Message-ID: <14c031ea-467e-381e-a6be-432ee31df4ee@vulnerability-lab.com>
Date: Mon, 4 Sep 2017 12:02:32 +0200
From: Vulnerability Lab <research@...nerability-lab.com>
To: fulldisclosure@...lists.org
Subject: [FD] Play TV v1.25.1(Build r123776) - DLL Hijack Vulnerability

Document Title:
===============
Play TV v1.25.1(Build r123776) - DLL Hijack Vulnerability 


References (Source):
====================
https://www.vulnerability-lab.com/get_content.php?id=2085


Release Date:
=============
2017-09-04


Vulnerability Laboratory ID (VL-ID):
====================================
2085


Common Vulnerability Scoring System:
====================================
3.3


Vulnerability Class:
====================
Privilege Escalation


Current Estimated Price:
========================
500€ - 1.000€


Product & Service Introduction:
===============================
Plays.tv is the ultimate platform for gamers to record, replay and relive gaming highlights. It’s easy to create quality video 
content in no time, for your whole PC game library. play.tv consider as part of ATI Software package , and other third parties.

( Copy of the Homepage: http://plays.tv/download ) 


Abstract Advisory Information:
==============================
The vulnerability laboratory core research team discovered a dll vulnerability in the official Play TV v1.25.1(Build r123776) software.


Vulnerability Disclosure Timeline:
==================================
2017-07-11: Researcher Notification & Coordination (Security Researcher)
2017-07-12: Vendor Notification (Security Department)
2017-**-**: Vendor Response/Feedback (Security Department)
2017-**-**: Vendor Fix/Patch (Service Developer Team)
2017-**-**: Security Acknowledgements  (Security Department)
2017-09-04: Public Disclosure (Vulnerability Laboratory)


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


Affected Product(s):
====================

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


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


Technical Details & Description:
================================
A local dll injection vulnerability has been discovered in the official Play TV  software 1.25.1(build r123776).
The issue allows local attackers to inject code to vulnerable dynamic link libraries to compromise the process 
or to gain higher system access privileges. Thus allows a local attacker to compromise the system process of 
the affected software to follow up with manipulations.

Vulnerable Software 
[+] Play TV  software 1.25.1(build r123776)

Vulnerable Libraries:
[+] api-ms-win-core-fibers-l1-1-1.dll	
[+] api-ms-win-core-localization-l1-2-1.dll	
[+] api-ms-win-core-file-l2-1-1.dll		
[+] api-ms-win-security-systemfunctions-l1-1-0.dll
[+] api-ms-win-core-sysinfo-l1-2-1.dll


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

Manual steps to reproduce the vulnerability ...
1. Generate a malicious dynamic link library
2. Rename it to any name mentioned in vulnerable libraries like api-ms-win-security-systemfunctions-l1-1-0.dll
3. Copy DLL file into applications directory path
4. Successfully reproduce the dll hijacking issue!


Security Risk:
==============
The security risk of the dll hijacking vulnerability in the software client is estimated as medium (CVSS 3.3).


Credits & Authors:
==================
Lawrence Amer [zeroattck@...il.com] - https://www.vulnerability-lab.com/show.php?user=Lawrence+Amer


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=========================
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