Secure Printing Post-PrintNightmare Vulnerability

The PrintNightmare vulnerability (CVE-2021-34527) in the Windows print spooler allowed attackers remote control of affected systems. While Microsoft has released patches, staying updated and considering cloud alternatives like ezeep can help ensure secure printing and reduce your attack surface. This post outlines how to navigate this ongoing security concern and protect your printing infrastructure.

PrintNightmare Vulnerability: Summer Update 2022

Even a year after the PrintNightmare vulnerability emerged, the threat persists. Patches for the Windows Print Spooler and Windows Server were released in July 2022. It is important to stay updated via Microsoft Support and install new patches immediately. Consider cloud printing alternatives, like ezeep, for added protection.

July 9, 2021 Update: Immediate Steps for ezeep Users

Microsoft aimed to close this PrintNightmare security loophole by July 13, 2021. Until then, ezeep customers should take these measures to maintain secure printing:

• Deactivate the setting "Allow Print Spooler to Accept Client Connections" via group policy.
• Avoid using "Map Additional Printers" and "Windows Printer Mapping."

Avoid deactivating the Print Service Spooler, as this could prevent ezeep from working.

Zebra Printer Issues with Patch

Installation of Microsoft's security patch (see July 7 Update below) caused problems with Zebra printers and potentially other label printers. Microsoft and Zebra worked on a fix. If Zebra printers were in use, it was important to delay installing the July 6 Microsoft patch.

July 7, 2021 Update: Microsoft Releases Remote Code Fix

Microsoft released an update to resolve the remote code issue related to PrintNightmare:

"Updates a remote code execution exploit in the Windows Print Spooler service, known as “PrintNightmare”, as documented in CVE-2021-34527."

For more details, visit the Microsoft support page.

This information aimed to help users, and the Microsoft update brought things back to a more normal state. Further questions could be directed to support channels.

How Does Cloud-Based Print Management Protect Against PrintNightmare?

Using a cloud-based print management solution helps protect against vulnerabilities like PrintNightmare by reducing your local network's attack surface.

Cloud services remove the need for on-premise print servers, shifting responsibility for security and maintenance, including vulnerability patching, to the provider.

• Reduced attack surface: Moving your print infrastructure to a cloud-based solution reduces the attack surface on your local network. The cloud service provider handles securing and maintaining the infrastructure, including patching vulnerabilities like PrintNightmare.
• Regular updates and patches: Cloud-based print management providers maintain their infrastructure and apply security patches regularly. This means you benefit from the latest updates without having to manage them yourself.
• Vendor expertise: Providers of cloud-based print management specialize in securing their infrastructure and services. They often have dedicated security teams that address vulnerabilities quickly and efficiently.

While cloud-based print management offers significant protection, it does not make you immune to all security threats. Continue to follow best practices for securing your network, devices, and user accounts, and stay informed about the latest security updates.