CVE-2020-1081: Windows Printer Service Elevation of Privilege Vulnerability
An elevation of privilege vulnerability exists when the Windows Printer Service improperly validates file paths while loading printer drivers, aka 'Windows Printer Service Elevation of Privilege Vulnerability'.
Other sources
An elevation of privilege vulnerability exists when the Windows Printer Service improperly validates file paths while loading printer drivers. An authenticated attacker who successfully exploited this vulnerability could run arbitrary code with elevated system privileges. To exploit this vulnerability, an attacker would first have to log on to the system. An attacker could then run a specially crafted application that could exploit the vulnerability and take control of an affected system. The update addresses this vulnerability by correcting how the Windows Printer Service validates file paths.
— Microsoft
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Patch KB4556852 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Patch KB4556843 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Patch KB4556853 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Patch KB4556854 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Patch KB4556813 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Patch KB4556846 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Patch KB4556826 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Patch KB4556799 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Patch KB4556812 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Patch KB4551853 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Patch KB4556807
Event History
Frequently Asked Questions
What level of access does an attacker need to exploit this issue?
An attacker must first log on to the affected system. They can then run a specially crafted application to exploit the Printer Service path-validation flaw.
What could a successful attacker do?
Successful exploitation allows arbitrary code execution with elevated system privileges, potentially giving the attacker control of the affected system.
Which systems should be reviewed for exposure?
Review Microsoft Windows 7, Windows 10, Windows RT 8.1, and the listed Windows Server 2008, 2012, 2016, and 2019 systems. The provided data does not identify specific affected builds or patch levels.
What is the remediation described for this vulnerability?
Apply the update that corrects how the Windows Printer Service validates file paths when loading printer drivers.