Drupal 6.22 Cross Site Scripting

Type packetstorm
Reporter MustLive
Modified 2011-06-28T00:00:00


Affected products:  
Vulnerable are Drupal 6.22 and previous versions. Taking into account that  
developers didn't fixed these holes, then versions 7.x also must be  
XSS (WASC-08):  
At pages with forms (i.e. at comment page http://site/comment/reply/1, as  
add data forms, as edit data forms), which are protected by token from CSRF,  
it's possible to conduct reflected XSS attack. Even without need to know  
form_token. The hole is similar to previous XSS, but in this case it's  
reflected XSS (not persistent), much more forms are affected (code will  
execute not only at edit forms, but also at add forms) and there is no need  
to know form_token.  
The attack is conducting on any forms with turned on FCKeditor/CKeditor.  
Such attack can be conducted and on forms with TinyMCE - I wrote already  
about such vulnerabilities in PHP-Nuke via TinyMCE  
If it's edit data form, then the attack can be conducted only on logged-in  
user which is an owner of this account (who posted this comment, etc.) or on  
admin of the site. And if it's add data form (i.e. comment), then it's  
possible to conduct attacks on admin and any logged-in users. Attacking code  
can be in parameter comment, body or other parameter depending on the form.  
Brute Force (WASC-11):  
In login form in sidebar, which is placed at any external page of the site  
(http://site/node), there is no reliable protection against brute force  
attacks. There is no captcha in Drupal itself, and existent Captcha module  
(and also all plugins for it, such as reCAPTCHA) is vulnerable, as I wrote  
already (http://websecurity.com.ua/4763/). Exploit is differ from previous  
BF: if in previous Brute Force vulnerability form_id equal user_login, then  
in this one form_id equal user_login_block.  
2010.12.11 - when I informed developers about previous multiple  
vulnerabilities in Drupal, I told them briefly about these holes.  
2011.04.13 - announced at my site.  
2011.04.14 - informed developers.  
2011.06.25 - disclosed at my site.  
I mentioned about these vulnerabilities at my site  
Best wishes & regards,  
Administrator of Websecurity web site