CVE Vulnerabilities

CVE-2020-8950

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

Published: Feb 12, 2020 | Modified: Feb 19, 2020
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

The AUEPLauncher service in Radeon AMD User Experience Program Launcher through 1.0.0.1 on Windows allows elevation of privilege by placing a crafted file in %PROGRAMDATA%AMDPPCupload and then creating a symbolic link in %PROGRAMDATA%AMDPPCtemp that points to an arbitrary folder with an arbitrary file name.

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
User_experience_program Amd * 1.0.0.1 (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