Microsoft Outlook 2016 on Mac HTML input validation

CVSS Meta Temp Score
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CTI Interest Score
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6.2$0-$5k0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in Microsoft Outlook 2016 on Mac. The affected element is an unknown function of the component HTML Handler. Executing a manipulation can lead to input validation. This vulnerability is registered as CVE-2017-8545. 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 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. The commercial vulnerability scanner Qualys is able to test this issue with plugin 110299 (Microsoft Office and Microsoft Office Services and Web Apps Security Update June 2017).

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 databases at Tenable (100758) and SecurityFocus (BID 98917†). Similar entries are available at VDB-102443 and VDB-102445. 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: 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
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
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: 100758
Nessus Name: Security Update for Microsoft Office (June 2017) (macOS)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 801595
OpenVAS Name: Microsoft Office Outlook Spoofing Vulnerability (Mac OS X)
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: 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 🔍
09/13/2024 +2648 days 🔍

Sourcesinfo

Vendor: microsoft.com

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

CVE: CVE-2017-8545 (🔍)
GCVE (CVE): GCVE-0-2017-8545
GCVE (VulDB): GCVE-100-102460
SecurityFocus: 98917 - Microsoft Outlook for Mac CVE-2017-8545 Spoofing Vulnerability
SecurityTracker: 1038664

See also: 🔍

Entryinfo

Created: 06/14/2017 11:43
Updated: 09/13/2024 21:12
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), 09/13/2024 21:12 (17)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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