JVN#14434132
WPS Office improper access restriction to its named pipe

Overview

WPS Office provided by WPS SOFTWARE PTE. LTD. fails to properly restrict access to its named pipe.

Products Affected

• WPS Office2 (2020 edition) Ver.11.2.0.10707 and earlier
• WPS Office2 (2025 edition) Ver.11.2.0.10715 and earlier
• WPS Cloud Ver.11.2.0.10715 and earlier
• WPS Cloud Pro Ver.11.2.0.10716 and earlier
• KINGSOFT PDF Pro Ver.11.2.0.10715 and earlier

Description

WPS Office provided by WPS SOFTWARE PTE. LTD. contains a service program running background and providing certain functionalities to the other programs. This service program uses a named pipe to communicate with the other programs.
The named pipe above is not properly protected and any non-administrative user can access it.

• Exposed dangerous method or function (CWE-749)
  • CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N Base Score 8.5
  • CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Base Score 7.8
  • CVE-2018-6400

Impact

A non-administrative user may execute arbitrary programs with SYSTEM privilege.

Solution

Update the Software
Update the software to the latest version according to the information provided by the developer.