Microsoft Outlook 2016 Secure Connection Mail information disclosure

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CVSS Meta Temp Score
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6.1$0-$5k0.00

A vulnerability, which was classified as problematic, has been found in Microsoft Outlook 2016 (Groupware Software). This issue affects an unknown code of the component Secure Connection Handler. The manipulation with an unknown input leads to a information disclosure vulnerability (Mail). Using CWE to declare the problem leads to CWE-200. Impacted is confidentiality.

The bug was discovered 10/10/2017. The weakness was released 10/10/2017 by Florian Gattermeier, Heinrich WiederkehrERNW GmbH Simon Hofer and Stefan ViehböckSEC Consult Vulnerability Lab as KB4011162 as confirmed security update guide (Website). The advisory is shared at portal.msrc.microsoft.com. The identification of this vulnerability is CVE-2017-11776 since 07/31/2017. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available. The advisory points out:

An information disclosure vulnerability exists when Microsoft Outlook fails to establish a secure connection.

The vulnerability scanner Nessus provides a plugin with the ID 103752 (Security Updates for Outlook (October 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 local. The commercial vulnerability scanner Qualys is able to test this issue with plugin 110306 (Microsoft Office and Microsoft Office Services and Web Apps Security Update October 2017).

Applying the patch KB4011162 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 SecurityFocus (BID 101106), SecurityTracker (ID 1039542) and Tenable (103752). Entries connected to this vulnerability are available at 107698, 107703, 107727 and 107728.

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VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.1

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
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Exploitinginfoedit

Name: Mail
Class: Information disclosure / Mail
CWE: CWE-200
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

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Current Price Estimation: 🔍

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Nessus ID: 103752
Nessus Name: Security Updates for Outlook (October 2017)
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OpenVAS ID: 802136
OpenVAS Name: Microsoft Outlook 2016 Multiple Vulnerabilities (KB4011162)
OpenVAS File: 🔍
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Recommended: Patch
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Patch: KB4011162

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07/31/2017 🔍
10/10/2017 +70 days 🔍
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10/10/2017 +0 days 🔍
10/10/2017 +0 days 🔍
10/10/2017 +0 days 🔍
10/11/2017 +1 days 🔍
10/13/2017 +2 days 🔍
01/16/2021 +1191 days 🔍

Sourcesinfoedit

Vendor: https://www.microsoft.com/

Advisory: KB4011162
Researcher: Florian Gattermeier/Heinrich WiederkehrERNW GmbH Simon Hofer/Stefan ViehböckSEC Consult Vulnerability Lab
Status: Confirmed
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CVE: CVE-2017-11776 (🔍)
OVAL: 🔍

SecurityFocus: 101106
SecurityTracker: 1039542

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Entryinfoedit

Created: 10/11/2017 11:38 PM
Updated: 01/16/2021 02:49 PM
Changes: (3) advisory_person_name source_securityfocus_date source_securityfocus_class
Complete: 🔍

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