CVE-2020-1493High

Microsoft Outlook Information Disclosure Vulnerability

Published
August 11, 2020
Last Modified
—

🔗 CVE IDs covered (1)

CVE-2020-1493 →

📋 Description

An information disclosure vulnerability exists when attaching files to Outlook messages. This vulnerability could potentially allow users to share attached files such that they are accessible by anonymous users where they should be restricted to specific users. To exploit this vulnerability, an attacker would have to attach a file as a link to an email. The email could then be shared with individuals that should not have access to the files, ignoring the default organizational setting. The security update addresses the vulnerability by correcting how Outlook handles file attachment links.

🎯 Affected products11

  • Microsoft 365 Apps for Enterprise for 32-bit Systems
  • Microsoft 365 Apps for Enterprise for 64-bit Systems
  • Microsoft Office 2019 for 32-bit editions
  • Microsoft Office 2019 for 64-bit editions
  • Microsoft Outlook 2010 Service Pack 2 (32-bit editions)
  • Microsoft Outlook 2010 Service Pack 2 (64-bit editions)
  • Microsoft Outlook 2013 RT Service Pack 1
  • Microsoft Outlook 2013 Service Pack 1 (32-bit editions)
  • Microsoft Outlook 2013 Service Pack 1 (64-bit editions)
  • Microsoft Outlook 2016 (32-bit edition)
  • Microsoft Outlook 2016 (64-bit edition)

✅ Remediation

KBClick to Run (Security Update) — fixed build https://aka.ms/OfficeSecurityReleases KB4484475 (Security Update) KB4484486 (Security Update) KB4484497 (Security Update)

🔗 References (7)