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KBVault MySQL 0.16a Arbitrary File Upload

KBVault MySQL 0.16a Arbitrary File Upload
Posted Jun 16, 2017
Authored by Fatih Emiral

KBVault MySQL version 0.16a suffers from a remote arbitrary file upload vulnerability.

tags | exploit, remote, arbitrary, file upload
advisories | CVE-2017-9602
MD5 | beeaa30026309dadbd026daa7da8d258

KBVault MySQL 0.16a Arbitrary File Upload

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# Exploit Title: [KBVault MySQL v0.16a - Unauthenticated File Upload to Run Code]
# Google Dork: [inurl:"FileExplorer/Explorer.aspx"]
# Date: [2017-06-14]
# Exploit Author: [Fatih Emiral]
# Vendor Homepage: [http://kbvaultmysql.codeplex.com/]
# Software Link: [http://kbvaultmysql.codeplex.com/downloads/get/858806]
# Version: [0.16a]
# Tested on: [Windows 7 (applicable to all Windows platforms)]
# CVE : [CVE-2017-9602]

1. Description

KBVault Mysql Free Knowledge Base application package comes with a third party file management component. An unauthenticated user can access the file upload (and delete) functionality using the following URI:

http://host/FileExplorer/Explorer.aspx?id=/Uploads

2. Exploit

Through this functionality a user can upload an ASPX script to run any arbitrary code, e.g.:

http://host/Uploads/Documents/cmd.aspx

3. Solution

Unauthenticated access to the file management function should be prohibited.
File uploads should be checked against executable formats, and only acceptable file types should be allowed to upload.

4. Disclosure Timeline

2017-06-09: Vendor notification
2017-06-09: Vendor responded with intention to fix the vulnerability
2017-06-12: CVE number acquired
2017-06-15: Public disclosure

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