Microsoft Office 2016 on Mac Email Attachment access control

CVSS Meta Temp Score
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CTI Interest Score
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5.8$0-$5k0.00

Summaryinfo

A vulnerability classified as critical was found in Microsoft Office 2016 on Mac. The impacted element is an unknown function of the component Email Attachment Handler. Executing a manipulation can lead to access control. This vulnerability is registered as CVE-2018-0819. It is possible to launch the attack remotely. No exploit is available. It is advisable to implement a patch to correct this issue.

Detailsinfo

A vulnerability was found in Microsoft Office 2016 on Mac (Office Suite Software). It has been declared as critical. This vulnerability affects an unknown function of the component Email Attachment Handler. 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, and integrity. CVE summarizes:

Microsoft Office 2016 for Mac allows an attacker to send a specially crafted email attachment to a user in an attempt to launch a social engineering attack, such as phishing, due to how Outlook for Mac displays encoded email addresses, aka "Spoofing Vulnerability in Microsoft Office for Mac."

The bug was discovered 01/09/2018. The weakness was published 01/09/2018 by Sabri Haddouche with Wire Swiss GmbH as confirmed security update guide (Website). The advisory is shared for download at portal.msrc.microsoft.com. This vulnerability was named CVE-2018-0819 since 12/01/2017. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1068. The advisory points out:

A spoofing vulnerability exists when Microsoft Outlook for MAC does not properly handle the encoding and display of email addresses. This improper handling and display may cause antivirus or antispam scanning to not work as intended.

The vulnerability scanner Nessus provides a plugin with the ID 106189 (Security Update for Microsoft Office (January 2018) (macOS)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family MacOS X Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 110310 (Microsoft Office and Microsoft Office Services and Web Apps Security Update January 2018).

Applying a patch is able to eliminate this problem. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (106189) and SecurityFocus (BID 102464†). Similar entry is available at VDB-111564. Once again VulDB remains the best source for 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: 5.4
VulDB Temp Score: 5.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔍

CVSSv2info

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

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Exploitinginfo

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

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 106189
Nessus Name: Security Update for Microsoft Office (January 2018) (macOS)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 801075
OpenVAS Name: Microsoft Office Multiple Remote Code Execution Vulnerabilities - Jan18 (Mac OS X)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Patch
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
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Timelineinfo

12/01/2017 🔍
01/09/2018 +39 days 🔍
01/09/2018 +0 days 🔍
01/09/2018 +0 days 🔍
01/09/2018 +0 days 🔍
01/09/2018 +0 days 🔍
01/10/2018 +1 days 🔍
01/19/2018 +9 days 🔍
08/18/2024 +2403 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: portal.msrc.microsoft.com
Researcher: Sabri Haddouche
Organization: Wire Swiss GmbH
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2018-0819 (🔍)
GCVE (CVE): GCVE-0-2018-0819
GCVE (VulDB): GCVE-100-111580
SecurityFocus: 102464 - Microsoft Office for MAC CVE-2018-0819 Spoofing Vulnerability
SecurityTracker: 1040153

See also: 🔍

Entryinfo

Created: 01/10/2018 14:21
Updated: 08/18/2024 05:22
Changes: 01/10/2018 14:21 (72), 12/29/2019 08:11 (10), 01/29/2021 15:09 (3), 08/18/2024 05:22 (17)
Complete: 🔍
Cache ID: 216::103

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