Type1 Font Parsing 0-day Remote Code Execution Vulnerability Threat Alert

Type1 Font Parsing 0-day Remote Code Execution Vulnerability Threat Alert

April 3, 2020 | Mina Hao

Overview

On March 23, local time, Microsoft released an out-of-band security advisory ADV200006 to address two critical 0-day vulnerabilities in Adobe Type Manager Library. A vulnerability exists in Microsoft Windows when the Windows Adobe Type Manager Library improperly handles a crafted multi-master font, namely, the Adobe Type 1 PostScript format. An attacker could exploit the vulnerability to cause remote code execution by convincing a user to open a crafted document or viewing it in the Windows Preview pane.

Currently, Microsoft is developing related patches and will release the patches on the next Update Tuesday. Users are advised to apply related protections as soon as possible.

Affected Versions:

Windows 10 for 32-bit Systems

Windows 10 for x64-based Systems

Windows 10 Version 1607 for 32-bit Systems

Windows 10 Version 1607 for x64-based Systems

Windows 10 Version 1709 for 32-bit Systems

Windows 10 Version 1709 for ARM64-based Systems

Windows 10 Version 1709 for x64-based Systems

Windows 10 Version 1803 for 32-bit Systems

Windows 10 Version 1803 for ARM64-based Systems

Windows 10 Version 1803 for x64-based Systems

Windows 10 Version 1809 for 32-bit Systems

Windows 10 Version 1809 for ARM64-based Systems

Windows 10 Version 1809 for x64-based Systems

Windows 10 Version 1903 for 32-bit Systems

Windows 10 Version 1903 for ARM64-based Systems

Windows 10 Version 1903 for x64-based Systems

Windows 10 Version 1909 for 32-bit Systems

Windows 10 Version 1909 for ARM64-based Systems

Windows 10 Version 1909 for x64-based Systems

Windows 7 for 32-bit Systems Service Pack 1

Windows 7 for x64-based Systems Service Pack 1

Windows 8.1 for 32-bit systems

Windows 8.1 for x64-based systems

Windows RT 8.1

Windows Server 2008 for 32-bit Systems Service Pack 2

Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation)

Windows Server 2008 for Itanium-Based Systems Service Pack 2

Windows Server 2008 for x64-based Systems Service Pack 2

Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation)

Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1

Windows Server 2008 R2 for x64-based Systems Service Pack 1

Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)

Windows Server 2012

Windows Server 2012 (Server Core installation)

Windows Server 2012 R2

Windows Server 2012 R2 (Server Core installation)

Windows Server 2016

Windows Server 2016 (Server Core installation)

Windows Server 2019

Windows Server 2019 (Server Core installation)

Windows Server, version 1803 (Server Core Installation)

Windows Server, version 1903 (Server Core installation)

Windows Server, version 1909 (Server Core installation)

Solution

Patches of the preceding vulnerabilities on the next Update Tuesday. Once patches are available, users are advised to download and install them as soon as possible.

Currently, Microsoft has provided different workarounds.

  1. Disable the Preview Pane and Details Pane in Windows Explorer.
  2. Disable the WebClient service.
  3. Rename ATMFD.DLL.

For details, click the following link:

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/adv200006

Reference Link

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/adv200006

Statement

This advisory is only used to describe a potential risk. NSFOCUS does not provide any commitment or promise on this advisory. NSFOCUS and the author will not bear any liability for any direct and/or indirect consequences and losses caused by transmitting and/or using this advisory. NSFOCUS reserves all the rights to modify and interpret this advisory. Please include this statement paragraph when reproducing or transferring this advisory. Do not modify this advisory, add/delete any information to/from it, or use this advisory for commercial purposes without permission from NSFOCUS.

About NSFOCUS

NSFOCUS IB is a wholly owned subsidiary of NSFOCUS, an enterprise application and network security provider, with operations in the Americas, Europe, the Middle East, Southeast Asia and Japan. NSFOCUS IB has a proven track record of combatting the increasingly complex cyber threat landscape through the construction and implementation of multi-layered defense systems. The company’s Intelligent Hybrid Security strategy utilizes both cloud and on-premises security platforms, built on a foundation of real-time global threat intelligence, to provide unified, multi-layer protection from advanced cyber threats.

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