CVE-2021-1678: Windows Print Spooler Spoofing Vulnerability

Overview

Severity

High (CVSS 8.8)

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C

Category

Spoofing

Exploit Status

Not Exploited

Exploitation Likelihood

Less Likely

Patch Tuesday

2021-Jan

Released

2021-01-12

Last Updated

2021-09-14

EPSS Score

75.97% (percentile: 98.9%)

FAQ

Where can I find more information about this security update? Please see KB4599464. Why are there no September 2021 security updates for Windows 10 Version 1803, Windows 10 Version 1903, or Windows Server, version 1909 (Server Core installation)? The September security updates are not available for these versions of Windows 10 and Windows Server because they are no longer in support.

Detection & Weaponization (1 sources)

Maturity: Exploit

• GitHub PoC: 1 repositories

Affected Products (40)

Windows

• Windows 10 Version 20H2 for 32-bit Systems
• Windows 10 Version 20H2 for ARM64-based Systems
• Windows Server, version 20H2 (Server Core Installation)
• Windows 10 Version 1803 for 32-bit Systems
• Windows 10 Version 1803 for x64-based Systems
• Windows 10 Version 1803 for ARM64-based Systems
• Windows 10 Version 1809 for 32-bit Systems
• Windows 10 Version 1809 for x64-based Systems
• Windows 10 Version 1809 for ARM64-based Systems
• Windows Server 2019
• Windows Server 2019 (Server Core installation)
• Windows 10 Version 1909 for 32-bit Systems
• Windows 10 Version 1909 for x64-based Systems
• Windows 10 Version 1909 for ARM64-based Systems
• Windows Server, version 1909 (Server Core installation)
• Windows 10 Version 2004 for 32-bit Systems
• Windows 10 Version 2004 for ARM64-based Systems
• Windows 10 Version 2004 for x64-based Systems
• Windows Server, version 2004 (Server Core installation)
• 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 Server 2016
• Windows Server 2016 (Server Core installation)
• Windows 8.1 for 32-bit systems
• Windows 8.1 for x64-based systems
• Windows RT 8.1

ESU

• Windows 7 for 32-bit Systems Service Pack 1
• Windows 7 for x64-based Systems Service Pack 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 x64-based Systems Service Pack 2
• Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation)
• 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)

Security Updates (15)

• 5005565
• 4598245
• 5005568
• 5005566
• 4598229
• 5005569
• 5005573
• 5005633
• 5005615
• 5005613
• 5005627
• 5005606
• 5005618
• 5005623
• 5005607

Acknowledgments

<a href="https://twitter.com/eyal_karni">Eyal Karni</a>, CrowdStrike

Revision History

• 2021-01-12: Information published.
• 2021-09-14: CVE updated to announce that Microsoft is releasing the September 2021 security updates for all affected versions of Windows to address this vulnerability. Additionally, other information has been updated, including the following: 1) The CVE title and impact have been changed to better reflect the vulnerability. 2) FAQs have been added. 3) Acknowledgement has been updated. 4) CVSS Vector String has been updated.