CVE Vulnerabilities

CVE-2020-1337

Time-of-check Time-of-use (TOCTOU) Race Condition

Published: Aug 17, 2020 | Modified: Jan 19, 2024
CVSS 3.x
7.8
HIGH
Source:
NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 2.x
7.2 HIGH
AV:L/AC:L/Au:N/C:C/I:C/A:C
RedHat/V2
RedHat/V3
Ubuntu

An elevation of privilege vulnerability exists when the Windows Print Spooler service improperly allows arbitrary writing to the file system. An attacker who successfully exploited this vulnerability could run arbitrary code with elevated system privileges. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. To exploit this vulnerability, an attacker would have to log on to an affected system and run a specially crafted script or application. The update addresses the vulnerability by correcting how the Windows Print Spooler Component writes to the file system.

Weakness

The product checks the state of a resource before using that resource, but the resource’s state can change between the check and the use in a way that invalidates the results of the check. This can cause the product to perform invalid actions when the resource is in an unexpected state.

Affected Software

Name Vendor Start Version End Version
Windows_10 Microsoft - -
Windows_10 Microsoft 1607 1607
Windows_10 Microsoft 1709 1709
Windows_10 Microsoft 1803 1803
Windows_10 Microsoft 1809 1809
Windows_10 Microsoft 1903 1903
Windows_10 Microsoft 1909 1909
Windows_10 Microsoft 2004 2004
Windows_7 Microsoft sp1 sp1
Windows_8.1 Microsoft - -
Windows_rt_8.1 Microsoft - -
Windows_server_2008 Microsoft - -
Windows_server_2008 Microsoft r2 r2
Windows_server_2012 Microsoft - -
Windows_server_2012 Microsoft r2 r2
Windows_server_2016 Microsoft - -
Windows_server_2016 Microsoft 1903 1903
Windows_server_2016 Microsoft 1909 1909
Windows_server_2016 Microsoft 2004 2004
Windows_server_2019 Microsoft - -

Potential Mitigations

References