Soundy Background Music XSS Vulnerability

## FULL DISCLOSURE

#Product : Soundy Background Music
#Exploit Author : Rahul Pratap Singh
#Version : 3.1
#Home page Link : https://wordpress.org/plugins/soundy-background-music/
#Website : 0x62626262.wordpress.com
#Linkedin : https://in.linkedin.com/in/rahulpratapsingh94
#Date : 12/3/2016

XSS Vulnerability:

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Description:
------------------------------
----------
"war_soundy_audio_volume" parameter is not sanitized that leads to
Reflected XSS.

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Vulnerable Code:
----------------------------------------

soundy.php

1462-1473

if( $audio_volume_def == 'default' )
{
$audio_volume = 'default';
}
else
{
$audio_volume = $_POST[ 'war_soundy_audio_volume' ];
}

update_post_meta( $post_id,
                 'war_soundy_audio_volume',
                 $audio_volume );

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POC:
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https://0x62626262.files.wordpress.com/2016/03/soundy_background_music_xss.png

Fix:
Update to 3.2

Vulnerability Disclosure Timeline:
→ March  3, 2016  – Bug discovered, initial report to WordPress
→ March  7, 2016  – No response, Report sent again.
→ March  8, 2016  – WordPress response, plugin taken down
→ March 10, 2016  – Vendor deployed a patch

#######################################
#CTG SECURITY SOLUTIONS       #
#www.ctgsecuritysolutions.com  #
#######################################

Pub Ref:
https://wordpress.org/plugins/soundy-background-music/changelog/