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Date: Tue, 20 Aug 2019 14:55:55 -0300
From: Silton Renato Pereira dos Santos <silton.santos@...pest.com.br>
To: fulldisclosure@...lists.org
Subject: [FD] Unquoted Path - Trend Micro

=====[ Tempest Security Intelligence - ADV-02/2019
]==========================

Trend Maximum Security 2019
Author: Silton Santos
Tempest Security Intelligence - Recife, Pernambuco - Brazil

=====[ Table of
Contents]=====================================================

* Overview
* Detailed description
* Timeline of disclosure
* Thanks & Acknowledgements
* References

=====[ Vulnerability
Information]=============================================

* Class: Unquoted Search Path or Element [CWE-428][1]
* CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
* CVE-2019-14685

=====[
Overview]==============================================================

* System affected : Trend Maximum Security 2019.[2]
* Impact : An user could obtain SYSTEM privileges.

=====[ Detailed
description]==================================================

This application provide a unquoted path in the parameter lpApplicationName
of the function CreateProcessW during process create PwmConsole.exe ---
which is triggered from the feature PC Health Checkup.

If an attacker has write permissions to C:\ or C:\Program Files\, it could
deliver an arbitrary executable named  Program.exe or Trend.exe which would
be executed by the coreServiceShell process.

coreServiceShell is a privileged process that will run Program.exe with
same privilege.

More Details:
https://medium.com/sidechannel-br/vulnerabilidade-no-trend-micro-maximum-security-2019-permite-a-escalação-de-privilégios-no-windows-471403d53b68


=====[ Timeline of
disclosure]===============================================

* 24/04/2019 - Responsible disclosure started with Trend Micro;
* 25/04/2019 - Analysis of the issue is started;
* 10/05/2019 - Trend Micro requires more information about the PoC;
* 22/05/2019 - Vendor developed and sent patch and asked for an analysis of
the fix;
* 28/05/2019 - Trend Micro thanked for the help and mentioned the process
os aknowledgement
(which includes the CVE reservation and Security Advisory post in in their
webpage);
* 31/07/2019 - Vendor issued a new patch and sent it to be analysed;
* 13/08/2019 - CVE-2019-14685 was reserved, and a link to security advisory
was provided.


=====[ Thanks &
Acknowledgements]============================================

- Tempest Security Intelligence [3]

=====[ References
]===========================================================

[1] https://cwe.mitre.org/data/definitions/428.html

[2]
https://esupport.trendmicro.com/en-us/home/pages/technical-support/1123420.aspx

[3] http://www.tempest.com.br

=====[ EOF
]====================================================================

Download attachment "advtrend" of type "application/octet-stream" (2624 bytes)


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