QID 91796

Date Published: 2021-08-06

QID 91796: Windows Print Spooler Remote Code Execution Vulnerability

The Print Spooler is software built into the Windows operating system that temporarily stores print jobs in the computer's memory until the printer is ready to print them.

An elevation of privilege vulnerability exists when the Windows Print Spooler service improperly performs privileged file operations. An attacker who successfully exploited this vulnerability could run arbitrary code with SYSTEM privileges. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.

An attacker must have the ability to execute code on a victim system to exploit this vulnerability.

Sucessful exploitation of the vulnerability will lead to Remote Code Execution.

CVSS V3 rated as High - 7.8 severity.

CVSS V2 rated as Medium - 4.6 severity.

Solution

Please refer to the Security Update Guide.

Workaround:
Stop and Disable the Print Spooler Service:

Use the following PowerShell commands: Stop-Service -Name Spooler -Force
Set-Service -Name Spooler -StartupType Disabled
Impact of workaround: Disabling the Print Spooler service disables the ability to print both locally and remotely.

Vendor References

CVE-2021-34481 - msrc.microsoft.com/update-guide/vulnerability/CVE-2021-34481

CVEs related to QID 91796

CVE-2021-34481 |

Software Advisories

Advisory ID	Software	Component	Link

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