CVE-2020-1229: Microsoft Outlook Security Feature Bypass Vulnerability

Overview

Severity
N/A
Category
Security Feature Bypass
Exploit Status
Not Exploited
Exploitation Likelihood
Less Likely
Patch Tuesday
2020-Jun
Released
2020-06-09
Last Updated
2020-06-16
EPSS Score
8.57% (percentile: 92.4%)

Description

A security feature bypass vulnerability exists in Microsoft Outlook when Office fails to enforce security settings configured on a system. An attacker who successfully exploited this vulnerability could cause a system to load remote images. These images could disclose the IP address of the targeted system to the attacker. Exploitation of the vulnerability requires that a user open a specially crafted image with an affected version of Microsoft Office software. In an email attack scenario, an attacker could exploit the vulnerability by sending the specially crafted image to the user. The update addresses the vulnerability by changing how remote images are processed in Outlook.

FAQ

Is the Preview Pane an attack vector for this vulnerability? Yes, the Preview Pane is an attack vector. Are the updates for the Microsoft Office for Mac currently available? The security update for Microsoft Office 2016 for Mac and Microsoft Office 2019 for Mac are not immediately available. The updates will be released as soon as possible, and when they are available, customers will be notified via a revision to this CVE information. I have Microsoft Word 2010 installed. Why am I not being offered the 4484378 update? The 4484378 update only applies to systems running specific configurations of Microsoft Office 2010. Some configurations will not be offered the update. If the preview pane is an attack vector, why is the severity for this vulnerability Important and not Critical? Even though the preview pane is an attack vector, the attacker cannot achieve remote code execution if they successfully exploit the vulnerability, but can only gain information from the victim.

Affected Products (20)

Microsoft Office

  • 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 Office 2019 for Mac
  • Microsoft Office 2016 (32-bit edition)
  • Microsoft Office 2016 (64-bit edition)
  • Microsoft Word 2016 (32-bit edition)
  • Microsoft Word 2016 (64-bit edition)
  • Microsoft Office 2016 for Mac
  • Microsoft Office 2010 Service Pack 2 (32-bit editions)
  • Microsoft Office 2010 Service Pack 2 (64-bit editions)
  • Microsoft Office 2013 RT Service Pack 1
  • Microsoft Office 2013 Service Pack 1 (32-bit editions)
  • Microsoft Office 2013 Service Pack 1 (64-bit editions)
  • Microsoft Word 2010 Service Pack 2 (32-bit editions)
  • Microsoft Word 2010 Service Pack 2 (64-bit editions)
  • Microsoft Word 2013 RT Service Pack 1
  • Microsoft Word 2013 Service Pack 1 (32-bit editions)
  • Microsoft Word 2013 Service Pack 1 (64-bit editions)

Security Updates (15)

Acknowledgments

MegaInfo

Revision History

  • 2020-06-09: Information published.
  • 2020-06-16: Microsoft is announcing the availability of the security updates for Microsoft Office for Mac. Customers running affected Mac software should install the update for their product to be protected from this vulnerability. Customers running other Microsoft Office software do not need to take any action. See the Release Notes for more information and download links.