PT-2018-18305 · Displaylink · Displaylink Core Software Cleaner Application

Aleix Sala Bach · Published 2018-06-05 · Updated 2018-08-01 · CVE-2018-7884

Positive Technologies (AI Summary)

CVSS v2.0

9.3

High

Base vector

AV:N/AC:M/Au:N/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions: DisplayLink Core Software Cleaner Application version 8.2.1956

Description: An issue was discovered in the DisplayLink Core Software Cleaner Application. When the drivers are updated to a newer version, the product launches a process as SYSTEM to uninstall the old version. This process, cl 1956.exe, is run as SYSTEM on the %systemroot%Temp folder, where any user can write a DLL (e.g., version.dll) to perform DLL Hijacking and elevate privileges to SYSTEM.

Recommendations: For DisplayLink Core Software Cleaner Application version 8.2.1956, as a temporary workaround, consider restricting write access to the %systemroot%Temp folder to minimize the risk of exploitation.

Fix

Untrusted Search Path

Weakness Enumeration

CWE-426

Related Identifiers

CVE-2018-7884

Affected Products

Displaylink Core Software Cleaner Application

References · 3

• https://osv.dev/vulnerability/CVE-2018-7884 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2018-7884 · Security Note
• http://seclists.org/fulldisclosure/2018/Jun/1 · Note