Microsoft Outlook 2016 on Mac HTML input validation

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

A vulnerability has been found in Microsoft Outlook 2016 on Mac (Groupware Software) and classified as critical. This vulnerability affects an unknown functionality of the component HTML Handler. The manipulation with an unknown input leads to a input validation vulnerability. The CWE definition for the vulnerability is CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

A spoofing vulnerability exists in when Microsoft Outlook for Mac does not sanitize html properly, aka "Microsoft Outlook for Mac Spoofing Vulnerability".

The bug was discovered 06/13/2017. The weakness was published 06/13/2017 as KBRelease Notes as confirmed security update guide (Website). The advisory is shared for download at portal.msrc.microsoft.com. This vulnerability was named CVE-2017-8545 since 05/03/2017. 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 vulnerability scanner Nessus provides a plugin with the ID 100758 (Security Update for Microsoft Office (June 2017) (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.

Applying the patch KBRelease Notes 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 vulnerability database at Tenable (100758). Similar entries are available at 102443 and 102445.

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CPE 2.3info

CPE 2.2info

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CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.2

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

NVD Base Score: 6.5
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CVSSv2info

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Exploitinginfo

Class: Input validation
CWE: CWE-20
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

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Nessus ID: 100758
Nessus Name: Security Update for Microsoft Office (June 2017) (macOS)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
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OpenVAS ID: 801595
OpenVAS Name: Microsoft Office Outlook Spoofing Vulnerability (Mac OS X)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Patch
Status: 🔍

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Patch: KBRelease Notes

Timelineinfo

05/03/2017 🔍
06/13/2017 +41 days 🔍
06/13/2017 +0 days 🔍
06/13/2017 +0 days 🔍
06/13/2017 +0 days 🔍
06/13/2017 +0 days 🔍
06/14/2017 +1 days 🔍
06/14/2017 +0 days 🔍
12/28/2020 +1293 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: KBRelease Notes
Researcher: Aaron Grattafiori
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-8545 (🔍)
SecurityTracker: 1038664
SecurityFocus: 98917 - Microsoft Outlook for Mac CVE-2017-8545 Spoofing Vulnerability

See also: 🔍

Entryinfo

Created: 06/14/2017 11:43
Updated: 12/28/2020 13:05
Changes: 06/14/2017 11:43 (77), 10/17/2019 16:08 (5), 12/28/2020 12:58 (3), 12/28/2020 13:05 (1)
Complete: 🔍

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