Microsoft Excel up to 2016 Security Feature Macro 7pk security

CVSS Meta Temp Score
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CTI Interest Score
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5.7$0-$5k0.00

Summaryinfo

A vulnerability has been found in Microsoft Excel 2007 SP3/2010 SP2/2013 RT SP1/2013 SP1/2016 and classified as critical. Affected by this issue is some unknown functionality of the component Security Feature. The manipulation leads to 7pk security (Macro). This vulnerability is referenced as CVE-2017-11877. Remote exploitation of the attack is possible. No exploit is available. It is suggested to install a patch to address this issue.

Detailsinfo

A vulnerability was found in Microsoft Excel 2007 SP3/2010 SP2/2013 RT SP1/2013 SP1/2016 (Spreadsheet Software). It has been rated as critical. This issue affects an unknown part of the component Security Feature. The manipulation with an unknown input leads to a 7pk security vulnerability (Macro). Using CWE to declare the problem leads to CWE-254. Impacted is confidentiality, integrity, and availability.

The bug was discovered 11/14/2017. The weakness was published 11/14/2017 with Microsoft as KB4011197 as confirmed security update guide (Website). The advisory is shared at portal.msrc.microsoft.com. The identification of this vulnerability is CVE-2017-11877 since 07/31/2017. 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. MITRE ATT&CK project uses the attack technique T1211 for this issue. The advisory points out:

A security feature bypass vulnerability exists in Microsoft Office software by not enforcing macro settings on an Excel document. The security feature bypass by itself does not allow arbitrary code execution. To successfully exploit the vulnerability, an attacker would have to embed a control in an Excel worksheet that specifies a macro should be run. To exploit the vulnerability, an attacker would have to convince a user to open a specially crafted file with an affected version of Microsoft Office software. The security update addresses the vulnerability by enforcing macro settings on Excel documents.

The vulnerability scanner Nessus provides a plugin with the ID 104559 (Security Updates for Microsoft Office Viewer Products (November 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 110308 (Microsoft Office and Microsoft Office Services and Web Apps Security Update November 2017).

Applying the patch KB4011197 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 (104559) and SecurityFocus (BID 101747†). Similar entries are available at VDB-109381, VDB-109386, VDB-109388 and VDB-109391. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.8

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

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
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Exploitinginfo

Name: Macro
Class: 7pk security / Macro
CWE: CWE-254
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: 104559
Nessus Name: Security Updates for Microsoft Office Viewer Products (November 2017)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 801246
OpenVAS Name: Microsoft Excel 2010 Service Pack 2 Multiple Vulnerabilities (KB4011197)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Patch
Status: 🔍

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

Patch: KB4011197

Timelineinfo

07/31/2017 🔍
11/14/2017 +106 days 🔍
11/14/2017 +0 days 🔍
11/14/2017 +0 days 🔍
11/14/2017 +0 days 🔍
11/14/2017 +0 days 🔍
11/14/2017 +0 days 🔍
11/15/2017 +1 days 🔍
01/23/2021 +1165 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: KB4011197
Researcher: Jonathan Birch Microsoft Corporation.
Organization: Microsoft
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-11877 (🔍)
GCVE (CVE): GCVE-0-2017-11877
GCVE (VulDB): GCVE-100-109385

OVAL: 🔍

SecurityFocus: 101747 - Microsoft Excel CVE-2017-11877 Security Bypass Vulnerability
SecurityTracker: 1039783

See also: 🔍

Entryinfo

Created: 11/15/2017 10:58
Updated: 01/23/2021 16:43
Changes: 11/15/2017 10:58 (80), 12/06/2019 11:58 (6), 01/23/2021 16:39 (3), 01/23/2021 16:43 (1)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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