Published:2018/05/29  Last Updated:2018/05/29

JVN#20040004
The installer of "FLET'S VIRUS CLEAR Easy Setup & Application Tool" and "FLET'S VIRUS CLEAR v6 Easy Setup & Application Tool" may insecurely invoke an executable file

Overview

The installer of "FLET'S VIRUS CLEAR Easy Setup & Application Tool" and "FLET'S VIRUS CLEAR v6 Easy Setup & Application Tool" provided by NIPPON TELEGRAPH AND TELEPHONE EAST CORPORATION may insecurely invoke an executable file.

Products Affected

  • FLET'S VIRUS CLEAR Easy Setup & Application Tool ver.13.0 and earlier versions
  • FLET'S VIRUS CLEAR v6 Easy Setup & Application Tool ver.13.0 and earlier versions

Description

The installer of "FLET'S VIRUS CLEAR Easy Setup & Application Tool" and "FLET'S VIRUS CLEAR v6 Easy Setup & Application Tool" provided by NIPPON TELEGRAPH AND TELEPHONE EAST CORPORATION contains an issue with the DLL search path, which may lead to insecurely invoke an executable file (CWE-427).

Impact

Arbitrary code may be executed with the privilege of the user invoking the installer.

Solution

Use the latest installer
This vulnerability has been already addressed in the latest version (ver.13.1) released in 2018 May 29.
When installing "FLET'S VIRUS CLEAR Easy Setup & Application Tool" and/or "FLET'S VIRUS CLEAR v6 Easy Setup & Application Tool", use the latest installer according to the information provided by the developer.

Note that this vulnerability affects the installer only, thus users who have already installed "FLET'S VIRUS CLEAR Easy Setup & Application Tool" and/or "FLET'S VIRUS CLEAR v6 Easy Setup & Application Tool" do not need to re-install the software using the latest installer. 

For details, refer to the information provided by the developer.

Vendor Status

Vendor Status Last Update Vendor Notes
NIPPON TELEGRAPH AND TELEPHONE EAST CORPORATION Vulnerable 2018/05/29

References

  1. Japan Vulnerability Note JVNTA#91240916
    Insecure DLL Loading and Command Execution Issues on Many Windows Application Programs

JPCERT/CC Addendum

Vulnerability Analysis by JPCERT/CC

CVSS v3 CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Base Score: 7.8
Attack Vector(AV) Physical (P) Local (L) Adjacent (A) Network (N)
Attack Complexity(AC) High (H) Low (L)
Privileges Required(PR) High (H) Low (L) None (N)
User Interaction(UI) Required (R) None (N)
Scope(S) Unchanged (U) Changed (C)
Confidentiality Impact(C) None (N) Low (L) High (H)
Integrity Impact(I) None (N) Low (L) High (H)
Availability Impact(A) None (N) Low (L) High (H)
CVSS v2 AV:N/AC:M/Au:N/C:P/I:P/A:P
Base Score: 6.8
Access Vector(AV) Local (L) Adjacent Network (A) Network (N)
Access Complexity(AC) High (H) Medium (M) Low (L)
Authentication(Au) Multiple (M) Single (S) None (N)
Confidentiality Impact(C) None (N) Partial (P) Complete (C)
Integrity Impact(I) None (N) Partial (P) Complete (C)
Availability Impact(A) None (N) Partial (P) Complete (C)

Comment

This analysis assumes that the user is tricked into placing a malicious executable file prepared by an attacker in a specific folder.

Credit

DigiGnome reported this vulnerability to IPA.
JPCERT/CC coordinated with the developer under Information Security Early Warning Partnership.

Other Information

JPCERT Alert
JPCERT Reports
CERT Advisory
CPNI Advisory
TRnotes
CVE CVE-2018-0563
JVN iPedia JVNDB-2018-000057