Published:2018/04/12  Last Updated:2018/04/12

The installer of PhishWall Client Internet Explorer edition may insecurely load Dynamic Link Libraries


The installer of PhishWall Client Internet Explorer edition may insecurely load Dynamic Link Libraries.

Note that this vulnerability is different from JVN#93699304.

Products Affected

  • The installer of PhishWall Client Internet Explorer edition, Ver. 3.7.15 and earlier


PhishWall Client Internet Explorer edition provided by SecureBrain Corporation is anti-phishing and anti-MITB software. The installer of PhishWall Client Internet Explorer edition contains an issue with the DLL search path, which may lead to insecurely loading Dynamic Link Libraries (CWE-427).

According to the developer, the affected installer was built using Install Shield with all Hotfixes applied as of November 2017.
The developer has confirmed that the most recent Hotfix applied Install Shield addresses this issue.
For details on Install Shield Hotfixes, refer to Best Practices to Avoid Windows Setup Launcher Executable Issues.


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.
According to the developer, users of Windows 7 must first apply Windows 7 security patch (KB2533623), and then use the latest installer to install the software.
Users who already have installed PhishWall Client Internet Explorer version do not need to re-install the application, because this issue affects the installer only.

Vendor Status

Vendor Status Last Update Vendor Notes
SecureBrain Corporation Vulnerable 2018/04/12 SecureBrain Corporation website


  1. Flexera Software Knowledge Article 000019593
    Best Practices to Avoid Windows Setup Launcher Executable Issues
  2. Japan Vulnerability Notes 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.


Yuto Iso of NTT Security (Japan) KK and BlackWingCat of PinkFlyingWhale 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-2018-0561
JVN iPedia JVNDB-2018-000033