SpiceWorks 7.5 TFTP - Remote File Overwrite / Upload Vulnerability

[+] Credits: John Page AKA HYP3RLINX    
 
 
Vendor:
==================
www.spiceworks.com
 
 
 
Product:
=================
Spiceworks - 7.5
 
 
Provides network inventory and monitoring of all the devices on the network by discovering IP-addressable devices.
It can be configured to provide custom alerts and notifications based on various criteria. it also provides a ticketing system,
a user portal, an integrated knowledge base, and mobile ticket management.
 
 
 
Vulnerability Type:
==============================================
Improper Access Control File Overwrite / Upload
 
 
 
CVE Reference:
==============
CVE-2017-7237
 
 
 
Security Issue:
================
The Spiceworks TFTP Server, as distributed with Spiceworks Inventory 7.5, allows remote attackers to access the Spiceworks "data\configurations"
directory by leveraging the unauthenticated nature of the TFTP service for all clients who can reach UDP port 69. This allows remote attackers to
overwrite files within the Spiceworks configurations directory, if the targeted file name is known or guessed.
 
Remote attackers who can reach UDP port 69 can also write/upload arbitrary files to the "data\configurations", this can potentially become a
Remote Code Execution vulnerability if for example an executable file e.g. EXE, BAT is dropped, then later accessed and run by an unknowing
Spiceworks user.
 
 
 
 
References - released April 3, 2017:
====================================
https://community.spiceworks.com/support/inventory/docs/network-config#security
 
 
 
Proof:
=======
 
1) Install Spiceworks 
2) c:\>tftp -i VICTIM-IP PUT someconfig someconfig
3) Original someconfig gets overwritten
 
OR
 
Arbitrary file upload
c:\>tftp -i VICTIM-IP PUT Evil.exe  Evil.exe

#  0day.today [2018-04-02]  #