clarified Security
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-8743 (🔍)
OVAL: 🔍

SecurityTracker: 1039323
SecurityFocus: 100746 - Microsoft PowerPoint CVE-2017-8743 Remote Code Execution Vulnerability

See also: 🔍

Entryinfo

Created: 09/13/2017 14:34
Updated: 01/12/2021 12:05
Changes: 09/13/2017 14:34 (73), 11/15/2019 15:44 (12), 01/12/2021 12:00 (2), 01/12/2021 12:05 (1)
Complete: 🔍

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