WampServer v3.0.6 - Insecure File Permissions

Document Title:
===============
WampServer v3.0.6 - Insecure File Permissions


References (Source):
====================
https://www.vulnerability-lab.com/get_content.php?id=1964


Release Date:
=============
2016-09-29


Vulnerability Laboratory ID (VL-ID):
====================================
1964


Common Vulnerability Scoring System:
====================================
5.4


Product & Service Introduction:
===============================
WampServer (Formerly WAMP5) is a Web development platform WAMP type, for operating locally (without connecting to an external server) PHP scripts. 
WampServer is not in itself a software but an environment with two servers (Apache and MySQL), a script interpreter (PHP) and phpMyAdmin for 
administration Web MySQL databases.

(Copy of the Vendor Homepage: http://www.wampserver.com/ )


Abstract Advisory Information:
==============================
An independent vulnerability laboratory researcher discovered an insecure file permission vulnerability in the WampServer v3.0.6 software.


Vulnerability Disclosure Timeline:
==================================
2016-09-30:	Public Disclosure (Vulnerability Laboratory)


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


Affected Product(s):
====================
WAMPS
Product: WampServer - Software 3.0.6


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


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


Technical Details & Description:
================================
Insecure File Permissions vulnerability has been discovered in the official WampServer v3.0.6 software.
The vulnerability exists due to insecure default permissions set on the wampmanager.exe and unins000.exe  

A local attacker could exploit this vulnerability by replacing wampmanager.exe or unins000.exe with a malicious executable file.  
The malicious file could execute or modify with the LocalSystem permissions. 


Proof of Concept (PoC):
=======================
WampServer for Windows contains a vulnerability that could allow a local attacker to gain elevated privileges.
For security demonstration or to reproduce the vulnerability follow the provided information and steps below.


-- PoC Exploit --
C:wampp>icacls wampmanager.exe
wampmanager.exe BUILTINAdministrateurs:(I)(F)        <--- Full Acces
                AUTORITE NTSystème:(I)(F)
                BUILTINUtilisateurs:(I)(RX)
                AUTORITE NTUtilisateurs authentifiés:(I)(M)       <--- Modify

1 fichiers correctement traités ; échec du traitement de 0 fichiers

C:wampp>icacls unins000.exe
unins000.exe BUILTINAdministrateurs:(I)(F)       <--- Full Acces
             AUTORITE NTSystème:(I)(F)
             BUILTINUtilisateurs:(I)(RX)
             AUTORITE NTUtilisateurs authentifiés:(I)(M)       <--- Modify

1 fichiers correctement traités ; échec du traitement de 0 fichiers


Security Risk:
==============
The security risk of the insecure file permissions issue in the software core is estimated as medium. (CVSS 5.4)


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


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