Microsoft Outlook 2016 Secure Connection Mail information disclosure

CVSS Meta Temp Score
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CTI Interest Score
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6.1$0-$5k0.03

Summaryinfo

A vulnerability, which was classified as problematic, was found in Microsoft Outlook 2016. Affected is an unknown function of the component Secure Connection Handler. The manipulation leads to information disclosure (Mail). This vulnerability is traded as CVE-2017-11776. It is possible to launch the attack remotely. There is no exploit available. It is recommended to apply a patch to fix this issue. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Detailsinfo

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. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. Impacted is confidentiality. The summary by CVE is:

Microsoft Outlook 2016 allows an attacker to obtain the email content of a user, due to how Outlook 2016 discloses user email content, aka "Microsoft Outlook Information Disclosure Vulnerability."

The bug was discovered 10/10/2017. The weakness was released 10/10/2017 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. MITRE ATT&CK project uses the attack technique T1592 for this issue. 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 l. 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 Tenable (103752) and SecurityFocus (BID 101106†). Entries connected to this vulnerability are available at VDB-107698, VDB-107703, VDB-107727 and VDB-107728. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.3

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

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Name: Mail
Class: Information disclosure / Mail
CWE: CWE-200 / CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 103752
Nessus Name: Security Updates for Outlook (October 2017)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 802136
OpenVAS Name: Microsoft Outlook 2016 Multiple Vulnerabilities (KB4011162)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

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

Patch: KB4011162

Timelineinfo

07/31/2017 🔍
10/10/2017 +70 days 🔍
10/10/2017 +0 days 🔍
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 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: KB4011162
Researcher: Florian Gattermeier, Heinrich WiederkehrERNW GmbH Simon Hofer, Stefan ViehböckSEC Consult Vulnerability Lab
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-11776 (🔍)
GCVE (CVE): GCVE-0-2017-11776
GCVE (VulDB): GCVE-100-107741

OVAL: 🔍

SecurityFocus: 101106
SecurityTracker: 1039542

See also: 🔍

Entryinfo

Created: 10/11/2017 23:38
Updated: 01/16/2021 14:49
Changes: 10/11/2017 23:38 (80), 11/23/2019 19:44 (3), 01/16/2021 14:45 (2), 01/16/2021 14:49 (3)
Complete: 🔍
Cache ID: 216:D72:103

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