Published:2016/08/17  Last Updated:2016/08/17

JVN#45583702
Installer of PhishWall Client Internet Explorer version may insecurely load Dynamic Link Libraries

Overview

The installer of PhishWall Client Internet Explorer Version may insecurely load Dynamic Linking Libraries.

Products Affected

  • The Installer of PhishWall Client Internet Explorer Version, ver. 3.7.8.1 and earlier

Description

PhishWall Client Internet Explorer Version, provided by SecureBrain Corporation, is an anti-phishing and anti-MITB software.
The installer of PhishWall Client Internet Explorer Version contains an issue with the DLL search path, which may lead to insecurely loading dynamic linking libraries.

This installer is built with an old version of Install Shield. The latest vesrion of Install Shield already addressed the issue.
See Best Practices to Avoid Windows Setup Launcher Executable Issues for details.

Impact

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

Solution

Use the latest installer
Use the latest installer according to the information provided by the developer.
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 2016/08/17 SecureBrain Corporation website

References

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

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 DLL file prepared by an attacker in a specific folder.

Credit

Takashi Yoshikawa of Mitsui Bussan Secure Directions 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-2016-4846
JVN iPedia JVNDB-2016-000139