Microsoft Outlook Email Signature Version 17.7: A Comprehensive Overview

In its latest security updates for September 2023, Microsoft has addressed multiple vulnerabilities in its software, including an Information Disclosure Vulnerability affecting Microsoft Outlook applications. This article provides a detailed overview of the issue, its impact, and the necessary steps to remediate it.

The Vulnerability

Microsoft SharePoint Server Security Update for September 2023, as documented in KB5002499, has revealed an Information Disclosure Vulnerability that can be exploited by attackers. Successful exploitation could lead to unauthorized access to sensitive data, posing a significant risk to users' confidential information.

Affected Products and Patches

The following Microsoft Outlook applications are vulnerable:

* Semi-Annual Enterprise Channel: Version 2208 (Build 15601.20772)

* Semi-Annual Enterprise Channel: Version 2302 (Build 16130.20766)

* Semi-Annual Enterprise Channel (Preview): Version 2308 (Build 16731.20234)

* Monthly Enterprise Channel: Version 2306 (Build 16529.20254)

* Monthly Enterprise Channel: Version 2307 (Build 16626.20208)

Patched versions for Microsoft 365 (C2R) include:

* Current Channel: Version 2308 (Build 16731.20234)

Detection and Remediation

The Qualys Vulnerability R&D Lab has developed a detection method that checks the file version of 'graph.exe' to identify vulnerable versions of Microsoft Office. The detection also extracts the Install Path for Microsoft Office via the Windows Registry.

To remediate this vulnerability, users are advised to update their Microsoft Outlook applications manually or set them to automatic update. For Office click-2-run and Office 365 installations, updates can be applied manually or through automatic update settings.

Additional Resources

For more information on this vulnerability and the necessary patches, refer to Microsoft's Security Guide (KB5002499) and the KB articles provided. Qualys customers can access the Enterprise TruRisk Platform for comprehensive vulnerability management and remediation guidance.

Non-Qualys customers can audit their network for these vulnerabilities by signing up for a Qualys Free Trial or trying the Qualys Community Edition. The Qualys Security Blog offers prioritized remediation recommendations to help users protect their networks from newly discovered flaws in Microsoft software.

Microsoft outlook email signature version 17.7