CVE Vulnerabilities

CVE-2019-0572

Improper Link Resolution Before File Access ('Link Following')

Published: Jan 08, 2019 | Modified: Aug 24, 2020
CVSS 3.x
7.8
HIGH
Source:
NVD
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS 2.x
6.8 MEDIUM
AV:N/AC:M/Au:N/C:P/I:P/A:P
RedHat/V2
RedHat/V3
Ubuntu

An elevation of privilege vulnerability exists when the Windows Data Sharing Service improperly handles file operations, aka Windows Data Sharing Service Elevation of Privilege Vulnerability. This affects Windows Server 2016, Windows 10, Windows Server 2019, Windows 10 Servers. This CVE ID is unique from CVE-2019-0571, CVE-2019-0573, CVE-2019-0574.

Weakness

The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource.

Affected Software

Name Vendor Start Version End Version
Windows_10 Microsoft - (including) - (including)
Windows_10 Microsoft 1607 (including) 1607 (including)
Windows_10 Microsoft 1703 (including) 1703 (including)
Windows_10 Microsoft 1709 (including) 1709 (including)
Windows_10 Microsoft 1803 (including) 1803 (including)
Windows_10 Microsoft 1809 (including) 1809 (including)
Windows_server_2016 Microsoft - (including) - (including)
Windows_server_2016 Microsoft 1709 (including) 1709 (including)
Windows_server_2016 Microsoft 1803 (including) 1803 (including)
Windows_server_2019 Microsoft - (including) - (including)

Potential Mitigations

  • Follow the principle of least privilege when assigning access rights to entities in a software system.
  • Denying access to a file can prevent an attacker from replacing that file with a link to a sensitive file. Ensure good compartmentalization in the system to provide protected areas that can be trusted.

References