Symantec VIP Access Arbitrary DLL Execution

`[+] Credits: John Page aka hyp3rlinx  
  
[+] Website: hyp3rlinx.altervista.org  
  
[+] Source:  
http://hyp3rlinx.altervista.org/advisories/SYMANTEC-VIP-ACCESS-ARBITRARY-DLL-EXECUTION.txt  
  
[+] ISR: ApparitionSec  
  
  
  
Vendor:  
================  
www.symantec.com  
  
  
  
Product:  
===================  
Symantec VIP Access  
Desktop versions prior to 2.2.2  
  
  
Vulnerability Type:  
=======================  
Arbitrary DLL Execution  
  
  
  
CVE Reference:  
==============  
CVE-2016-6593  
  
  
  
Vulnerability Details:  
=====================  
  
VIP Access Desktop UI Manager invokes DLLs from the current working folder  
during startup. A malicious local user can create  
specifically modified DLLs to replace the normal product DLLs required  
during startup.  
  
Then, by redirecting the startup path of the VIP Access Desktop UI Manager  
the user can cause the VIP Access Desktop  
UI Manager to invoke the substituted DLL instead of the required product  
DLL. Any specifically modified code execution  
could be performed with logged-on user privileges, which is normally  
user-level access in currently supported operating systems.  
Ultimately, this problem is caused by a failure to properly validate  
required product DLLs during start-up.  
  
This could result in a local user being able to manipulate VIP Access  
Desktop to load and execute an arbitrary DLL of the useras  
choice with user-level privileges.  
  
Reference:  
https://www.symantec.com/security_response/securityupdates/detail.jsp?fid=security_advisory&pvid=security_advisory&year=&suid=20161208_00  
  
  
  
Disclosure Timeline:  
======================================  
Vendor Notification: Feburary 4, 2016  
December 8, 2016 : Public Disclosure  
  
  
  
  
Exploitation Technique:  
=======================  
Local  
  
  
  
  
[+] Disclaimer  
The information contained within this advisory is supplied "as-is" with no  
warranties or guarantees of fitness of use or otherwise.  
Permission is hereby granted for the redistribution of this advisory,  
provided that it is not altered except by reformatting it, and  
that due credit is given. Permission is explicitly given for insertion in  
vulnerability databases and similar, provided that due credit  
is given to the author. The author is not responsible for any misuse of the  
information contained herein and accepts no responsibility  
for any damage caused by the use or misuse of this information. The author  
prohibits any malicious use of security related information  
or exploits by the author or elsewhere.  
  
hyp3rlinx  
`