Microsoft Outlook 2010 SP1/2013 SP1/2016 DLL Loader access control

CVSS Meta Temp Score
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CTI Interest Score
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6.7$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in Microsoft Outlook 2010 SP1/2013 SP1/2016. This impacts an unknown function of the component DLL Loader. This manipulation causes access control. This vulnerability is tracked as CVE-2017-8506. The attack is possible to be carried out remotely. No exploit exists. Applying a patch is the recommended action to fix this issue.

Detailsinfo

A vulnerability has been found in Microsoft Outlook 2010 SP1/2013 SP1/2016 (Groupware Software) and classified as critical. Affected by this vulnerability is an unknown functionality of the component DLL Loader. The manipulation with an unknown input leads to a access control vulnerability. The CWE definition for the vulnerability is CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. As an impact it is known to affect confidentiality, integrity, and availability.

The bug was discovered 06/13/2017. The weakness was disclosed 06/13/2017 by Security Team with Microsoft as KB3191938 as confirmed security update guide (Website). The advisory is shared at portal.msrc.microsoft.com. This vulnerability is known as CVE-2017-8506 since 05/03/2017. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1068 for this issue. The advisory points out:

A remote code execution vulnerability exists when Office improperly validates input before loading dynamic link library (DLL) files. An attacker who successfully exploited this vulnerability could take control of an 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 100782 (Security Update for Microsoft Office Products (June 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 110299 (Microsoft Office and Microsoft Office Services and Web Apps Security Update June 2017).

Applying the patch KB3191938 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 databases at Tenable (100782) and SecurityFocus (BID 98811†). The entries VDB-102373, VDB-102375, VDB-102402 and VDB-102403 are pretty similar. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.0
VulDB Meta Temp Score: 6.9

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
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Exploitinginfo

Class: Access control
CWE: CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 100782
Nessus Name: Security Update for Microsoft Office Products (June 2017)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 802136
OpenVAS Name: Microsoft Outlook 2016 Multiple Vulnerabilities (KB3191932)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Patch: KB3191938

Timelineinfo

05/03/2017 🔍
06/13/2017 +41 days 🔍
06/13/2017 +0 days 🔍
06/13/2017 +0 days 🔍
06/13/2017 +0 days 🔍
06/14/2017 +1 days 🔍
06/14/2017 +0 days 🔍
06/14/2017 +0 days 🔍
12/27/2020 +1292 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: KB3191938
Researcher: Security Team
Organization: Microsoft
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-8506 (🔍)
GCVE (CVE): GCVE-0-2017-8506
GCVE (VulDB): GCVE-100-102397

OVAL: 🔍

SecurityFocus: 98811 - Microsoft Office CVE-2017-8506 DLL Loading Remote Code Execution Vulnerability
SecurityTracker: 1038666

See also: 🔍

Entryinfo

Created: 06/14/2017 10:53
Updated: 12/27/2020 18:22
Changes: 06/14/2017 10:53 (80), 10/17/2019 11:19 (7), 12/27/2020 18:22 (3)
Complete: 🔍
Cache ID: 216::103

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