Published:2017/08/08  Last Updated:2017/08/08

Installer of Qua station connection tool for Windows may insecurely load Dynamic Link Libraries


Installer of Qua station connection tool for Windows may insecurely load Dynamic Link Libraries.

Products Affected

  • Qua station connection tool for Windows version 1.00.03


Qua station provided KDDI CORPORATION is a 4G LTE photostrage. Qua station connection tool is used to view data saved on Qua station from a PC and/or save data on a PC.  Installer of Qua station connection tool for Windows contains an issue with the DLL search path, which may lead to insecurely loading Dynamic Link Libraries (CWE-427).


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


Use the latest installer
Use the latest installer according to the information provided by the developer.
The developer states this vulnerability was addressed in the installer of Qua station connection tool for Windows released on 2017 June 22 at 16:00 JST (UTC/GMT + 9hours).
Users who already have installed Qua station connection tool for Windows do not need to re-install the application, because this issue affects the installer only.

Vendor Status

Vendor Status Last Update Vendor Notes
KDDI CORPORATION Vulnerable 2017/08/08 KDDI CORPORATION website


  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

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)
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)


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


Eili Masami of Tachibana Lab. reported this vulnerability to IPA.
JPCERT/CC coordinated with the developer under Information Security Early Warning Partnership.

Other Information

JPCERT Reports
CERT Advisory
CPNI Advisory
CVE CVE-2017-2289
JVN iPedia JVNDB-2017-000191